Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits)
  vlynq: make whole Kconfig-menu dependant on architecture
  add descriptive comment for TIF_MEMDIE task flag declaration.
  EEPROM: max6875: Header file cleanup
  EEPROM: 93cx6: Header file cleanup
  EEPROM: Header file cleanup
  agp: use NULL instead of 0 when pointer is needed
  rtc-v3020: make bitfield unsigned
  PCI: make bitfield unsigned
  jbd2: use NULL instead of 0 when pointer is needed
  cciss: fix shadows sparse warning
  doc: inode uses a mutex instead of a semaphore.
  uml: i386: Avoid redefinition of NR_syscalls
  fix "seperate" typos in comments
  cocbalt_lcdfb: correct sections
  doc: Change urls for sparse
  Powerpc: wii: Fix typo in comment
  i2o: cleanup some exit paths
  Documentation/: it's -> its where appropriate
  UML: Fix compiler warning due to missing task_struct declaration
  UML: add kernel.h include to signal.c
  ...

36 files changed, 40 insertions, 42 deletions

diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h
index b3e888638bb7..6f32f9c84a2d 100644
--- a/arch/alpha/include/asm/thread_info.h
+++ b/arch/alpha/include/asm/thread_info.h
@@ -77,7 +77,7 @@ register struct thread_info *__current_thread_info __asm__("$8");
 #define TIF_UAC_NOPRINT         10      /* see sysinfo.h */
 #define TIF_UAC_NOFIX           11
 #define TIF_UAC_SIGBUS          12
-#define TIF_MEMDIE              13
+#define TIF_MEMDIE              13      /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     14      /* restore signal mask in do_signal */
 #define TIF_FREEZE              16      /* is freezing for suspend */
 
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index b74970ec02c4..763e29fa8530 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -141,7 +141,7 @@ extern void vfp_flush_hwstate(struct thread_info *);
 #define TIF_SYSCALL_TRACE       8
 #define TIF_POLLING_NRFLAG      16
 #define TIF_USING_IWMMXT        17
-#define TIF_MEMDIE              18
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_FREEZE              19
 #define TIF_RESTORE_SIGMASK     20
 
diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c
index 83b1aa63d778..0c3c0c884cd3 100644
--- a/arch/arm/mach-s3c2443/clock.c
+++ b/arch/arm/mach-s3c2443/clock.c
@@ -241,7 +241,7 @@ static struct clk clk_hsmmc = {
 
 /* i2s_eplldiv
  *
- * This clock is the output from the I2S divisor of ESYSCLK, and is seperate
+ * This clock is the output from the I2S divisor of ESYSCLK, and is separate
  * from the mux that comes after it (cannot merge into one single clock)
 */
 
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
index f3a68d1a07b9..e358c7da8480 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-core.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
@@ -107,7 +107,7 @@ extern void s3c_gpiolib_add(struct s3c_gpio_chip *chip);
  * others = Special functions (dependant on bank)
  *
  * Note, since the code to deal with the case where there are two control
- * registers instead of one, we do not have a seperate set of function
+ * registers instead of one, we do not have a separate set of function
  * (samsung_gpiolib_add_4bit2_chips)for each case.
  */
 extern void samsung_gpiolib_add_4bit_chips(struct s3c_gpio_chip *chip,
diff --git a/arch/avr32/include/asm/thread_info.h b/arch/avr32/include/asm/thread_info.h
index fd0c5d7e9337..7a9c03dcb0b6 100644
--- a/arch/avr32/include/asm/thread_info.h
+++ b/arch/avr32/include/asm/thread_info.h
@@ -81,7 +81,7 @@ static inline struct thread_info *current_thread_info(void)
                                            TIF_NEED_RESCHED */
 #define TIF_BREAKPOINT          4       /* enter monitor mode on return */
 #define TIF_SINGLE_STEP         5       /* single step in progress */
-#define TIF_MEMDIE              6
+#define TIF_MEMDIE              6       /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     7       /* restore signal mask in do_signal */
 #define TIF_CPU_GOING_TO_SLEEP  8       /* CPU is entering sleep 0 mode */
 #define TIF_NOTIFY_RESUME       9       /* callback before returning to user */
diff --git a/arch/blackfin/include/asm/thread_info.h b/arch/blackfin/include/asm/thread_info.h
index e9a5614cdbb1..02560fd8a121 100644
--- a/arch/blackfin/include/asm/thread_info.h
+++ b/arch/blackfin/include/asm/thread_info.h
@@ -98,7 +98,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
                                            TIF_NEED_RESCHED */
-#define TIF_MEMDIE              4
+#define TIF_MEMDIE              4       /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     5       /* restore signal mask in do_signal() */
 #define TIF_FREEZE              6       /* is freezing for suspend */
 #define TIF_IRQ_SYNC            7       /* sync pipeline stage */
diff --git a/arch/cris/include/asm/thread_info.h b/arch/cris/include/asm/thread_info.h
index c3aade36c330..91776069ca80 100644
--- a/arch/cris/include/asm/thread_info.h
+++ b/arch/cris/include/asm/thread_info.h
@@ -85,7 +85,7 @@ struct thread_info {
 #define TIF_NEED_RESCHED        3       /* rescheduling necessary */
 #define TIF_RESTORE_SIGMASK     9       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              17
+#define TIF_MEMDIE              17      /* is terminating due to OOM killer */
 #define TIF_FREEZE              18      /* is freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
diff --git a/arch/frv/include/asm/thread_info.h b/arch/frv/include/asm/thread_info.h
index e608e056bb53..11f33ead29bf 100644
--- a/arch/frv/include/asm/thread_info.h
+++ b/arch/frv/include/asm/thread_info.h
@@ -113,7 +113,7 @@ register struct thread_info *__current_thread_info asm("gr15");
 #define TIF_SINGLESTEP          4       /* restore singlestep on return to user mode */
 #define TIF_RESTORE_SIGMASK     5       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              17      /* OOM killer killed process */
+#define TIF_MEMDIE              17      /* is terminating due to OOM killer */
 #define TIF_FREEZE              18      /* freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
diff --git a/arch/h8300/include/asm/thread_info.h b/arch/h8300/include/asm/thread_info.h
index 70e67e47d020..d6f1784bfdee 100644
--- a/arch/h8300/include/asm/thread_info.h
+++ b/arch/h8300/include/asm/thread_info.h
@@ -87,7 +87,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
                                            TIF_NEED_RESCHED */
-#define TIF_MEMDIE              4
+#define TIF_MEMDIE              4       /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     5       /* restore signal mask in do_signal() */
 #define TIF_NOTIFY_RESUME       6       /* callback before returning to user */
 #define TIF_FREEZE              16      /* is freezing for suspend */
diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h
index 8ce2e388e37c..b6a5ba2aca34 100644
--- a/arch/ia64/include/asm/thread_info.h
+++ b/arch/ia64/include/asm/thread_info.h
@@ -102,7 +102,7 @@ struct thread_info {
 #define TIF_SINGLESTEP          4       /* restore singlestep on return to user mode */
 #define TIF_NOTIFY_RESUME       6       /* resumption notification requested */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              17
+#define TIF_MEMDIE              17      /* is terminating due to OOM killer */
 #define TIF_MCA_INIT            18      /* this task is processing MCA or INIT */
 #define TIF_DB_DISABLED         19      /* debug trap disabled for fsyscall */
 #define TIF_FREEZE              20      /* is freezing for suspend */
diff --git a/arch/m32r/include/asm/thread_info.h b/arch/m32r/include/asm/thread_info.h
index ed240b6e8e77..71faff5bcc27 100644
--- a/arch/m32r/include/asm/thread_info.h
+++ b/arch/m32r/include/asm/thread_info.h
@@ -142,7 +142,7 @@ static inline unsigned int get_thread_fault_code(void)
 #define TIF_RESTORE_SIGMASK     8       /* restore signal mask in do_signal() */
 #define TIF_USEDFPU             16      /* FPU was used by this task this quantum (SMP) */
 #define TIF_POLLING_NRFLAG      17      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              18      /* OOM killer killed process */
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_FREEZE              19      /* is freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
diff --git a/arch/m68k/include/asm/thread_info_mm.h b/arch/m68k/include/asm/thread_info_mm.h
index 67266c683453..3bf31dc51b12 100644
--- a/arch/m68k/include/asm/thread_info_mm.h
+++ b/arch/m68k/include/asm/thread_info_mm.h
@@ -65,7 +65,7 @@ struct thread_info {
 #define TIF_NEED_RESCHED        7       /* rescheduling necessary */
 #define TIF_DELAYED_TRACE       14      /* single step a syscall */
 #define TIF_SYSCALL_TRACE       15      /* syscall trace active */
-#define TIF_MEMDIE              16
+#define TIF_MEMDIE              16      /* is terminating due to OOM killer */
 #define TIF_FREEZE              17      /* thread is freezing for suspend */
 
 #endif  /* _ASM_M68K_THREAD_INFO_H */
diff --git a/arch/m68k/include/asm/thread_info_no.h b/arch/m68k/include/asm/thread_info_no.h
index 884776f686ca..51f354b672e6 100644
--- a/arch/m68k/include/asm/thread_info_no.h
+++ b/arch/m68k/include/asm/thread_info_no.h
@@ -85,7 +85,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
                                            TIF_NEED_RESCHED */
-#define TIF_MEMDIE              4
+#define TIF_MEMDIE              4       /* is terminating due to OOM killer */
 #define TIF_FREEZE              16      /* is freezing for suspend */
 
 /* as above, but as bit values */
diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
index b2ca80f64640..8a8e9fc6e0c0 100644
--- a/arch/microblaze/include/asm/thread_info.h
+++ b/arch/microblaze/include/asm/thread_info.h
@@ -122,7 +122,7 @@ static inline struct thread_info *current_thread_info(void)
 /* restore singlestep on return to user mode */
 #define TIF_SINGLESTEP          4
 #define TIF_IRET                5 /* return with iret */
-#define TIF_MEMDIE              6
+#define TIF_MEMDIE              6       /* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT       9       /* syscall auditing active */
 #define TIF_SECCOMP             10      /* secure computing */
 #define TIF_FREEZE              14      /* Freezing for suspend */
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index 845da2107ed1..2376f2e06e47 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -112,7 +112,7 @@ register struct thread_info *__current_thread_info __asm__("$28");
 #define TIF_RESTORE_SIGMASK     9       /* restore signal mask in do_signal() */
 #define TIF_USEDFPU             16      /* FPU was used by this task this quantum (SMP) */
 #define TIF_POLLING_NRFLAG      17      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              18
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_FREEZE              19
 #define TIF_FIXADE              20      /* Fix address errors in software */
 #define TIF_LOGADE              21      /* Log address errors to syslog */
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 7a8b0a8b643a..044bbe462c2c 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -253,7 +253,7 @@ void __init init_bcm1480_irqs(void)
  * On the second cpu, everything is set to IP5, which is
  * ignored, EXCEPT the mailbox interrupt.  That one is
  * set to IP[2] so it is handled.  This is needed so we
- * can do cross-cpu function calls, as requred by SMP
+ * can do cross-cpu function calls, as required by SMP
  */
 
 #define IMR_IP2_VAL     K_BCM1480_INT_MAP_I0
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index 62371f772553..12ac04a658ee 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -236,7 +236,7 @@ void __init init_sb1250_irqs(void)
  * On the second cpu, everything is set to IP5, which is
  * ignored, EXCEPT the mailbox interrupt.  That one is
  * set to IP[2] so it is handled.  This is needed so we
- * can do cross-cpu function calls, as requred by SMP
+ * can do cross-cpu function calls, as required by SMP
  */
 
 #define IMR_IP2_VAL     K_INT_MAP_I0
diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h
index 58d64f8b2cc3..2001cb657a95 100644
--- a/arch/mn10300/include/asm/thread_info.h
+++ b/arch/mn10300/include/asm/thread_info.h
@@ -148,7 +148,7 @@ static inline unsigned long current_stack_pointer(void)
 #define TIF_SINGLESTEP          4       /* restore singlestep on return to user mode */
 #define TIF_RESTORE_SIGMASK     5       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              17      /* OOM killer killed process */
+#define TIF_MEMDIE              17      /* is terminating due to OOM killer */
 #define TIF_FREEZE              18      /* freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE      +(1 << TIF_SYSCALL_TRACE)
diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h
index 7ecc1039cfed..aa8de727e90b 100644
--- a/arch/parisc/include/asm/thread_info.h
+++ b/arch/parisc/include/asm/thread_info.h
@@ -56,7 +56,7 @@ struct thread_info {
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_32BIT               4       /* 32 bit binary */
-#define TIF_MEMDIE              5
+#define TIF_MEMDIE              5       /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     6       /* restore saved signal mask */
 #define TIF_FREEZE              7       /* is freezing for suspend */
 #define TIF_NOTIFY_RESUME       8       /* callback before returning to user */
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index aa9d383a1c09..65eb85976a03 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -104,7 +104,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_PERFMON_CTXSW       6       /* perfmon needs ctxsw calls */
 #define TIF_SYSCALL_AUDIT       7       /* syscall auditing active */
 #define TIF_SINGLESTEP          8       /* singlestepping active */
-#define TIF_MEMDIE              9
+#define TIF_MEMDIE              9       /* is terminating due to OOM killer */
 #define TIF_SECCOMP             10      /* secure computing */
 #define TIF_RESTOREALL          11      /* Restore all regs (implies NOERROR) */
 #define TIF_NOERROR             12      /* Force successful syscall return */
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index 57e5b608fa1a..174a04ac4806 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -69,10 +69,10 @@ void __init wii_memory_fixups(void)
 
         /*
          * This is part of a workaround to allow the use of two
-         * discontiguous RAM ranges on the Wii, even if this is
+         * discontinuous RAM ranges on the Wii, even if this is
          * currently unsupported on 32-bit PowerPC Linux.
          *
-         * We coealesce the two memory ranges of the Wii into a
+         * We coalesce the two memory ranges of the Wii into a
          * single range, then create a reservation for the "hole"
          * between both ranges.
          */
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index be3d3f91d86c..5baf0230b29b 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -97,7 +97,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling
                                            TIF_NEED_RESCHED */
 #define TIF_31BIT               17      /* 32bit process */
-#define TIF_MEMDIE              18
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     19      /* restore signal mask in do_signal() */
 #define TIF_FREEZE              20      /* thread is freezing for suspend */
 
diff --git a/arch/score/include/asm/thread_info.h b/arch/score/include/asm/thread_info.h
index 55939992c27d..8570d08f58c1 100644
--- a/arch/score/include/asm/thread_info.h
+++ b/arch/score/include/asm/thread_info.h
@@ -92,7 +92,7 @@ register struct thread_info *__current_thread_info __asm__("r28");
 #define TIF_RESTORE_SIGMASK     9       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      17      /* true if poll_idle() is polling
                                                  TIF_NEED_RESCHED */
-#define TIF_MEMDIE              18
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
 #define _TIF_SIGPENDING         (1<<TIF_SIGPENDING)
diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h
index 55a36fef6875..c228946926ed 100644
--- a/arch/sh/include/asm/thread_info.h
+++ b/arch/sh/include/asm/thread_info.h
@@ -121,7 +121,7 @@ extern void init_thread_xstate(void);
 #define TIF_NOTIFY_RESUME       7       /* callback before returning to user */
 #define TIF_SYSCALL_TRACEPOINT  8       /* for ftrace syscall instrumentation */
 #define TIF_POLLING_NRFLAG      17      /* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE              18
+#define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_FREEZE              19      /* Freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index 844d73a0340c..9dd0318d3ddf 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -132,7 +132,7 @@ BTFIXUPDEF_CALL(void, free_thread_info, struct thread_info *)
                                          * this quantum (SMP) */
 #define TIF_POLLING_NRFLAG      9       /* true if poll_idle() is polling
                                          * TIF_NEED_RESCHED */
-#define TIF_MEMDIE              10
+#define TIF_MEMDIE              10      /* is terminating due to OOM killer */
 #define TIF_FREEZE              11      /* is freezing for suspend */
 
 /* as above, but as bit values */
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index 4827a3aeac7f..fb2ea7705a46 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -223,7 +223,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
  *       an immediate value in instructions such as andcc.
  */
 /* flag bit 12 is available */
-#define TIF_MEMDIE              13
+#define TIF_MEMDIE              13      /* is terminating due to OOM killer */
 #define TIF_POLLING_NRFLAG      14
 #define TIF_FREEZE              15      /* is freezing for suspend */
 
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 7a656bd8bd3c..7f7338c90784 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -19,7 +19,6 @@ static irqreturn_t line_interrupt(int irq, void *data)
 {
         struct chan *chan = data;
         struct line *line = chan->line;
-        struct tty_struct *tty;
 
         if (line)
                 chan_interrupt(&line->chan_list, &line->task, line->tty, irq);
diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h
index 753346e2cdfd..93af1cf0907d 100644
--- a/arch/um/include/asm/system.h
+++ b/arch/um/include/asm/system.h
@@ -3,11 +3,8 @@
 
 #include "sysdep/system.h"
 
-extern void *switch_to(void *prev, void *next, void *last);
-
 extern int get_signals(void);
 extern int set_signals(int enable);
-extern int get_signals(void);
 extern void block_signals(void);
 extern void unblock_signals(void);
 
diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h
index fd911f855367..e2cf786bda0a 100644
--- a/arch/um/include/asm/thread_info.h
+++ b/arch/um/include/asm/thread_info.h
@@ -63,10 +63,9 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SIGPENDING          1       /* signal pending */
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
-                                         * TIF_NEED_RESCHED
-                                         */
-#define TIF_RESTART_BLOCK       4
-#define TIF_MEMDIE              5
+                                         * TIF_NEED_RESCHED */
+#define TIF_RESTART_BLOCK       4
+#define TIF_MEMDIE              5       /* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT       6
 #define TIF_RESTORE_SIGMASK     7
 #define TIF_FREEZE              16      /* is freezing for suspend */
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index 4e3b820bd2be..f5173e1ec3ac 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -10,7 +10,7 @@
 #include "sysdep/syscalls.h"
 
 extern int syscall_table_size;
-#define NR_syscalls (syscall_table_size / sizeof(void *))
+#define NR_SYSCALLS (syscall_table_size / sizeof(void *))
 
 void handle_syscall(struct uml_pt_regs *r)
 {
@@ -30,7 +30,7 @@ void handle_syscall(struct uml_pt_regs *r)
          * in case it's a compiler bug.
          */
         syscall = UPT_SYSCALL_NR(r);
-        if ((syscall >= NR_syscalls) || (syscall < 0))
+        if ((syscall >= NR_SYSCALLS) || (syscall < 0))
                 result = -ENOSYS;
         else result = EXECUTE_SYSCALL(syscall, regs);
 
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
index e64cd41d7bab..a979a22a8d9f 100644
--- a/arch/um/sys-i386/asm/elf.h
+++ b/arch/um/sys-i386/asm/elf.h
@@ -75,6 +75,8 @@ typedef struct user_i387_struct elf_fpregset_t;
         pr_reg[16] = PT_REGS_SS(regs);          \
 } while (0);
 
+struct task_struct;
+
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
 
 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
index 49655c83efd2..d760967f33a7 100644
--- a/arch/um/sys-x86_64/asm/elf.h
+++ b/arch/um/sys-x86_64/asm/elf.h
@@ -95,6 +95,8 @@ typedef struct user_i387_struct elf_fpregset_t;
         (pr_reg)[25] = 0;                                       \
         (pr_reg)[26] = 0;
 
+struct task_struct;
+
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
 
 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index 1a899a7ed7a6..b6b65c7c7a7d 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -6,6 +6,7 @@
 
 #include <linux/personality.h>
 #include <linux/ptrace.h>
+#include <linux/kernel.h>
 #include <asm/unistd.h>
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>
@@ -165,8 +166,6 @@ struct rt_sigframe
         struct _fpstate fpstate;
 };
 
-#define round_down(m, n) (((m) / (n)) * (n))
-
 int setup_signal_stack_si(unsigned long stack_top, int sig,
                           struct k_sigaction *ka, struct pt_regs * regs,
                           siginfo_t *info, sigset_t *set)
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 0ec6d12d84e6..0797e748d280 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -105,7 +105,7 @@ do {							\
 
 /*
  * Generate a percpu add to memory instruction and optimize code
- * if a one is added or subtracted.
+ * if one is added or subtracted.
  */
 #define percpu_add_op(var, val)                                         \
 do {                                                                    \
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index d4092fac226b..62ba9400cc43 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -87,7 +87,7 @@ struct thread_info {
 #define TIF_NOTSC               16      /* TSC is not accessible in userland */
 #define TIF_IA32                17      /* 32bit process */
 #define TIF_FORK                18      /* ret_from_fork */
-#define TIF_MEMDIE              20
+#define TIF_MEMDIE              20      /* is terminating due to OOM killer */
 #define TIF_DEBUG               21      /* uses debug registers */
 #define TIF_IO_BITMAP           22      /* uses I/O bitmap */
 #define TIF_FREEZE              23      /* is freezing for suspend */
diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h
index 13165641cc51..7be8accb0b0c 100644
--- a/arch/xtensa/include/asm/thread_info.h
+++ b/arch/xtensa/include/asm/thread_info.h
@@ -129,7 +129,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
 #define TIF_SINGLESTEP          3       /* restore singlestep on return to user mode */
 #define TIF_IRET                4       /* return with iret */
-#define TIF_MEMDIE              5
+#define TIF_MEMDIE              5       /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     6       /* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_FREEZE              17      /* is freezing for suspend */