diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-07-11 01:26:49 -0300 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-16 08:05:51 -0500 |
| commit | bd4d4ee3d7fbc7ef6a6499859ee641c7f35b0f38 (patch) | |
| tree | ae83aa605445eb7a825f641e08a7bc26022922b4 /drivers/spi | |
| parent | de6bd6a108cba829f69fd77e26a83a6ccd6dc2fd (diff) | |
spi: spi-imx: 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, fix the order of clk_disable_unprepare calls: clk_ipg should be
disabled first, followed by clk_per.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Huang Shijie <b32955@freescale.com>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-imx.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 756cd466cfaf..81c7dd2228f9 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -848,8 +848,13 @@ static int spi_imx_probe(struct platform_device *pdev) goto out_master_put; } - clk_prepare_enable(spi_imx->clk_per); - clk_prepare_enable(spi_imx->clk_ipg); + ret = clk_prepare_enable(spi_imx->clk_per); + if (ret) + goto out_master_put; + + ret = clk_prepare_enable(spi_imx->clk_ipg); + if (ret) + goto out_put_per; spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per); @@ -869,8 +874,9 @@ static int spi_imx_probe(struct platform_device *pdev) return ret; out_clk_put: - clk_disable_unprepare(spi_imx->clk_per); clk_disable_unprepare(spi_imx->clk_ipg); +out_put_per: + clk_disable_unprepare(spi_imx->clk_per); out_master_put: spi_master_put(master); @@ -885,8 +891,8 @@ static int spi_imx_remove(struct platform_device *pdev) spi_bitbang_stop(&spi_imx->bitbang); writel(0, spi_imx->base + MXC_CSPICTRL); - clk_disable_unprepare(spi_imx->clk_per); clk_disable_unprepare(spi_imx->clk_ipg); + clk_disable_unprepare(spi_imx->clk_per); spi_master_put(master); return 0; |