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rk2928: sram: fix loop use Thumb instruction set

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黄涛 2012-08-16 09:18:32 +08:00
parent bbc68b65d9
commit 7db28b5ce2
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mach-rk2928/include/mach/sram.h
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@ -4,7 +4,7 @@
#include <plat/sram.h>
#define SRAM_LOOPS_PER_USEC 24
#define SRAM_LOOP(loops) do { unsigned int i = (loops); if (i < 7) i = 7; barrier(); while (--i) barrier(); } while (0)
#define SRAM_LOOP(loops) do { unsigned int i = (loops); if (i < 7) i = 7; barrier(); asm volatile(".align 4; 1: subs %0, %0, #1; bne 1b;" : "+r" (i)); } while (0)
/* delay on slow mode */
#define sram_udelay(usecs) SRAM_LOOP((usecs)*SRAM_LOOPS_PER_USEC)
/* delay on deep slow mode */