From: Gao Pan <pandy.gao@nxp.com>
Date: Thu, 24 Nov 2016 11:04:42 +0000 (+0800)
Subject: spi: imx: replace schedule() with cond_resched()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=14de3918eacfc624023775c319e85e6597514195;p=linux.git

spi: imx: replace schedule() with cond_resched()

It's more rational that just do the schedule when necessary
other than do it every time. Thus, it's better to replace
schedule() with cond_resched() in fsl_lpspi_txfifo_empty(),
which contributes to saving cpu time.

Signed-off-by: Gao Pan <pandy.gao@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index 18a269d2e2f8b..539c971b9f05e 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -176,7 +176,7 @@ static int fsl_lpspi_txfifo_empty(struct fsl_lpspi_data *fsl_lpspi)
 			dev_dbg(fsl_lpspi->dev, "txfifo empty timeout\n");
 			return -ETIMEDOUT;
 		}
-		schedule();
+		cond_resched();
 
 	} while (txcnt);