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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-03-12 01:25:53 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-03-12 01:25:53 -0700 |
| commit | 9c3c8afccb6a163fd2be739f511e863eab668702 (patch) | |
| tree | e587a5377ada98fed8cfa6c8ee63125361f2818a /arch/sh/lib/delay.c | |
| parent | 290293eda2c6dd368476d71433bdef07c39a6829 (diff) | |
| parent | a5abba989deceb731047425812d268daf7536575 (diff) | |
Merge commit 'v2.6.38-rc8' into spi/next
Conflicts:
drivers/spi/pxa2xx_spi_pci.c
Diffstat (limited to 'arch/sh/lib/delay.c')
| -rw-r--r-- | arch/sh/lib/delay.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c index faa8f86c0db..0901b2f14e1 100644 --- a/arch/sh/lib/delay.c +++ b/arch/sh/lib/delay.c @@ -10,6 +10,16 @@ void __delay(unsigned long loops) { __asm__ __volatile__( + /* + * ST40-300 appears to have an issue with this code, + * normally taking two cycles each loop, as with all + * other SH variants. If however the branch and the + * delay slot straddle an 8 byte boundary, this increases + * to 3 cycles. + * This align directive ensures this doesn't occur. + */ + ".balign 8\n\t" + "tst %0, %0\n\t" "1:\t" "bf/s 1b\n\t" |