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authorUlf Hansson <ulf.hansson@stericsson.com>2011-11-04 07:10:09 (GMT)
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-11-08 18:25:03 (GMT)
commit71e63e748ee6f4bad482b8021386eeb74f6e47f1 (patch)
tree738318d18f037c8f283ff601f549db46ad1a7a51 /drivers/spi/spi-pl022.c
parentabf015f04614a3a7da43d35b55edc90189af4e6a (diff)
downloadlinux-71e63e748ee6f4bad482b8021386eeb74f6e47f1.tar.xz
ARM: 7149/1: spi/pl022: Enable clock in probe
Make sure we enable the clock before leaving probe. Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/spi/spi-pl022.c')
-rw-r--r--drivers/spi/spi-pl022.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f103e47..5559b22 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2184,6 +2184,12 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
goto err_clk_prep;
}
+ status = clk_enable(pl022->clk);
+ if (status) {
+ dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n");
+ goto err_no_clk_en;
+ }
+
/* Disable SSP */
writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)),
SSP_CR1(pl022->virtbase));
@@ -2237,6 +2243,8 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
free_irq(adev->irq[0], pl022);
err_no_irq:
+ clk_disable(pl022->clk);
+ err_no_clk_en:
clk_unprepare(pl022->clk);
err_clk_prep:
clk_put(pl022->clk);