Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300

* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: (44 commits)
  MN10300: Save frame pointer in thread_info struct rather than global var
  MN10300: Change "Matsushita" to "Panasonic".
  MN10300: Create a defconfig for the ASB2364 board
  MN10300: Update the ASB2303 defconfig
  MN10300: ASB2364: Add support for SMSC911X and SMC911X
  MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA
  MN10300: Generic time support
  MN10300: Specify an ELF HWCAP flag for MN10300 Atomic Operations Unit support
  MN10300: Map userspace atomic op regs as a vmalloc page
  MN10300: And Panasonic AM34 subarch and implement SMP
  MN10300: Delete idle_timestamp from irq_cpustat_t
  MN10300: Make various interrupt priority settings configurable
  MN10300: Optimise do_csum()
  MN10300: Implement atomic ops using atomic ops unit
  MN10300: Make the FPU operate in non-lazy mode under SMP
  MN10300: SMP TLB flushing
  MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control
  MN10300: Make the use of PIDR to mark TLB entries controllable
  MN10300: Rename __flush_tlb*() to local_flush_tlb*()
  MN10300: AM34 erratum requires MMUCTR read and write on exception entry
  ...

3 files changed, 28 insertions, 33 deletions

diff --git a/arch/mn10300/lib/bitops.c b/arch/mn10300/lib/bitops.c
index 440a7dcbf87b..a66c6cdaf442 100644
--- a/arch/mn10300/lib/bitops.c
+++ b/arch/mn10300/lib/bitops.c
@@ -15,7 +15,7 @@
 /*
  * try flipping a bit using BSET and BCLR
  */
-void change_bit(int nr, volatile void *addr)
+void change_bit(unsigned long nr, volatile void *addr)
 {
         if (test_bit(nr, addr))
                 goto try_clear_bit;
@@ -34,7 +34,7 @@ try_clear_bit:
 /*
  * try flipping a bit using BSET and BCLR and returning the old value
  */
-int test_and_change_bit(int nr, volatile void *addr)
+int test_and_change_bit(unsigned long nr, volatile void *addr)
 {
         if (test_bit(nr, addr))
                 goto try_clear_bit;
diff --git a/arch/mn10300/lib/delay.c b/arch/mn10300/lib/delay.c
index fdf6f710f94e..8e7ceb8ba33d 100644
--- a/arch/mn10300/lib/delay.c
+++ b/arch/mn10300/lib/delay.c
@@ -38,14 +38,14 @@ EXPORT_SYMBOL(__delay);
  */
 void __udelay(unsigned long usecs)
 {
-        signed long ioclk, stop;
+        unsigned long start, stop, cnt;
 
         /* usecs * CLK / 1E6 */
         stop = __muldiv64u(usecs, MN10300_TSCCLK, 1000000);
-        stop = TMTSCBC - stop;
+        start = TMTSCBC;
 
         do {
-                ioclk = TMTSCBC;
-        } while (stop < ioclk);
+                cnt = start - TMTSCBC;
+        } while (cnt < stop);
 }
 EXPORT_SYMBOL(__udelay);
diff --git a/arch/mn10300/lib/do_csum.S b/arch/mn10300/lib/do_csum.S
index e138994e1667..1d27bba0cd8f 100644
--- a/arch/mn10300/lib/do_csum.S
+++ b/arch/mn10300/lib/do_csum.S
@@ -10,26 +10,25 @@
  */
 #include <asm/cache.h>
 
-        .section .text
-        .balign L1_CACHE_BYTES
+        .section .text
+        .balign L1_CACHE_BYTES
 
 ###############################################################################
 #
-# unsigned int do_csum(const unsigned char *buff, size_t len)
+# unsigned int do_csum(const unsigned char *buff, int len)
 #
 ###############################################################################
         .globl  do_csum
-        .type   do_csum,@function
+        .type   do_csum,@function
 do_csum:
         movm    [d2,d3],(sp)
-        mov     d0,(12,sp)
-        mov     d1,(16,sp)
         mov     d1,d2                           # count
         mov     d0,a0                           # buff
+        mov     a0,a1
         clr     d1                              # accumulator
 
         cmp     +0,d2
-        beq     do_csum_done                    # return if zero-length buffer
+        ble     do_csum_done                    # check for zero length or negative
 
         # 4-byte align the buffer pointer
         btst    +3,a0
@@ -41,17 +40,15 @@ do_csum:
         inc     a0
         asl     +8,d0
         add     d0,d1
-        addc    +0,d1
         add     -1,d2
-do_csum_addr_not_odd:
 
+do_csum_addr_not_odd:
         cmp     +2,d2
         bcs     do_csum_fewer_than_4
         btst    +2,a0
         beq     do_csum_now_4b_aligned
         movhu   (a0+),d0
         add     d0,d1
-        addc    +0,d1
         add     -2,d2
         cmp     +4,d2
         bcs     do_csum_fewer_than_4
@@ -66,20 +63,20 @@ do_csum_now_4b_aligned:
 
 do_csum_loop:
         mov     (a0+),d0
-        add     d0,d1
         mov     (a0+),e0
-        addc    e0,d1
         mov     (a0+),e1
-        addc    e1,d1
         mov     (a0+),e3
+        add     d0,d1
+        addc    e0,d1
+        addc    e1,d1
         addc    e3,d1
         mov     (a0+),d0
-        addc    d0,d1
         mov     (a0+),e0
-        addc    e0,d1
         mov     (a0+),e1
-        addc    e1,d1
         mov     (a0+),e3
+        addc    d0,d1
+        addc    e0,d1
+        addc    e1,d1
         addc    e3,d1
         addc    +0,d1
 
@@ -94,12 +91,12 @@ do_csum_remainder:
         cmp     +16,d2
         bcs     do_csum_fewer_than_16
         mov     (a0+),d0
-        add     d0,d1
         mov     (a0+),e0
-        addc    e0,d1
         mov     (a0+),e1
-        addc    e1,d1
         mov     (a0+),e3
+        add     d0,d1
+        addc    e0,d1
+        addc    e1,d1
         addc    e3,d1
         addc    +0,d1
         add     -16,d2
@@ -131,9 +128,9 @@ do_csum_fewer_than_4:
         xor_cmp d0,d0,+2,d2
         bcs     do_csum_fewer_than_2
         movhu   (a0+),d0
-do_csum_fewer_than_2:
         and     +1,d2
         beq     do_csum_add_last_bit
+do_csum_fewer_than_2:
         movbu   (a0),d3
         add     d3,d0
 do_csum_add_last_bit:
@@ -142,21 +139,19 @@ do_csum_add_last_bit:
 
 do_csum_done:
         # compress the checksum down to 16 bits
-        mov     +0xffff0000,d2
-        and     d1,d2
+        mov     +0xffff0000,d0
+        and     d1,d0
         asl     +16,d1
-        add     d2,d1,d0
+        add     d1,d0
         addc    +0xffff,d0
         lsr     +16,d0
 
         # flip the halves of the word result if the buffer was oddly aligned
-        mov     (12,sp),d1
-        and     +1,d1
+        and     +1,a1
         beq     do_csum_not_oddly_aligned
         swaph   d0,d0                           # exchange bits 15:8 with 7:0
 
 do_csum_not_oddly_aligned:
         ret     [d2,d3],8
 
-do_csum_end:
-        .size   do_csum, do_csum_end-do_csum
+        .size   do_csum, .-do_csum