Current code just busy waits with nop for clock becoming stable,
relaxing the cpu here improves readability and portability and also
removes a unnecessary difference with the mtk-sd driver.
Signed-off-by: Christian Lütke-Stetzkamp <christ...@lkamp.de>
---
drivers/staging/mt7621-mmc/sd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 69c554b69566..d702d4d845d1 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -618,7 +618,7 @@ static void msdc_set_mclk(struct msdc_host *host, int ddr,
unsigned int hz)
/* wait clock stable */
while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB))
- ;
+ cpu_relax();
host->sclk = sclk;
host->mclk = hz;
--
2.16.1
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