diff options
| author | Tobias Jordan <Tobias.Jordan@elektrobit.com> | 2018-04-30 17:30:06 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-05-04 02:40:05 +0300 |
| commit | 62bbc864d1946c715063bd481bff3641fd1324e2 (patch) | |
| tree | 429ca901f6c582dd3a78c21134ee3d54a24d32b0 | |
| parent | 6126fd836586609d6292bb5bc50b2c0a3a7eec89 (diff) | |
| download | linux-62bbc864d1946c715063bd481bff3641fd1324e2.tar.xz | |
spi: pxa2xx: check clk_prepare_enable() return value
clk_prepare_enable() can fail, so its return value should be checked and
acted upon.
Found by Linux Driver Verification project (linuxtesting.org).
Fixes: 3343b7a6d2cd ("spi/pxa2xx: convert to the common clk framework")
Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-pxa2xx.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 40f1346b8188..0b2d60d30f69 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1612,7 +1612,9 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) } /* Enable SOC clock */ - clk_prepare_enable(ssp->clk); + status = clk_prepare_enable(ssp->clk); + if (status) + goto out_error_dma_irq_alloc; master->max_speed_hz = clk_get_rate(ssp->clk); @@ -1716,6 +1718,8 @@ out_error_clock_enabled: pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); clk_disable_unprepare(ssp->clk); + +out_error_dma_irq_alloc: pxa2xx_spi_dma_release(drv_data); free_irq(ssp->irq, drv_data); @@ -1789,8 +1793,11 @@ static int pxa2xx_spi_resume(struct device *dev) int status; /* Enable the SSP clock */ - if (!pm_runtime_suspended(dev)) - clk_prepare_enable(ssp->clk); + if (!pm_runtime_suspended(dev)) { + status = clk_prepare_enable(ssp->clk); + if (status) + return status; + } /* Restore LPSS private register bits */ if (is_lpss_ssp(drv_data)) @@ -1819,9 +1826,10 @@ static int pxa2xx_spi_runtime_suspend(struct device *dev) static int pxa2xx_spi_runtime_resume(struct device *dev) { struct driver_data *drv_data = dev_get_drvdata(dev); + int status; - clk_prepare_enable(drv_data->ssp->clk); - return 0; + status = clk_prepare_enable(drv_data->ssp->clk); + return status; } #endif |