68 files changed, 262 insertions, 369 deletions

diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 7d87dd73cbe..5a2882d275b 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -2,7 +2,7 @@
 # This makefile is used to generate the kernel documentation,
 # primarily based on in-line comments in various source files.
 # See Documentation/kernel-doc-nano-HOWTO.txt for instruction in how
-# to ducument the SRC - and how to read it.
+# to document the SRC - and how to read it.
 # To add a new book the only step required is to add the book to the
 # list of DOCBOOKS.
 
diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index 8c9c6704e85..ca02e04a906 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -322,7 +322,6 @@ X!Earch/i386/kernel/mca.c
   <chapter id="sysfs">
      <title>The Filesystem for Exporting Kernel Objects</title>
 !Efs/sysfs/file.c
-!Efs/sysfs/dir.c
 !Efs/sysfs/symlink.c
 !Efs/sysfs/bin.c
   </chapter>
diff --git a/Documentation/acpi-hotkey.txt b/Documentation/acpi-hotkey.txt
index 744f1aec655..38040fa3764 100644
--- a/Documentation/acpi-hotkey.txt
+++ b/Documentation/acpi-hotkey.txt
@@ -30,7 +30,7 @@ specific hotkey(event))
 echo "event_num:event_type:event_argument" > 
         /proc/acpi/hotkey/action.
 The result of the execution of this aml method is 
-attached to /proc/acpi/hotkey/poll_method, which is dnyamically
+attached to /proc/acpi/hotkey/poll_method, which is dynamically
 created.  Please use command "cat /proc/acpi/hotkey/polling_method" 
 to retrieve it.
 
diff --git a/Documentation/fujitsu/frv/kernel-ABI.txt b/Documentation/fujitsu/frv/kernel-ABI.txt
index 0ed9b0a779b..8b0a5fc8bfd 100644
--- a/Documentation/fujitsu/frv/kernel-ABI.txt
+++ b/Documentation/fujitsu/frv/kernel-ABI.txt
@@ -1,17 +1,19 @@
-                                 =================================
-                                 INTERNAL KERNEL ABI FOR FR-V ARCH
-                                 =================================
-
-The internal FRV kernel ABI is not quite the same as the userspace ABI. A number of the registers
-are used for special purposed, and the ABI is not consistent between modules vs core, and MMU vs
-no-MMU.
-
-This partly stems from the fact that FRV CPUs do not have a separate supervisor stack pointer, and
-most of them do not have any scratch registers, thus requiring at least one general purpose
-register to be clobbered in such an event. Also, within the kernel core, it is possible to simply
-jump or call directly between functions using a relative offset. This cannot be extended to modules
-for the displacement is likely to be too far. Thus in modules the address of a function to call
-must be calculated in a register and then used, requiring two extra instructions.
+                        =================================
+                        INTERNAL KERNEL ABI FOR FR-V ARCH
+                        =================================
+
+The internal FRV kernel ABI is not quite the same as the userspace ABI. A
+number of the registers are used for special purposed, and the ABI is not
+consistent between modules vs core, and MMU vs no-MMU.
+
+This partly stems from the fact that FRV CPUs do not have a separate
+supervisor stack pointer, and most of them do not have any scratch
+registers, thus requiring at least one general purpose register to be
+clobbered in such an event. Also, within the kernel core, it is possible to
+simply jump or call directly between functions using a relative offset.
+This cannot be extended to modules for the displacement is likely to be too
+far. Thus in modules the address of a function to call must be calculated
+in a register and then used, requiring two extra instructions.
 
 This document has the following sections:
 
@@ -39,7 +41,8 @@ When a system call is made, the following registers are effective:
 CPU OPERATING MODES
 ===================
 
-The FR-V CPU has three basic operating modes. In order of increasing capability:
+The FR-V CPU has three basic operating modes. In order of increasing
+capability:
 
   (1) User mode.
 
@@ -47,42 +50,46 @@ The FR-V CPU has three basic operating modes. In order of increasing capability:
 
   (2) Kernel mode.
 
-      Normal kernel mode. There are many additional control registers available that may be
-      accessed in this mode, in addition to all the stuff available to user mode. This has two
-      submodes:
+      Normal kernel mode. There are many additional control registers
+      available that may be accessed in this mode, in addition to all the
+      stuff available to user mode. This has two submodes:
 
       (a) Exceptions enabled (PSR.T == 1).
 
-          Exceptions will invoke the appropriate normal kernel mode handler. On entry to the
-          handler, the PSR.T bit will be cleared.
+          Exceptions will invoke the appropriate normal kernel mode
+          handler. On entry to the handler, the PSR.T bit will be cleared.
 
       (b) Exceptions disabled (PSR.T == 0).
 
-          No exceptions or interrupts may happen. Any mandatory exceptions will cause the CPU to
-          halt unless the CPU is told to jump into debug mode instead.
+          No exceptions or interrupts may happen. Any mandatory exceptions
+          will cause the CPU to halt unless the CPU is told to jump into
+          debug mode instead.
 
   (3) Debug mode.
 
-      No exceptions may happen in this mode. Memory protection and management exceptions will be
-      flagged for later consideration, but the exception handler won't be invoked. Debugging traps
-      such as hardware breakpoints and watchpoints will be ignored. This mode is entered only by
-      debugging events obtained from the other two modes.
+      No exceptions may happen in this mode. Memory protection and
+      management exceptions will be flagged for later consideration, but
+      the exception handler won't be invoked. Debugging traps such as
+      hardware breakpoints and watchpoints will be ignored. This mode is
+      entered only by debugging events obtained from the other two modes.
 
-      All kernel mode registers may be accessed, plus a few extra debugging specific registers.
+      All kernel mode registers may be accessed, plus a few extra debugging
+      specific registers.
 
 
 =================================
 INTERNAL KERNEL-MODE REGISTER ABI
 =================================
 
-There are a number of permanent register assignments that are set up by entry.S in the exception
-prologue. Note that there is a complete set of exception prologues for each of user->kernel
-transition and kernel->kernel transition. There are also user->debug and kernel->debug mode
-transition prologues.
+There are a number of permanent register assignments that are set up by
+entry.S in the exception prologue. Note that there is a complete set of
+exception prologues for each of user->kernel transition and kernel->kernel
+transition. There are also user->debug and kernel->debug mode transition
+prologues.
 
 
         REGISTER        FLAVOUR USE
-        =============== ======= ====================================================
+        =============== ======= ==============================================
         GR1                     Supervisor stack pointer
         GR15                    Current thread info pointer
         GR16                    GP-Rel base register for small data
@@ -92,10 +99,12 @@ transition prologues.
         GR31            NOMMU   Destroyed by debug mode entry
         GR31            MMU     Destroyed by TLB miss kernel mode entry
         CCR.ICC2                Virtual interrupt disablement tracking
-        CCCR.CC3                Cleared by exception prologue (atomic op emulation)
+        CCCR.CC3                Cleared by exception prologue 
+                                (atomic op emulation)
         SCR0            MMU     See mmu-layout.txt.
         SCR1            MMU     See mmu-layout.txt.
-        SCR2            MMU     Save for EAR0 (destroyed by icache insns in debug mode)
+        SCR2            MMU     Save for EAR0 (destroyed by icache insns 
+                                               in debug mode)
         SCR3            MMU     Save for GR31 during debug exceptions
         DAMR/IAMR       NOMMU   Fixed memory protection layout.
         DAMR/IAMR       MMU     See mmu-layout.txt.
@@ -104,18 +113,21 @@ transition prologues.
 Certain registers are also used or modified across function calls:
 
         REGISTER        CALL                            RETURN
-        =============== =============================== ===============================
+        =============== =============================== ======================
         GR0             Fixed Zero                      -
         GR2             Function call frame pointer
         GR3             Special                         Preserved
         GR3-GR7         -                               Clobbered
-        GR8             Function call arg #1            Return value (or clobbered)
-        GR9             Function call arg #2            Return value MSW (or clobbered)
+        GR8             Function call arg #1            Return value 
+                                                        (or clobbered)
+        GR9             Function call arg #2            Return value MSW 
+                                                        (or clobbered)
         GR10-GR13       Function call arg #3-#6         Clobbered
         GR14            -                               Clobbered
         GR15-GR16       Special                         Preserved
         GR17-GR27       -                               Preserved
-        GR28-GR31       Special                         Only accessed explicitly
+        GR28-GR31       Special                         Only accessed 
+                                                        explicitly
         LR              Return address after CALL       Clobbered
         CCR/CCCR        -                               Mostly Clobbered
 
@@ -124,46 +136,53 @@ Certain registers are also used or modified across function calls:
 INTERNAL DEBUG-MODE REGISTER ABI
 ================================
 
-This is the same as the kernel-mode register ABI for functions calls. The difference is that in
-debug-mode there's a different stack and a different exception frame. Almost all the global
-registers from kernel-mode (including the stack pointer) may be changed.
+This is the same as the kernel-mode register ABI for functions calls. The
+difference is that in debug-mode there's a different stack and a different
+exception frame. Almost all the global registers from kernel-mode
+(including the stack pointer) may be changed.
 
         REGISTER        FLAVOUR USE
-        =============== ======= ====================================================
+        =============== ======= ==============================================
         GR1                     Debug stack pointer
         GR16                    GP-Rel base register for small data
-        GR31                    Current debug exception frame pointer (__debug_frame)
+        GR31                    Current debug exception frame pointer 
+                                (__debug_frame)
         SCR3            MMU     Saved value of GR31
 
 
-Note that debug mode is able to interfere with the kernel's emulated atomic ops, so it must be
-exceedingly careful not to do any that would interact with the main kernel in this regard. Hence
-the debug mode code (gdbstub) is almost completely self-contained. The only external code used is
-the sprintf family of functions.
+Note that debug mode is able to interfere with the kernel's emulated atomic
+ops, so it must be exceedingly careful not to do any that would interact
+with the main kernel in this regard. Hence the debug mode code (gdbstub) is
+almost completely self-contained. The only external code used is the
+sprintf family of functions.
 
-Futhermore, break.S is so complicated because single-step mode does not switch off on entry to an
-exception. That means unless manually disabled, single-stepping will blithely go on stepping into
-things like interrupts. See gdbstub.txt for more information.
+Futhermore, break.S is so complicated because single-step mode does not
+switch off on entry to an exception. That means unless manually disabled,
+single-stepping will blithely go on stepping into things like interrupts.
+See gdbstub.txt for more information.
 
 
 ==========================
 VIRTUAL INTERRUPT HANDLING
 ==========================
 
-Because accesses to the PSR is so slow, and to disable interrupts we have to access it twice (once
-to read and once to write), we don't actually disable interrupts at all if we don't have to. What
-we do instead is use the ICC2 condition code flags to note virtual disablement, such that if we
-then do take an interrupt, we note the flag, really disable interrupts, set another flag and resume
-execution at the point the interrupt happened. Setting condition flags as a side effect of an
-arithmetic or logical instruction is really fast. This use of the ICC2 only occurs within the
+Because accesses to the PSR is so slow, and to disable interrupts we have
+to access it twice (once to read and once to write), we don't actually
+disable interrupts at all if we don't have to. What we do instead is use
+the ICC2 condition code flags to note virtual disablement, such that if we
+then do take an interrupt, we note the flag, really disable interrupts, set
+another flag and resume execution at the point the interrupt happened.
+Setting condition flags as a side effect of an arithmetic or logical
+instruction is really fast. This use of the ICC2 only occurs within the
 kernel - it does not affect userspace.
 
 The flags we use are:
 
  (*) CCR.ICC2.Z [Zero flag]
 
-     Set to virtually disable interrupts, clear when interrupts are virtually enabled. Can be
-     modified by logical instructions without affecting the Carry flag.
+     Set to virtually disable interrupts, clear when interrupts are
+     virtually enabled. Can be modified by logical instructions without
+     affecting the Carry flag.
 
  (*) CCR.ICC2.C [Carry flag]
 
@@ -176,8 +195,9 @@ What happens is this:
 
         ICC2.Z is 0, ICC2.C is 1.
 
- (2) An interrupt occurs. The exception prologue examines ICC2.Z and determines that nothing needs
-     doing. This is done simply with an unlikely BEQ instruction.
+ (2) An interrupt occurs. The exception prologue examines ICC2.Z and
+     determines that nothing needs doing. This is done simply with an
+     unlikely BEQ instruction.
 
  (3) The interrupts are disabled (local_irq_disable)
 
@@ -187,48 +207,56 @@ What happens is this:
 
         ICC2.Z would be set to 0.
 
-     A TIHI #2 instruction (trap #2 if condition HI - Z==0 && C==0) would be used to trap if
-     interrupts were now virtually enabled, but physically disabled - which they're not, so the
-     trap isn't taken. The kernel would then be back to state (1).
+     A TIHI #2 instruction (trap #2 if condition HI - Z==0 && C==0) would
+     be used to trap if interrupts were now virtually enabled, but
+     physically disabled - which they're not, so the trap isn't taken. The
+     kernel would then be back to state (1).
 
- (5) An interrupt occurs. The exception prologue examines ICC2.Z and determines that the interrupt
-     shouldn't actually have happened. It jumps aside, and there disabled interrupts by setting
-     PSR.PIL to 14 and then it clears ICC2.C.
+ (5) An interrupt occurs. The exception prologue examines ICC2.Z and
+     determines that the interrupt shouldn't actually have happened. It
+     jumps aside, and there disabled interrupts by setting PSR.PIL to 14
+     and then it clears ICC2.C.
 
  (6) If interrupts were then saved and disabled again (local_irq_save):
 
-        ICC2.Z would be shifted into the save variable and masked off (giving a 1).
+        ICC2.Z would be shifted into the save variable and masked off 
+        (giving a 1).
 
-        ICC2.Z would then be set to 1 (thus unchanged), and ICC2.C would be unaffected (ie: 0).
+        ICC2.Z would then be set to 1 (thus unchanged), and ICC2.C would be
+        unaffected (ie: 0).
 
  (7) If interrupts were then restored from state (6) (local_irq_restore):
 
-        ICC2.Z would be set to indicate the result of XOR'ing the saved value (ie: 1) with 1, which
-        gives a result of 0 - thus leaving ICC2.Z set.
+        ICC2.Z would be set to indicate the result of XOR'ing the saved
+        value (ie: 1) with 1, which gives a result of 0 - thus leaving
+        ICC2.Z set.
 
         ICC2.C would remain unaffected (ie: 0).
 
-     A TIHI #2 instruction would be used to again assay the current state, but this would do
-     nothing as Z==1.
+     A TIHI #2 instruction would be used to again assay the current state,
+     but this would do nothing as Z==1.
 
  (8) If interrupts were then enabled (local_irq_enable):
 
-        ICC2.Z would be cleared. ICC2.C would be left unaffected. Both flags would now be 0.
+        ICC2.Z would be cleared. ICC2.C would be left unaffected. Both
+        flags would now be 0.
 
-     A TIHI #2 instruction again issued to assay the current state would then trap as both Z==0
-     [interrupts virtually enabled] and C==0 [interrupts really disabled] would then be true.
+     A TIHI #2 instruction again issued to assay the current state would
+     then trap as both Z==0 [interrupts virtually enabled] and C==0
+     [interrupts really disabled] would then be true.
 
- (9) The trap #2 handler would simply enable hardware interrupts (set PSR.PIL to 0), set ICC2.C to
-     1 and return.
+ (9) The trap #2 handler would simply enable hardware interrupts 
+     (set PSR.PIL to 0), set ICC2.C to 1 and return.
 
 (10) Immediately upon returning, the pending interrupt would be taken.
 
-(11) The interrupt handler would take the path of actually processing the interrupt (ICC2.Z is
-     clear, BEQ fails as per step (2)).
+(11) The interrupt handler would take the path of actually processing the
+     interrupt (ICC2.Z is clear, BEQ fails as per step (2)).
 
-(12) The interrupt handler would then set ICC2.C to 1 since hardware interrupts are definitely
-     enabled - or else the kernel wouldn't be here.
+(12) The interrupt handler would then set ICC2.C to 1 since hardware
+     interrupts are definitely enabled - or else the kernel wouldn't be here.
 
 (13) On return from the interrupt handler, things would be back to state (1).
 
-This trap (#2) is only available in kernel mode. In user mode it will result in SIGILL.
+This trap (#2) is only available in kernel mode. In user mode it will
+result in SIGILL.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index f8cb55c30b0..b3a6187e530 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1,4 +1,4 @@
-February 2003             Kernel Parameters                     v2.5.59
+                          Kernel Parameters
                           ~~~~~~~~~~~~~~~~~
 
 The following is a consolidated list of the kernel parameters as implemented
@@ -17,9 +17,17 @@ are specified on the kernel command line with the module name plus
 
         usbcore.blinkenlights=1
 
-The text in square brackets at the beginning of the description states the
-restrictions on the kernel for the said kernel parameter to be valid. The
-restrictions referred to are that the relevant option is valid if:
+This document may not be entirely up to date and comprehensive. The command
+"modinfo -p ${modulename}" shows a current list of all parameters of a loadable
+module. Loadable modules, after being loaded into the running kernel, also
+reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
+parameters may be changed at runtime by the command
+"echo -n ${value} > /sys/module/${modulename}/parameters/${parm}".
+
+The parameters listed below are only valid if certain kernel build options were
+enabled and if respective hardware is present. The text in square brackets at
+the beginning of each description states the restrictions within which a
+parameter is applicable:
 
         ACPI    ACPI support is enabled.
         ALSA    ALSA sound support is enabled.
@@ -1046,10 +1054,10 @@ running once the system is up.
         noltlbs         [PPC] Do not use large page/tlb entries for kernel
                         lowmem mapping on PPC40x.
 
-        nomce           [IA-32] Machine Check Exception
-
         nomca           [IA-64] Disable machine check abort handling
 
+        nomce           [IA-32] Machine Check Exception
+
         noresidual      [PPC] Don't use residual data on PReP machines.
 
         noresume        [SWSUSP] Disables resume and restores original swap
@@ -1682,20 +1690,6 @@ running once the system is up.
 
 
 ______________________________________________________________________
-Changelog:
-
-2000-06-??      Mr. Unknown
-        The last known update (for 2.4.0) - the changelog was not kept before.
-
-2002-11-24      Petr Baudis <pasky@ucw.cz>
-                Randy Dunlap <randy.dunlap@verizon.net>
-        Update for 2.5.49, description for most of the options introduced,
-        references to other documentation (C files, READMEs, ..), added S390,
-        PPC, SPARC, MTD, ALSA and OSS category. Minor corrections and
-        reformatting.
-
-2005-10-19      Randy Dunlap <rdunlap@xenotime.net>
-        Lots of typos, whitespace, some reformatting.
 
 TODO:
 
diff --git a/Documentation/networking/packet_mmap.txt b/Documentation/networking/packet_mmap.txt
index 4fc8e987432..aaf99d5f0da 100644
--- a/Documentation/networking/packet_mmap.txt
+++ b/Documentation/networking/packet_mmap.txt
@@ -254,7 +254,7 @@ and, the number of frames be
 
         <block number> * <block size> / <frame size>
 
-Suposse the following parameters, which apply for 2.6 kernel and an
+Suppose the following parameters, which apply for 2.6 kernel and an
 i386 architecture:
 
         <size-max> = 131072 bytes
diff --git a/Documentation/networking/tuntap.txt b/Documentation/networking/tuntap.txt
index ec3d109d787..76750fb9151 100644
--- a/Documentation/networking/tuntap.txt
+++ b/Documentation/networking/tuntap.txt
@@ -138,7 +138,7 @@ This means that you have to read/write IP packets when you are using tun and
 ethernet frames when using tap.
 
 5. What is the difference between BPF and TUN/TAP driver?
-BFP is an advanced packet filter. It can be attached to existing
+BPF is an advanced packet filter. It can be attached to existing
 network interface. It does not provide a virtual network interface.
 A TUN/TAP driver does provide a virtual network interface and it is possible
 to attach BPF to this interface.
diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c
index e3c5fca0aa8..2b0cfce24a6 100644
--- a/arch/i386/kernel/crash.c
+++ b/arch/i386/kernel/crash.c
@@ -69,7 +69,7 @@ static void crash_save_this_cpu(struct pt_regs *regs, int cpu)
          * for the data I pass, and I need tags
          * on the data to indicate what information I have
          * squirrelled away.  ELF notes happen to provide
-         * all of that that no need to invent something new.
+         * all of that, so there is no need to invent something new.
          */
         buf = (u32*)per_cpu_ptr(crash_notes, cpu);
         if (!buf)
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 5b26af8597f..e112d1a5dab 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -1740,7 +1740,7 @@ EXPORT_SYMBOL(blk_run_queue);
 
 /**
  * blk_cleanup_queue: - release a &request_queue_t when it is no longer needed
- * @q:    the request queue to be released
+ * @kobj:    the kobj belonging of the request queue to be released
  *
  * Description:
  *     blk_cleanup_queue is the pair to blk_init_queue() or
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index aecd9e0c261..64fd8e79ea4 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -78,8 +78,7 @@ void dm_put_target_type(struct target_type *t)
         if (--ti->use == 0)
                 module_put(ti->tt.module);
 
-        if (ti->use < 0)
-                BUG();
+        BUG_ON(ti->use < 0);
         up_read(&_lock);
 
         return;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 9b374c91db6..6081941de1b 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1558,8 +1558,7 @@ static int init_resync(conf_t *conf)
         int buffs;
 
         buffs = RESYNC_WINDOW / RESYNC_BLOCK_SIZE;
-        if (conf->r1buf_pool)
-                BUG();
+        BUG_ON(conf->r1buf_pool);
         conf->r1buf_pool = mempool_create(buffs, r1buf_pool_alloc, r1buf_pool_free,
                                           conf->poolinfo);
         if (!conf->r1buf_pool)
@@ -1732,8 +1731,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
                             !conf->fullsync &&
                             !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
                                 break;
-                        if (sync_blocks < (PAGE_SIZE>>9))
-                                BUG();
+                        BUG_ON(sync_blocks < (PAGE_SIZE>>9));
                         if (len > (sync_blocks<<9))
                                 len = sync_blocks<<9;
                 }
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ab90a6d1202..617012bc107 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1117,8 +1117,7 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error)
         for (i=0; i<conf->copies; i++)
                 if (r10_bio->devs[i].bio == bio)
                         break;
-        if (i == conf->copies)
-                BUG();
+        BUG_ON(i == conf->copies);
         update_head_pos(i, r10_bio);
         d = r10_bio->devs[i].devnum;
 
@@ -1518,8 +1517,7 @@ static int init_resync(conf_t *conf)
         int buffs;
 
         buffs = RESYNC_WINDOW / RESYNC_BLOCK_SIZE;
-        if (conf->r10buf_pool)
-                BUG();
+        BUG_ON(conf->r10buf_pool);
         conf->r10buf_pool = mempool_create(buffs, r10buf_pool_alloc, r10buf_pool_free, conf);
         if (!conf->r10buf_pool)
                 return -ENOMEM;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index dae740adaf6..31843604049 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -73,10 +73,8 @@ static void print_raid5_conf (raid5_conf_t *conf);
 static void __release_stripe(raid5_conf_t *conf, struct stripe_head *sh)
 {
         if (atomic_dec_and_test(&sh->count)) {
-                if (!list_empty(&sh->lru))
-                        BUG();
-                if (atomic_read(&conf->active_stripes)==0)
-                        BUG();
+                BUG_ON(!list_empty(&sh->lru));
+                BUG_ON(atomic_read(&conf->active_stripes)==0);
                 if (test_bit(STRIPE_HANDLE, &sh->state)) {
                         if (test_bit(STRIPE_DELAYED, &sh->state))
                                 list_add_tail(&sh->lru, &conf->delayed_list);
@@ -184,10 +182,8 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int
         raid5_conf_t *conf = sh->raid_conf;
         int i;
 
-        if (atomic_read(&sh->count) != 0)
-                BUG();
-        if (test_bit(STRIPE_HANDLE, &sh->state))
-                BUG();
+        BUG_ON(atomic_read(&sh->count) != 0);
+        BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));
         
         CHECK_DEVLOCK();
         PRINTK("init_stripe called, stripe %llu\n", 
@@ -269,8 +265,7 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector
                                 init_stripe(sh, sector, pd_idx, disks);
                 } else {
                         if (atomic_read(&sh->count)) {
-                                if (!list_empty(&sh->lru))
-                                        BUG();
+                          BUG_ON(!list_empty(&sh->lru));
                         } else {
                                 if (!test_bit(STRIPE_HANDLE, &sh->state))
                                         atomic_inc(&conf->active_stripes);
@@ -465,8 +460,7 @@ static int drop_one_stripe(raid5_conf_t *conf)
         spin_unlock_irq(&conf->device_lock);
         if (!sh)
                 return 0;
-        if (atomic_read(&sh->count))
-                BUG();
+        BUG_ON(atomic_read(&sh->count));
         shrink_buffers(sh, conf->pool_size);
         kmem_cache_free(conf->slab_cache, sh);
         atomic_dec(&conf->active_stripes);
@@ -882,8 +876,7 @@ static void compute_parity(struct stripe_head *sh, int method)
         ptr[0] = page_address(sh->dev[pd_idx].page);
         switch(method) {
         case READ_MODIFY_WRITE:
-                if (!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags))
-                        BUG();
+                BUG_ON(!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags));
                 for (i=disks ; i-- ;) {
                         if (i==pd_idx)
                                 continue;
@@ -896,7 +889,7 @@ static void compute_parity(struct stripe_head *sh, int method)
                                 if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
                                         wake_up(&conf->wait_for_overlap);
 
-                                if (sh->dev[i].written) BUG();
+                                BUG_ON(sh->dev[i].written);
                                 sh->dev[i].written = chosen;
                                 check_xor();
                         }
@@ -912,7 +905,7 @@ static void compute_parity(struct stripe_head *sh, int method)
                                 if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
                                         wake_up(&conf->wait_for_overlap);
 
-                                if (sh->dev[i].written) BUG();
+                                BUG_ON(sh->dev[i].written);
                                 sh->dev[i].written = chosen;
                         }
                 break;
@@ -995,8 +988,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
         if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9))
                 goto overlap;
 
-        if (*bip && bi->bi_next && (*bip) != bi->bi_next)
-                BUG();
+        BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next);
         if (*bip)
                 bi->bi_next = *bip;
         *bip = bi;
@@ -1430,8 +1422,7 @@ static void handle_stripe(struct stripe_head *sh)
                 set_bit(STRIPE_HANDLE, &sh->state);
                 if (failed == 0) {
                         char *pagea;
-                        if (uptodate != disks)
-                                BUG();
+                        BUG_ON(uptodate != disks);
                         compute_parity(sh, CHECK_PARITY);
                         uptodate--;
                         pagea = page_address(sh->dev[sh->pd_idx].page);
@@ -2096,8 +2087,7 @@ static void raid5d (mddev_t *mddev)
 
                 list_del_init(first);
                 atomic_inc(&sh->count);
-                if (atomic_read(&sh->count)!= 1)
-                        BUG();
+                BUG_ON(atomic_read(&sh->count)!= 1);
                 spin_unlock_irq(&conf->device_lock);
                 
                 handled++;
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index ab64b37e499..bc69355e010 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -91,10 +91,8 @@ static void print_raid6_conf (raid6_conf_t *conf);
 static void __release_stripe(raid6_conf_t *conf, struct stripe_head *sh)
 {
         if (atomic_dec_and_test(&sh->count)) {
-                if (!list_empty(&sh->lru))
-                        BUG();
-                if (atomic_read(&conf->active_stripes)==0)
-                        BUG();
+                BUG_ON(!list_empty(&sh->lru));
+                BUG_ON(atomic_read(&conf->active_stripes)==0);
                 if (test_bit(STRIPE_HANDLE, &sh->state)) {
                         if (test_bit(STRIPE_DELAYED, &sh->state))
                                 list_add_tail(&sh->lru, &conf->delayed_list);
@@ -202,10 +200,8 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx)
         raid6_conf_t *conf = sh->raid_conf;
         int disks = conf->raid_disks, i;
 
-        if (atomic_read(&sh->count) != 0)
-                BUG();
-        if (test_bit(STRIPE_HANDLE, &sh->state))
-                BUG();
+        BUG_ON(atomic_read(&sh->count) != 0);
+        BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));
 
         CHECK_DEVLOCK();
         PRINTK("init_stripe called, stripe %llu\n",
@@ -284,13 +280,11 @@ static struct stripe_head *get_active_stripe(raid6_conf_t *conf, sector_t sector
                                 init_stripe(sh, sector, pd_idx);
                 } else {
                         if (atomic_read(&sh->count)) {
-                                if (!list_empty(&sh->lru))
-                                        BUG();
+                                BUG_ON(!list_empty(&sh->lru));
                         } else {
                                 if (!test_bit(STRIPE_HANDLE, &sh->state))
                                         atomic_inc(&conf->active_stripes);
-                                if (list_empty(&sh->lru))
-                                        BUG();
+                                BUG_ON(list_empty(&sh->lru));
                                 list_del_init(&sh->lru);
                         }
                 }
@@ -353,8 +347,7 @@ static int drop_one_stripe(raid6_conf_t *conf)
         spin_unlock_irq(&conf->device_lock);
         if (!sh)
                 return 0;
-        if (atomic_read(&sh->count))
-                BUG();
+        BUG_ON(atomic_read(&sh->count));
         shrink_buffers(sh, conf->raid_disks);
         kmem_cache_free(conf->slab_cache, sh);
         atomic_dec(&conf->active_stripes);
@@ -780,7 +773,7 @@ static void compute_parity(struct stripe_head *sh, int method)
                                 if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
                                         wake_up(&conf->wait_for_overlap);
 
-                                if (sh->dev[i].written) BUG();
+                                BUG_ON(sh->dev[i].written);
                                 sh->dev[i].written = chosen;
                         }
                 break;
@@ -970,8 +963,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
         if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9))
                 goto overlap;
 
-        if (*bip && bi->bi_next && (*bip) != bi->bi_next)
-                BUG();
+        BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next);
         if (*bip)
                 bi->bi_next = *bip;
         *bip = bi;
@@ -1906,8 +1898,7 @@ static void raid6d (mddev_t *mddev)
 
                 list_del_init(first);
                 atomic_inc(&sh->count);
-                if (atomic_read(&sh->count)!= 1)
-                        BUG();
+                BUG_ON(atomic_read(&sh->count)!= 1);
                 spin_unlock_irq(&conf->device_lock);
 
                 handled++;
diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig
index 0f6bb2e625d..a7ec5954caf 100644
--- a/drivers/mtd/chips/Kconfig
+++ b/drivers/mtd/chips/Kconfig
@@ -200,27 +200,6 @@ config MTD_CFI_AMDSTD
           provides support for one of those command sets, used on chips
           including the AMD Am29LV320.
 
-config MTD_CFI_AMDSTD_RETRY
-        int "Retry failed commands (erase/program)"
-        depends on MTD_CFI_AMDSTD
-        default "0"
-        help
-          Some chips, when attached to a shared bus, don't properly filter
-          bus traffic that is destined to other devices.  This broken
-          behavior causes erase and program sequences to be aborted when
-          the sequences are mixed with traffic for other devices.
-
-          SST49LF040 (and related) chips are know to be broken.
-
-config MTD_CFI_AMDSTD_RETRY_MAX
-        int "Max retries of failed commands (erase/program)"
-        depends on MTD_CFI_AMDSTD_RETRY
-        default "0"
-        help
-          If you have an SST49LF040 (or related chip) then this value should
-          be set to at least 1.  This can also be adjusted at driver load
-          time with the retry_cmd_max module parameter.
-
 config MTD_CFI_STAA
         tristate "Support for ST (Advanced Architecture) flash chips"
         depends on MTD_GEN_PROBE
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index ce99845d826..066e22b01a9 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -539,8 +539,7 @@ rx_status_loop:
                 unsigned buflen;
 
                 skb = cp->rx_skb[rx_tail].skb;
-                if (!skb)
-                        BUG();
+                BUG_ON(!skb);
 
                 desc = &cp->rx_ring[rx_tail];
                 status = le32_to_cpu(desc->opts1);
@@ -723,8 +722,7 @@ static void cp_tx (struct cp_private *cp)
                         break;
 
                 skb = cp->tx_skb[tx_tail].skb;
-                if (!skb)
-                        BUG();
+                BUG_ON(!skb);
 
                 pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping,
                                  cp->tx_skb[tx_tail].len, PCI_DMA_TODEVICE);
@@ -1550,8 +1548,7 @@ static void cp_get_ethtool_stats (struct net_device *dev,
         tmp_stats[i++] = le16_to_cpu(nic_stats->tx_abort);
         tmp_stats[i++] = le16_to_cpu(nic_stats->tx_underrun);
         tmp_stats[i++] = cp->cp_stats.rx_frags;
-        if (i != CP_NUM_STATS)
-                BUG();
+        BUG_ON(i != CP_NUM_STATS);
 
         pci_free_consistent(cp->pdev, sizeof(*nic_stats), nic_stats, dma);
 }
@@ -1856,8 +1853,7 @@ static void cp_remove_one (struct pci_dev *pdev)
         struct net_device *dev = pci_get_drvdata(pdev);
         struct cp_private *cp = netdev_priv(dev);
 
-        if (!dev)
-                BUG();
+        BUG_ON(!dev);
         unregister_netdev(dev);
         iounmap(cp->regs);
         if (cp->wol_enabled) pci_set_power_state (pdev, PCI_D0);
diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 64e2caf3083..fabc0607b0f 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -765,8 +765,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         BUGMSG(D_DURING, "in arcnet_interrupt\n");
         
         lp = dev->priv;
-        if (!lp)
-                BUG();
+        BUG_ON(!lp);
                 
         spin_lock(&lp->lock);
 
diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 15032f2c781..c4e12b5cbb9 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -608,8 +608,7 @@ static void b44_tx(struct b44 *bp)
                 struct ring_info *rp = &bp->tx_buffers[cons];
                 struct sk_buff *skb = rp->skb;
 
-                if (unlikely(skb == NULL))
-                        BUG();
+                BUG_ON(skb == NULL);
 
                 pci_unmap_single(bp->pdev,
                                  pci_unmap_addr(rp, mapping),
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 30ff8ea1a40..4391bf4bf57 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1093,8 +1093,7 @@ static int process_responses(struct adapter *adapter, int budget)
                 if (likely(e->DataValid)) {
                         struct freelQ *fl = &sge->freelQ[e->FreelistQid];
 
-                        if (unlikely(!e->Sop || !e->Eop))
-                                BUG();
+                        BUG_ON(!e->Sop || !e->Eop);
                         if (unlikely(e->Offload))
                                 unexpected_offload(adapter, fl);
                         else
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 49cd096a3c3..add8dc4aa7b 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -3308,8 +3308,7 @@ e1000_clean(struct net_device *poll_dev, int *budget)
 
         while (poll_dev != &adapter->polling_netdev[i]) {
                 i++;
-                if (unlikely(i == adapter->num_rx_queues))
-                        BUG();
+                BUG_ON(i == adapter->num_rx_queues);
         }
 
         if (likely(adapter->num_tx_queues == 1)) {
diff --git a/drivers/net/eql.c b/drivers/net/eql.c
index aa1569182fd..815436c6170 100644
--- a/drivers/net/eql.c
+++ b/drivers/net/eql.c
@@ -203,8 +203,7 @@ static int eql_open(struct net_device *dev)
         printk(KERN_INFO "%s: remember to turn off Van-Jacobson compression on "
                "your slave devices.\n", dev->name);
 
-        if (!list_empty(&eql->queue.all_slaves))
-                BUG();
+        BUG_ON(!list_empty(&eql->queue.all_slaves));
 
         eql->min_slaves = 1;
         eql->max_slaves = EQL_DEFAULT_MAX_SLAVES; /* 4 usually... */
diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c
index 63d38fbbd04..f530686bd09 100644
--- a/drivers/net/irda/sa1100_ir.c
+++ b/drivers/net/irda/sa1100_ir.c
@@ -695,8 +695,7 @@ static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
                 /*
                  * We must not be transmitting...
                  */
-                if (si->txskb)
-                        BUG();
+                BUG_ON(si->txskb);
 
                 netif_stop_queue(dev);
 
diff --git a/drivers/net/ne2k-pci.c b/drivers/net/ne2k-pci.c
index d11821dd86e..ced9fdb8335 100644
--- a/drivers/net/ne2k-pci.c
+++ b/drivers/net/ne2k-pci.c
@@ -645,9 +645,7 @@ static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
 {
         struct net_device *dev = pci_get_drvdata(pdev);
 
-        if (!dev)
-                BUG();
-
+        BUG_ON(!dev);
         unregister_netdev(dev);
         release_region(dev->base_addr, NE_IO_EXTENT);
         free_netdev(dev);
diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c
index 8e9b1a537de..706aed7d717 100644
--- a/drivers/net/ns83820.c
+++ b/drivers/net/ns83820.c
@@ -568,8 +568,7 @@ static inline int ns83820_add_rx_skb(struct ns83820 *dev, struct sk_buff *skb)
 #endif
 
         sg = dev->rx_info.descs + (next_empty * DESC_SIZE);
-        if (unlikely(NULL != dev->rx_info.skbs[next_empty]))
-                BUG();
+        BUG_ON(NULL != dev->rx_info.skbs[next_empty]);
         dev->rx_info.skbs[next_empty] = skb;
 
         dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
diff --git a/drivers/net/starfire.c b/drivers/net/starfire.c
index 35b18057fbd..45ad036733e 100644
--- a/drivers/net/starfire.c
+++ b/drivers/net/starfire.c
@@ -2122,8 +2122,7 @@ static void __devexit starfire_remove_one (struct pci_dev *pdev)
         struct net_device *dev = pci_get_drvdata(pdev);
         struct netdev_private *np = netdev_priv(dev);
 
-        if (!dev)
-                BUG();
+        BUG_ON(!dev);
 
         unregister_netdev(dev);
 
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 770e6b6cec6..0b535807217 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -2959,9 +2959,7 @@ static void tg3_tx(struct tg3 *tp)
                 struct sk_buff *skb = ri->skb;
                 int i;
 
-                if (unlikely(skb == NULL))
-                        BUG();
-
+                BUG_ON(skb == NULL);
                 pci_unmap_single(tp->pdev,
                                  pci_unmap_addr(ri, mapping),
                                  skb_headlen(skb),
@@ -2972,12 +2970,10 @@ static void tg3_tx(struct tg3 *tp)
                 sw_idx = NEXT_TX(sw_idx);
 
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                        if (unlikely(sw_idx == hw_idx))
-                                BUG();
+                        BUG_ON(sw_idx == hw_idx);
 
                         ri = &tp->tx_buffers[sw_idx];
-                        if (unlikely(ri->skb != NULL))
-                                BUG();
+                        BUG_ON(ri->skb != NULL);
 
                         pci_unmap_page(tp->pdev,
                                        pci_unmap_addr(ri, mapping),
@@ -4928,9 +4924,8 @@ static int tg3_halt_cpu(struct tg3 *tp, u32 offset)
 {
         int i;
 
-        if (offset == TX_CPU_BASE &&
-            (tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
-                BUG();
+        BUG_ON(offset == TX_CPU_BASE &&
+            (tp->tg3_flags2 & TG3_FLG2_5705_PLUS));
 
         if (offset == RX_CPU_BASE) {
                 for (i = 0; i < 10000; i++) {
diff --git a/drivers/net/tokenring/abyss.c b/drivers/net/tokenring/abyss.c
index 9345e68c451..649d8ea354f 100644
--- a/drivers/net/tokenring/abyss.c
+++ b/drivers/net/tokenring/abyss.c
@@ -438,8 +438,7 @@ static void __devexit abyss_detach (struct pci_dev *pdev)
 {
         struct net_device *dev = pci_get_drvdata(pdev);
         
-        if (!dev)
-                BUG();
+        BUG_ON(!dev);
         unregister_netdev(dev);
         release_region(dev->base_addr-0x10, ABYSS_IO_EXTENT);
         free_irq(dev->irq, dev);
diff --git a/drivers/net/tokenring/madgemc.c b/drivers/net/tokenring/madgemc.c
index 3a25d191ea4..19e6f4dfd69 100644
--- a/drivers/net/tokenring/madgemc.c
+++ b/drivers/net/tokenring/madgemc.c
@@ -735,8 +735,7 @@ static int __devexit madgemc_remove(struct device *device)
         struct net_local *tp;
         struct card_info *card;
 
-        if (!dev)
-                BUG();
+        BUG_ON(!dev);
 
         tp = dev->priv;
         card = tp->tmspriv;
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 9dce522526c..bca89cff85a 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -5573,8 +5573,7 @@ static void ipw_adhoc_create(struct ipw_priv *priv,
         case IEEE80211_52GHZ_BAND:
                 network->mode = IEEE_A;
                 i = ieee80211_channel_to_index(priv->ieee, priv->channel);
-                if (i == -1)
-                        BUG();
+                BUG_ON(i == -1);
                 if (geo->a[i].flags & IEEE80211_CH_PASSIVE_ONLY) {
                         IPW_WARNING("Overriding invalid channel\n");
                         priv->channel = geo->a[0].channel;
@@ -5587,8 +5586,7 @@ static void ipw_adhoc_create(struct ipw_priv *priv,
                 else
                         network->mode = IEEE_B;
                 i = ieee80211_channel_to_index(priv->ieee, priv->channel);
-                if (i == -1)
-                        BUG();
+                BUG_ON(i == -1);
                 if (geo->bg[i].flags & IEEE80211_CH_PASSIVE_ONLY) {
                         IPW_WARNING("Overriding invalid channel\n");
                         priv->channel = geo->bg[0].channel;
@@ -6715,8 +6713,7 @@ static int ipw_qos_association(struct ipw_priv *priv,
 
         switch (priv->ieee->iw_mode) {
         case IW_MODE_ADHOC:
-                if (!(network->capability & WLAN_CAPABILITY_IBSS))
-                        BUG();
+                BUG_ON(!(network->capability & WLAN_CAPABILITY_IBSS));
 
                 qos_data = &ibss_data;
                 break;
diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c
index 75d56bfef0e..fd0f43b7db5 100644
--- a/drivers/net/yellowfin.c
+++ b/drivers/net/yellowfin.c
@@ -1441,8 +1441,7 @@ static void __devexit yellowfin_remove_one (struct pci_dev *pdev)
         struct net_device *dev = pci_get_drvdata(pdev);
         struct yellowfin_private *np;
 
-        if (!dev)
-                BUG();
+        BUG_ON(!dev);
         np = netdev_priv(dev);
 
         pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, 
diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c
index 8fd71ab02ef..b842377cb0c 100644
--- a/drivers/s390/block/dasd_erp.c
+++ b/drivers/s390/block/dasd_erp.c
@@ -32,9 +32,8 @@ dasd_alloc_erp_request(char *magic, int cplength, int datasize,
         int size;
 
         /* Sanity checks */
-        if ( magic == NULL || datasize > PAGE_SIZE ||
-             (cplength*sizeof(struct ccw1)) > PAGE_SIZE)
-                BUG();
+        BUG_ON( magic == NULL || datasize > PAGE_SIZE ||
+             (cplength*sizeof(struct ccw1)) > PAGE_SIZE);
 
         size = (sizeof(struct dasd_ccw_req) + 7L) & -8L;
         if (cplength > 0)
@@ -125,8 +124,7 @@ dasd_default_erp_postaction(struct dasd_ccw_req * cqr)
         struct dasd_device *device;
         int success;
 
-        if (cqr->refers == NULL || cqr->function == NULL)
-                BUG();
+        BUG_ON(cqr->refers == NULL || cqr->function == NULL);
 
         device = cqr->device;
         success = cqr->status == DASD_CQR_DONE;
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index ac10dfb20a6..91e93c78f57 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -24,7 +24,7 @@
 
 /*
  * The room for the SCCB (only for writing) is not equal to a pages size
- * (as it is specified as the maximum size in the the SCLP ducumentation)
+ * (as it is specified as the maximum size in the the SCLP documentation)
  * because of the additional data structure described above.
  */
 #define MAX_SCCB_ROOM (PAGE_SIZE - sizeof(struct sclp_buffer))
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 5ced2725d6c..5c65cf3e5cc 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -198,9 +198,7 @@ tapeblock_request_fn(request_queue_t *queue)
 
         device = (struct tape_device *) queue->queuedata;
         DBF_LH(6, "tapeblock_request_fn(device=%p)\n", device);
-        if (device == NULL)
-                BUG();
-
+        BUG_ON(device == NULL);
         tapeblock_trigger_requeue(device);
 }
 
@@ -307,8 +305,7 @@ tapeblock_revalidate_disk(struct gendisk *disk)
         int                     rc;
 
         device = (struct tape_device *) disk->private_data;
-        if (!device)
-                BUG();
+        BUG_ON(!device);
 
         if (!device->blk_data.medium_changed)
                 return 0;
@@ -440,11 +437,9 @@ tapeblock_ioctl(
 
         rc     = 0;
         disk   = inode->i_bdev->bd_disk;
-        if (!disk)
-                BUG();
+        BUG_ON(!disk);
         device = disk->private_data;
-        if (!device)
-                BUG();
+        BUG_ON(!device);
         minor  = iminor(inode);
 
         DBF_LH(6, "tapeblock_ioctl(0x%0x)\n", command);
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index edcf05d5d56..5d6b7a57b02 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -675,9 +675,8 @@ lcs_ready_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
         int index, rc;
 
         LCS_DBF_TEXT(5, trace, "rdybuff");
-        if (buffer->state != BUF_STATE_LOCKED &&
-            buffer->state != BUF_STATE_PROCESSED)
-                BUG();
+        BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+                buffer->state != BUF_STATE_PROCESSED);
         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
         buffer->state = BUF_STATE_READY;
         index = buffer - channel->iob;
@@ -701,8 +700,7 @@ __lcs_processed_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
         int index, prev, next;
 
         LCS_DBF_TEXT(5, trace, "prcsbuff");
-        if (buffer->state != BUF_STATE_READY)
-                BUG();
+        BUG_ON(buffer->state != BUF_STATE_READY);
         buffer->state = BUF_STATE_PROCESSED;
         index = buffer - channel->iob;
         prev = (index - 1) & (LCS_NUM_BUFFS - 1);
@@ -734,9 +732,8 @@ lcs_release_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
         unsigned long flags;
 
         LCS_DBF_TEXT(5, trace, "relbuff");
-        if (buffer->state != BUF_STATE_LOCKED &&
-            buffer->state != BUF_STATE_PROCESSED)
-                BUG();
+        BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+                buffer->state != BUF_STATE_PROCESSED);
         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
         buffer->state = BUF_STATE_EMPTY;
         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
diff --git a/drivers/scsi/aic7xxx/Kconfig.aic7xxx b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
index 6c2c395554f..5517da5855f 100644
--- a/drivers/scsi/aic7xxx/Kconfig.aic7xxx
+++ b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
@@ -86,7 +86,7 @@ config AIC7XXX_DEBUG_MASK
         default "0"
         help
         Bit mask of debug options that is only valid if the
-        CONFIG_AIC7XXX_DEBUG_ENBLE option is enabled.  The bits in this mask
+        CONFIG_AIC7XXX_DEBUG_ENABLE option is enabled.  The bits in this mask
         are defined in the drivers/scsi/aic7xxx/aic7xxx.h - search for the
         variable ahc_debug in that file to find them.
 
diff --git a/drivers/serial/jsm/jsm.h b/drivers/serial/jsm/jsm.h
index dfc1e86d3aa..043f50b1d10 100644
--- a/drivers/serial/jsm/jsm.h
+++ b/drivers/serial/jsm/jsm.h
@@ -20,7 +20,7 @@
  *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
- * Wendy Xiong   <wendyx@us.ltcfwd.linux.ibm.com>
+ * Wendy Xiong   <wendyx@us.ibm.com>
  *
  ***********************************************************************/
 
diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c
index b1b66e71d28..b3e1f71be4d 100644
--- a/drivers/serial/jsm/jsm_driver.c
+++ b/drivers/serial/jsm/jsm_driver.c
@@ -20,7 +20,7 @@
  *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
- * Wendy Xiong   <wendyx@us.ltcfwd.linux.ibm.com>
+ * Wendy Xiong   <wendyx@us.ibm.com>
  *
  *
  ***********************************************************************/
diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c
index 87e4e2cf8ce..a5fc589d6ef 100644
--- a/drivers/serial/jsm/jsm_neo.c
+++ b/drivers/serial/jsm/jsm_neo.c
@@ -20,7 +20,7 @@
  *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
- * Wendy Xiong   <wendyx@us.ltcfwd.linux.ibm.com>
+ * Wendy Xiong   <wendyx@us.ibm.com>
  *
  ***********************************************************************/
 #include <linux/delay.h>        /* For udelay */
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 910a8ed74b5..b05d1b21877 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -929,8 +929,7 @@ do_holes:
                         block_in_page += this_chunk_blocks;
                         dio->blocks_available -= this_chunk_blocks;
 next_block:
-                        if (dio->block_in_file > dio->final_block_in_request)
-                                BUG();
+                        BUG_ON(dio->block_in_file > dio->final_block_in_request);
                         if (dio->block_in_file == dio->final_block_in_request)
                                 break;
                 }
diff --git a/fs/dquot.c b/fs/dquot.c
index 6b388692093..81d87a413c6 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -590,8 +590,7 @@ we_slept:
         atomic_dec(&dquot->dq_count);
 #ifdef __DQUOT_PARANOIA
         /* sanity check */
-        if (!list_empty(&dquot->dq_free))
-                BUG();
+        BUG_ON(!list_empty(&dquot->dq_free));
 #endif
         put_dquot_last(dquot);
         spin_unlock(&dq_list_lock);
@@ -666,8 +665,7 @@ we_slept:
                 return NODQUOT;
         }
 #ifdef __DQUOT_PARANOIA
-        if (!dquot->dq_sb)      /* Has somebody invalidated entry under us? */
-                BUG();
+        BUG_ON(!dquot->dq_sb);  /* Has somebody invalidated entry under us? */
 #endif
 
         return dquot;
diff --git a/fs/exec.c b/fs/exec.c
index 950ebd43cdc..0291a68a362 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -561,7 +561,7 @@ static int exec_mmap(struct mm_struct *mm)
         arch_pick_mmap_layout(mm);
         if (old_mm) {
                 up_read(&old_mm->mmap_sem);
-                if (active_mm != old_mm) BUG();
+                BUG_ON(active_mm != old_mm);
                 mmput(old_mm);
                 return 0;
         }
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 2a2479196f9..d35cbc6bc11 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -453,8 +453,7 @@ static void send_sigio_to_task(struct task_struct *p,
                         /* Make sure we are called with one of the POLL_*
                            reasons, otherwise we could leak kernel stack into
                            userspace.  */
-                        if ((reason & __SI_MASK) != __SI_POLL)
-                                BUG();
+                        BUG_ON((reason & __SI_MASK) != __SI_POLL);
                         if (reason - POLL_IN >= NSIGPOLL)
                                 si.si_band  = ~0L;
                         else
diff --git a/fs/freevxfs/vxfs_olt.c b/fs/freevxfs/vxfs_olt.c
index 76a0708ae97..04950084790 100644
--- a/fs/freevxfs/vxfs_olt.c
+++ b/fs/freevxfs/vxfs_olt.c
@@ -42,24 +42,21 @@
 static inline void
 vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp)
 {
-        if (infp->vsi_fshino)
-                BUG();
+        BUG_ON(infp->vsi_fshino);
         infp->vsi_fshino = fshp->olt_fsino[0];
 }
 
 static inline void
 vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp)
 {
-        if (infp->vsi_iext)
-                BUG();
+        BUG_ON(infp->vsi_iext);
         infp->vsi_iext = ilistp->olt_iext[0]; 
 }
 
 static inline u_long
 vxfs_oblock(struct super_block *sbp, daddr_t block, u_long bsize)
 {
-        if (sbp->s_blocksize % bsize)
-                BUG();
+        BUG_ON(sbp->s_blocksize % bsize);
         return (block * (sbp->s_blocksize / bsize));
 }
 
diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
index 8f07e8fbd03..746abc9ecf7 100644
--- a/fs/hfsplus/bnode.c
+++ b/fs/hfsplus/bnode.c
@@ -466,8 +466,7 @@ void hfs_bnode_unhash(struct hfs_bnode *node)
         for (p = &node->tree->node_hash[hfs_bnode_hash(node->this)];
              *p && *p != node; p = &(*p)->next_hash)
                 ;
-        if (!*p)
-                BUG();
+        BUG_ON(!*p);
         *p = node->next_hash;
         node->tree->node_hash_cnt--;
 }
@@ -622,8 +621,7 @@ void hfs_bnode_put(struct hfs_bnode *node)
 
                 dprint(DBG_BNODE_REFS, "put_node(%d:%d): %d\n",
                        node->tree->cnid, node->this, atomic_read(&node->refcnt));
-                if (!atomic_read(&node->refcnt))
-                        BUG();
+                BUG_ON(!atomic_read(&node->refcnt));
                 if (!atomic_dec_and_lock(&node->refcnt, &tree->hash_lock))
                         return;
                 for (i = 0; i < tree->pages_per_bnode; i++) {
diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c
index a67edfa34e9..effa8991999 100644
--- a/fs/hfsplus/btree.c
+++ b/fs/hfsplus/btree.c
@@ -269,8 +269,7 @@ void hfs_bmap_free(struct hfs_bnode *node)
         u8 *data, byte, m;
 
         dprint(DBG_BNODE_MOD, "btree_free_node: %u\n", node->this);
-        if (!node->this)
-                BUG();
+        BUG_ON(!node->this);
         tree = node->tree;
         nidx = node->this;
         node = hfs_bnode_find(tree, 0);
diff --git a/fs/inode.c b/fs/inode.c
index 32b7c337502..3a2446a27d2 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -172,8 +172,7 @@ static struct inode *alloc_inode(struct super_block *sb)
 
 void destroy_inode(struct inode *inode) 
 {
-        if (inode_has_buffers(inode))
-                BUG();
+        BUG_ON(inode_has_buffers(inode));
         security_inode_free(inode);
         if (inode->i_sb->s_op->destroy_inode)
                 inode->i_sb->s_op->destroy_inode(inode);
@@ -249,12 +248,9 @@ void clear_inode(struct inode *inode)
         might_sleep();
         invalidate_inode_buffers(inode);
        
-        if (inode->i_data.nrpages)
-                BUG();
-        if (!(inode->i_state & I_FREEING))
-                BUG();
-        if (inode->i_state & I_CLEAR)
-                BUG();
+        BUG_ON(inode->i_data.nrpages);
+        BUG_ON(!(inode->i_state & I_FREEING));
+        BUG_ON(inode->i_state & I_CLEAR);
         wait_on_inode(inode);
         DQUOT_DROP(inode);
         if (inode->i_sb && inode->i_sb->s_op->clear_inode)
@@ -1054,8 +1050,7 @@ void generic_delete_inode(struct inode *inode)
         hlist_del_init(&inode->i_hash);
         spin_unlock(&inode_lock);
         wake_up_inode(inode);
-        if (inode->i_state != I_CLEAR)
-                BUG();
+        BUG_ON(inode->i_state != I_CLEAR);
         destroy_inode(inode);
 }
 
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 7b77a954112..ff2a872e80e 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -35,8 +35,7 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
         pid_t pid;
         int ret = 0;
 
-        if (c->gc_task)
-                BUG();
+        BUG_ON(c->gc_task);
 
         init_completion(&c->gc_thread_start);
         init_completion(&c->gc_thread_exit);
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index c56bd99a970..ed9a24d19d7 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -178,11 +178,9 @@ smb_writepage(struct page *page, struct writeback_control *wbc)
         unsigned offset = PAGE_CACHE_SIZE;
         int err;
 
-        if (!mapping)
-                BUG();
+        BUG_ON(!mapping);
         inode = mapping->host;
-        if (!inode)
-                BUG();
+        BUG_ON(!inode);
 
         end_index = inode->i_size >> PAGE_CACHE_SHIFT;
 
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index f26880a4785..6cfdc9a8777 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -50,7 +50,7 @@ static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent * parent_sd,
         return sd;
 }
 
-/**
+/*
  *
  * Return -EEXIST if there is already a sysfs element with the same name for
  * the same parent.
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 4c29ac41ac3..f0b347bd12c 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -175,8 +175,7 @@ const unsigned char * sysfs_get_name(struct sysfs_dirent *sd)
         struct bin_attribute * bin_attr;
         struct sysfs_symlink  * sl;
 
-        if (!sd || !sd->s_element)
-                BUG();
+        BUG_ON(!sd || !sd->s_element);
 
         switch (sd->s_type) {
                 case SYSFS_DIR:
diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c
index 8c66e9270dd..d7074341ee8 100644
--- a/fs/sysv/dir.c
+++ b/fs/sysv/dir.c
@@ -253,8 +253,7 @@ int sysv_delete_entry(struct sysv_dir_entry *de, struct page *page)
 
         lock_page(page);
         err = mapping->a_ops->prepare_write(NULL, page, from, to);
-        if (err)
-                BUG();
+        BUG_ON(err);
         de->inode = 0;
         err = dir_commit_chunk(page, from, to);
         dir_put_page(page);
@@ -353,8 +352,7 @@ void sysv_set_link(struct sysv_dir_entry *de, struct page *page,
 
         lock_page(page);
         err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
-        if (err)
-                BUG();
+        BUG_ON(err);
         de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), inode->i_ino);
         err = dir_commit_chunk(page, from, to);
         dir_put_page(page);
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 81e0e8459af..2983afd5e7f 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -312,12 +312,10 @@ static int udf_get_block(struct inode *inode, sector_t block, struct buffer_head
         err = 0;
 
         bh = inode_getblk(inode, block, &err, &phys, &new);
-        if (bh)
-                BUG();
+        BUG_ON(bh);
         if (err)
                 goto abort;
-        if (!phys)
-                BUG();
+        BUG_ON(!phys);
 
         if (new)
                 set_buffer_new(bh_result);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 4ed7e602d70..1e9ebaba07b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -864,7 +864,7 @@ struct super_block {
          */
         struct mutex s_vfs_rename_mutex;        /* Kludge */
 
-        /* Granuality of c/m/atime in ns.
+        /* Granularity of c/m/atime in ns.
            Cannot be worse than a second */
         u32                s_time_gran;
 };
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index b2093928761..306acf1dc6d 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -80,7 +80,7 @@ struct hrtimer_sleeper {
  * @first:              pointer to the timer node which expires first
  * @resolution:         the resolution of the clock, in nanoseconds
  * @get_time:           function to retrieve the current time of the clock
- * @get_sofirq_time:    function to retrieve the current time from the softirq
+ * @get_softirq_time:   function to retrieve the current time from the softirq
  * @curr_timer:         the timer which is executing a callback right now
  * @softirq_time:       the time when running the hrtimer queue in the softirq
  */
diff --git a/ipc/shm.c b/ipc/shm.c
index f806a2e314e..6b0c9af5bbf 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -91,8 +91,8 @@ static inline int shm_addid(struct shmid_kernel *shp)
 static inline void shm_inc (int id) {
         struct shmid_kernel *shp;
 
-        if(!(shp = shm_lock(id)))
-                BUG();
+        shp = shm_lock(id);
+        BUG_ON(!shp);
         shp->shm_atim = get_seconds();
         shp->shm_lprid = current->tgid;
         shp->shm_nattch++;
@@ -142,8 +142,8 @@ static void shm_close (struct vm_area_struct *shmd)
 
         mutex_lock(&shm_ids.mutex);
         /* remove from the list of attaches of the shm segment */
-        if(!(shp = shm_lock(id)))
-                BUG();
+        shp = shm_lock(id);
+        BUG_ON(!shp);
         shp->shm_lprid = current->tgid;
         shp->shm_dtim = get_seconds();
         shp->shm_nattch--;
@@ -283,8 +283,7 @@ asmlinkage long sys_shmget (key_t key, size_t size, int shmflg)
                 err = -EEXIST;
         } else {
                 shp = shm_lock(id);
-                if(shp==NULL)
-                        BUG();
+                BUG_ON(shp==NULL);
                 if (shp->shm_segsz < size)
                         err = -EINVAL;
                 else if (ipcperms(&shp->shm_perm, shmflg))
@@ -774,8 +773,8 @@ invalid:
         up_write(&current->mm->mmap_sem);
 
         mutex_lock(&shm_ids.mutex);
-        if(!(shp = shm_lock(shmid)))
-                BUG();
+        shp = shm_lock(shmid);
+        BUG_ON(!shp);
         shp->shm_nattch--;
         if(shp->shm_nattch == 0 &&
            shp->shm_perm.mode & SHM_DEST)
diff --git a/ipc/util.c b/ipc/util.c
index 23151ef3259..5e785a29e1e 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -266,8 +266,7 @@ struct kern_ipc_perm* ipc_rmid(struct ipc_ids* ids, int id)
 {
         struct kern_ipc_perm* p;
         int lid = id % SEQ_MULTIPLIER;
-        if(lid >= ids->entries->size)
-                BUG();
+        BUG_ON(lid >= ids->entries->size);
 
         /* 
          * do not need a rcu_dereference()() here to force ordering
@@ -275,8 +274,7 @@ struct kern_ipc_perm* ipc_rmid(struct ipc_ids* ids, int id)
          */     
         p = ids->entries->p[lid];
         ids->entries->p[lid] = NULL;
-        if(p==NULL)
-                BUG();
+        BUG_ON(p==NULL);
         ids->in_use--;
 
         if (lid == ids->max_id) {
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 9fd8d4f0359..ce0dfb8f4a4 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -41,7 +41,7 @@ config SOFTWARE_SUSPEND
         depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP)
         ---help---
           Enable the possibility of suspending the machine.
-          It doesn't need APM.
+          It doesn't need ACPI or APM.
           You may suspend your machine by 'swsusp' or 'shutdown -z <time>' 
           (patch for sysvinit needed). 
 
diff --git a/kernel/printk.c b/kernel/printk.c
index 8cc19431e74..c056f332443 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -360,8 +360,7 @@ static void call_console_drivers(unsigned long start, unsigned long end)
         unsigned long cur_index, start_print;
         static int msg_level = -1;
 
-        if (((long)(start - end)) > 0)
-                BUG();
+        BUG_ON(((long)(start - end)) > 0);
 
         cur_index = start;
         start_print = start;
@@ -708,8 +707,7 @@ int __init add_preferred_console(char *name, int idx, char *options)
  */
 void acquire_console_sem(void)
 {
-        if (in_interrupt())
-                BUG();
+        BUG_ON(in_interrupt());
         down(&console_sem);
         console_locked = 1;
         console_may_schedule = 1;
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 86a7f6c60cb..0eeb7e66722 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -30,8 +30,7 @@
  */
 void __ptrace_link(task_t *child, task_t *new_parent)
 {
-        if (!list_empty(&child->ptrace_list))
-                BUG();
+        BUG_ON(!list_empty(&child->ptrace_list));
         if (child->parent == new_parent)
                 return;
         list_add(&child->ptrace_list, &child->parent->ptrace_children);
diff --git a/kernel/signal.c b/kernel/signal.c
index 92025b10879..5ccaac505e8 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -769,8 +769,7 @@ specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
 {
         int ret = 0;
 
-        if (!irqs_disabled())
-                BUG();
+        BUG_ON(!irqs_disabled());
         assert_spin_locked(&t->sighand->siglock);
 
         /* Short-circuit ignored signals.  */
@@ -1384,8 +1383,7 @@ send_group_sigqueue(int sig, struct sigqueue *q, struct task_struct *p)
                  * the overrun count.  Other uses should not try to
                  * send the signal multiple times.
                  */
-                if (q->info.si_code != SI_TIMER)
-                        BUG();
+                BUG_ON(q->info.si_code != SI_TIMER);
                 q->info.si_overrun++;
                 goto out;
         } 
diff --git a/kernel/time.c b/kernel/time.c
index ff8e7019c4c..b00ddc71ced 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -410,7 +410,7 @@ EXPORT_SYMBOL(current_kernel_time);
  * current_fs_time - Return FS time
  * @sb: Superblock.
  *
- * Return the current time truncated to the time granuality supported by
+ * Return the current time truncated to the time granularity supported by
  * the fs.
  */
 struct timespec current_fs_time(struct super_block *sb)
@@ -421,11 +421,11 @@ struct timespec current_fs_time(struct super_block *sb)
 EXPORT_SYMBOL(current_fs_time);
 
 /**
- * timespec_trunc - Truncate timespec to a granuality
+ * timespec_trunc - Truncate timespec to a granularity
  * @t: Timespec
- * @gran: Granuality in ns.
+ * @gran: Granularity in ns.
  *
- * Truncate a timespec to a granuality. gran must be smaller than a second.
+ * Truncate a timespec to a granularity. gran must be smaller than a second.
  * Always rounds down.
  *
  * This function should be only used for timestamps returned by
diff --git a/kernel/timer.c b/kernel/timer.c
index 6b812c04737..c3a874f1393 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1479,8 +1479,7 @@ register_time_interpolator(struct time_interpolator *ti)
         unsigned long flags;
 
         /* Sanity check */
-        if (ti->frequency == 0 || ti->mask == 0)
-                BUG();
+        BUG_ON(ti->frequency == 0 || ti->mask == 0);
 
         ti->nsec_per_cyc = ((u64)NSEC_PER_SEC << ti->shift) / ti->frequency;
         spin_lock(&time_interpolator_lock);
diff --git a/mm/highmem.c b/mm/highmem.c
index 55885f64af4..9b274fdf9d0 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -74,8 +74,7 @@ static void flush_all_zero_pkmaps(void)
                 pkmap_count[i] = 0;
 
                 /* sanity check */
-                if (pte_none(pkmap_page_table[i]))
-                        BUG();
+                BUG_ON(pte_none(pkmap_page_table[i]));
 
                 /*
                  * Don't need an atomic fetch-and-clear op here;
@@ -158,8 +157,7 @@ void fastcall *kmap_high(struct page *page)
         if (!vaddr)
                 vaddr = map_new_virtual(page);
         pkmap_count[PKMAP_NR(vaddr)]++;
-        if (pkmap_count[PKMAP_NR(vaddr)] < 2)
-                BUG();
+        BUG_ON(pkmap_count[PKMAP_NR(vaddr)] < 2);
         spin_unlock(&kmap_lock);
         return (void*) vaddr;
 }
@@ -174,8 +172,7 @@ void fastcall kunmap_high(struct page *page)
 
         spin_lock(&kmap_lock);
         vaddr = (unsigned long)page_address(page);
-        if (!vaddr)
-                BUG();
+        BUG_ON(!vaddr);
         nr = PKMAP_NR(vaddr);
 
         /*
@@ -220,8 +217,7 @@ static __init int init_emergency_pool(void)
                 return 0;
 
         page_pool = mempool_create_page_pool(POOL_SIZE, 0);
-        if (!page_pool)
-                BUG();
+        BUG_ON(!page_pool);
         printk("highmem bounce pool size: %d pages\n", POOL_SIZE);
 
         return 0;
@@ -264,8 +260,7 @@ int init_emergency_isa_pool(void)
 
         isa_page_pool = mempool_create(ISA_POOL_SIZE, mempool_alloc_pages_isa,
                                        mempool_free_pages, (void *) 0);
-        if (!isa_page_pool)
-                BUG();
+        BUG_ON(!isa_page_pool);
 
         printk("isa bounce pool size: %d pages\n", ISA_POOL_SIZE);
         return 0;
diff --git a/mm/mmap.c b/mm/mmap.c
index 4f5b5709136..e780d19aa21 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -294,8 +294,7 @@ void validate_mm(struct mm_struct *mm)
         i = browse_rb(&mm->mm_rb);
         if (i != mm->map_count)
                 printk("map_count %d rb %d\n", mm->map_count, i), bug = 1;
-        if (bug)
-                BUG();
+        BUG_ON(bug);
 }
 #else
 #define validate_mm(mm) do { } while (0)
@@ -432,8 +431,7 @@ __insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
         struct rb_node ** rb_link, * rb_parent;
 
         __vma = find_vma_prepare(mm, vma->vm_start,&prev, &rb_link, &rb_parent);
-        if (__vma && __vma->vm_start < vma->vm_end)
-                BUG();
+        BUG_ON(__vma && __vma->vm_start < vma->vm_end);
         __vma_link(mm, vma, prev, rb_link, rb_parent);
         mm->map_count++;
 }
@@ -813,8 +811,7 @@ try_prev:
          * (e.g. stash info in next's anon_vma_node when assigning
          * an anon_vma, or when trying vma_merge).  Another time.
          */
-        if (find_vma_prev(vma->vm_mm, vma->vm_start, &near) != vma)
-                BUG();
+        BUG_ON(find_vma_prev(vma->vm_mm, vma->vm_start, &near) != vma);
         if (!near)
                 goto none;
 
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 893d7677579..6dcce3a4bbd 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -258,7 +258,7 @@ static void balance_dirty_pages(struct address_space *mapping)
 /**
  * balance_dirty_pages_ratelimited_nr - balance dirty memory state
  * @mapping: address_space which was dirtied
- * @nr_pages: number of pages which the caller has just dirtied
+ * @nr_pages_dirtied: number of pages which the caller has just dirtied
  *
  * Processes which are dirtying memory should call in here once for each page
  * which was newly dirtied.  The function will periodically check the system's
diff --git a/mm/slab.c b/mm/slab.c
index 4cbf8bb1355..f055c142021 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1297,8 +1297,7 @@ void __init kmem_cache_init(void)
                 if (cache_cache.num)
                         break;
         }
-        if (!cache_cache.num)
-                BUG();
+        BUG_ON(!cache_cache.num);
         cache_cache.gfporder = order;
         cache_cache.colour = left_over / cache_cache.colour_off;
         cache_cache.slab_size = ALIGN(cache_cache.num * sizeof(kmem_bufctl_t) +
@@ -1974,8 +1973,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
          * Always checks flags, a caller might be expecting debug support which
          * isn't available.
          */
-        if (flags & ~CREATE_MASK)
-                BUG();
+        BUG_ON(flags & ~CREATE_MASK);
 
         /*
          * Check that size is in terms of words.  This is needed to avoid
@@ -2206,8 +2204,7 @@ static int __node_shrink(struct kmem_cache *cachep, int node)
 
                 slabp = list_entry(l3->slabs_free.prev, struct slab, list);
 #if DEBUG
-                if (slabp->inuse)
-                        BUG();
+                BUG_ON(slabp->inuse);
 #endif
                 list_del(&slabp->list);
 
@@ -2248,8 +2245,7 @@ static int __cache_shrink(struct kmem_cache *cachep)
  */
 int kmem_cache_shrink(struct kmem_cache *cachep)
 {
-        if (!cachep || in_interrupt())
-                BUG();
+        BUG_ON(!cachep || in_interrupt());
 
         return __cache_shrink(cachep);
 }
@@ -2277,8 +2273,7 @@ int kmem_cache_destroy(struct kmem_cache *cachep)
         int i;
         struct kmem_list3 *l3;
 
-        if (!cachep || in_interrupt())
-                BUG();
+        BUG_ON(!cachep || in_interrupt());
 
         /* Don't let CPUs to come and go */
         lock_cpu_hotplug();
@@ -2477,8 +2472,7 @@ static int cache_grow(struct kmem_cache *cachep, gfp_t flags, int nodeid)
          * Be lazy and only check for valid flags here,  keeping it out of the
          * critical path in kmem_cache_alloc().
          */
-        if (flags & ~(SLAB_DMA | SLAB_LEVEL_MASK | SLAB_NO_GROW))
-                BUG();
+        BUG_ON(flags & ~(SLAB_DMA | SLAB_LEVEL_MASK | SLAB_NO_GROW));
         if (flags & SLAB_NO_GROW)
                 return 0;
 
diff --git a/mm/swap_state.c b/mm/swap_state.c
index d7af296833f..e0e1583f32c 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -148,8 +148,7 @@ int add_to_swap(struct page * page, gfp_t gfp_mask)
         swp_entry_t entry;
         int err;
 
-        if (!PageLocked(page))
-                BUG();
+        BUG_ON(!PageLocked(page));
 
         for (;;) {
                 entry = get_swap_page();
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 729eb3eec75..c0504f1e34e 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -321,8 +321,7 @@ void __vunmap(void *addr, int deallocate_pages)
                 int i;
 
                 for (i = 0; i < area->nr_pages; i++) {
-                        if (unlikely(!area->pages[i]))
-                                BUG();
+                        BUG_ON(!area->pages[i]);
                         __free_page(area->pages[i]);
                 }