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authorDavid S. Miller <davem@davemloft.net>2011-03-10 17:26:00 -0500
committerDavid S. Miller <davem@davemloft.net>2011-03-10 17:26:00 -0500
commit33175d84ee3fa29991adb80513683e010769e807 (patch)
tree3731f61cf82451b6892cf1368701e57e35d92908 /arch/sh/lib/delay.c
parentc5908939b2738bafe1b309bc2465cb9f2e6184c5 (diff)
parent6dfbd87a20a737641ef228230c77f4262434fa24 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/bnx2x/bnx2x_cmn.c
Diffstat (limited to 'arch/sh/lib/delay.c')
-rw-r--r--arch/sh/lib/delay.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c
index faa8f86c0db4..0901b2f14e15 100644
--- a/arch/sh/lib/delay.c
+++ b/arch/sh/lib/delay.c
@@ -10,6 +10,16 @@
10void __delay(unsigned long loops) 10void __delay(unsigned long loops)
11{ 11{
12 __asm__ __volatile__( 12 __asm__ __volatile__(
13 /*
14 * ST40-300 appears to have an issue with this code,
15 * normally taking two cycles each loop, as with all
16 * other SH variants. If however the branch and the
17 * delay slot straddle an 8 byte boundary, this increases
18 * to 3 cycles.
19 * This align directive ensures this doesn't occur.
20 */
21 ".balign 8\n\t"
22
13 "tst %0, %0\n\t" 23 "tst %0, %0\n\t"
14 "1:\t" 24 "1:\t"
15 "bf/s 1b\n\t" 25 "bf/s 1b\n\t"