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authorMichael Hennerich <michael.hennerich@analog.com>2009-02-04 16:49:45 +0800
committerBryan Wu <cooloney@kernel.org>2009-02-04 16:49:45 +0800
commitc8e674125e03c5f36ccfd61d83b933e6956074b0 (patch)
tree65d77a6bc0da07db03c4e8e990162d1607cb99a3
parent4e653e04cc1c3553af539ffc81fb56d83d83c733 (diff)
downloadlinux-c8e674125e03c5f36ccfd61d83b933e6956074b0.tar.bz2
Blackfin arch: Remove outdated code
The removed version with the loop registers saved on the stack was originally intended to workaround the missing toolchain support for LoopReg Clobbers. Since our toolchain now supports these there is no point in keeping this workaround. And since we don't touch LoopRegs anymore we're no longer subject for ANOMALY_05000312. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
-rw-r--r--arch/blackfin/include/asm/delay.h24
1 files changed, 1 insertions, 23 deletions
diff --git a/arch/blackfin/include/asm/delay.h b/arch/blackfin/include/asm/delay.h
index 47f98c5067b5..c31f91cc1d5d 100644
--- a/arch/blackfin/include/asm/delay.h
+++ b/arch/blackfin/include/asm/delay.h
@@ -13,29 +13,7 @@
static inline void __delay(unsigned long loops)
{
- if (ANOMALY_05000312) {
- /* Interrupted loads to loop registers -> bad */
- unsigned long tmp;
- __asm__ __volatile__(
- "[--SP] = LC0;"
- "[--SP] = LT0;"
- "[--SP] = LB0;"
- "LSETUP (1f,1f) LC0 = %1;"
- "1: NOP;"
- /* We take advantage of the fact that LC0 is 0 at
- * the end of the loop. Otherwise we'd need some
- * NOPs after the CLI here.
- */
- "CLI %0;"
- "LB0 = [SP++];"
- "LT0 = [SP++];"
- "LC0 = [SP++];"
- "STI %0;"
- : "=d" (tmp)
- : "a" (loops)
- );
- } else
- __asm__ __volatile__ (
+__asm__ __volatile__ (
"LSETUP(1f, 1f) LC0 = %0;"
"1: NOP;"
: