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spi: spi-mxs: Check the return value from clk_prepare_enable() 

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

While at it, rename 'out_free_dma' to 'out_disable_clk' so that it can properly
describe its purpose.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Fabio Estevam 2013-07-10 00:16:28 -03:00 committed by Mark Brown
parent e11933f626
commit 9c4a39afaa
1 changed files with 7 additions and 3 deletions
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10
drivers/spi/spi-mxs.c
View File

@ -563,7 +563,10 @@ static int mxs_spi_probe(struct platform_device *pdev)
goto out_master_free;
}
clk_prepare_enable(ssp->clk);
ret = clk_prepare_enable(ssp->clk);
if (ret)
goto out_dma_release;
clk_set_rate(ssp->clk, clk_freq);
ssp->clk_rate = clk_get_rate(ssp->clk) / 1000;
@ -574,13 +577,14 @@ static int mxs_spi_probe(struct platform_device *pdev)
ret = spi_register_master(master);
if (ret) {
dev_err(&pdev->dev, "Cannot register SPI master, %d\n", ret);
goto out_free_dma;
goto out_disable_clk;
}
return 0;
out_free_dma:
out_disable_clk:
clk_disable_unprepare(ssp->clk);
out_dma_release:
dma_release_channel(ssp->dmach);
out_master_free:
spi_master_put(master);