[alsa-devel] [PATCH v2 1/6] ASoC: Intel: Skylake: Remove second shim read in register_poll

[Guneshwor Singh]

From: "Subhransu S. Prusty" <subhransu.s.prusty at intel.com>

No need to read the register again if the value read has already matched
the target during the loop. So remove the second shim read.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh at intel.com>
Acked-by: Vinod Koul <vinod.koul at intel.com>
---
 sound/soc/intel/common/sst-dsp.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sound/soc/intel/common/sst-dsp.c b/sound/soc/intel/common/sst-dsp.c
index 11c0805393ff..fd82f4b1d4a0 100644
--- a/sound/soc/intel/common/sst-dsp.c
+++ b/sound/soc/intel/common/sst-dsp.c
@@ -269,7 +269,7 @@ int sst_dsp_register_poll(struct sst_dsp *ctx, u32 offset, u32 mask,
 	 */
 
 	timeout = jiffies + msecs_to_jiffies(time);
-	while (((sst_dsp_shim_read_unlocked(ctx, offset) & mask) != target)
+	while ((((reg = sst_dsp_shim_read_unlocked(ctx, offset)) & mask) != target)
 		&& time_before(jiffies, timeout)) {
 		k++;
 		if (k > 10)
@@ -278,8 +278,6 @@ int sst_dsp_register_poll(struct sst_dsp *ctx, u32 offset, u32 mask,
 		usleep_range(s, 2*s);
 	}
 
-	reg = sst_dsp_shim_read_unlocked(ctx, offset);
-
 	if ((reg & mask) == target) {
 		dev_dbg(ctx->dev, "FW Poll Status: reg=%#x %s successful\n",
 					reg, operation);
-- 
2.15.1