spi: dw-mmio: Clock should be shut when error occurs
When optional clock requesting fails, the main clock is still up and running,
we should shut it down in such caee.
Fixes: 560ee7e91009 ("spi: dw: Add support for an optional interface clock")
Cc: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Gareth Williams <gareth.williams.jx@renesas.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Gareth Williams <gareth.williams.jx@renesas.com>
Link: https://lore.kernel.org/r/20190710114243.30101-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 1c1cac9..4fa7e7a5 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -170,8 +170,10 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
/* Optional clock needed to access the registers */
dwsmmio->pclk = devm_clk_get_optional(&pdev->dev, "pclk");
- if (IS_ERR(dwsmmio->pclk))
- return PTR_ERR(dwsmmio->pclk);
+ if (IS_ERR(dwsmmio->pclk)) {
+ ret = PTR_ERR(dwsmmio->pclk);
+ goto out_clk;
+ }
ret = clk_prepare_enable(dwsmmio->pclk);
if (ret)
goto out_clk;