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

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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>
This commit is contained in:
Gao Pan 2016-11-24 19:04:42 +08:00 committed by Mark Brown
parent e3a49390eb
commit 14de3918ea
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-fsl-lpspi.c
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@ -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);