提交 624d947e 编写于 作者: W weety

use __rt_ffs instead of ffs

上级 a33e9927
......@@ -210,37 +210,6 @@ rt_inline rt_uint32_t fls(rt_uint32_t val)
return bit;
}
#if !defined(__GNUC__) || defined(__CC_ARM)
rt_inline rt_uint32_t ffs(rt_uint32_t x)
{
int r = 1;
if (!x)
return 0;
if (!(x & 0xffff)) {
x >>= 16;
r += 16;
}
if (!(x & 0xff)) {
x >>= 8;
r += 8;
}
if (!(x & 0xf)) {
x >>= 4;
r += 4;
}
if (!(x & 3)) {
x >>= 2;
r += 2;
}
if (!(x & 1)) {
x >>= 1;
r += 1;
}
return r;
}
#endif
void mmcsd_host_lock(struct rt_mmcsd_host *host);
void mmcsd_host_unlock(struct rt_mmcsd_host *host);
void mmcsd_req_complete(struct rt_mmcsd_host *host);
......
......@@ -493,7 +493,7 @@ rt_uint32_t mmcsd_select_voltage(struct rt_mmcsd_host *host, rt_uint32_t ocr)
ocr &= host->valid_ocr;
bit = ffs(ocr);
bit = __rt_ffs(ocr);
if (bit)
{
bit -= 1;
......
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