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authorArvind Yadav <arvind.yadav.cs@gmail.com>2017-08-08 15:24:56 +0530
committerLee Jones <lee.jones@linaro.org>2017-09-05 08:46:01 +0100
commitb62d8dbe419893b7aee5fac282e1da8c811cfcfb (patch)
treede9a18bf7cb1579e047085e18ff1182a3cd6c1e5 /drivers/mfd/t7l66xb.c
parente10feb36c98576fd7d1f24edaf2669dbfe7df21d (diff)
downloadlinux-b62d8dbe419893b7aee5fac282e1da8c811cfcfb.tar.bz2
mfd: t7l66xb: Handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value. we must disable clock, if t7l66xb_probe is not successful. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/t7l66xb.c')
-rw-r--r--drivers/mfd/t7l66xb.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
index 22c811396edc..43d8683266de 100644
--- a/drivers/mfd/t7l66xb.c
+++ b/drivers/mfd/t7l66xb.c
@@ -86,8 +86,11 @@ static int t7l66xb_mmc_enable(struct platform_device *mmc)
struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
unsigned long flags;
u8 dev_ctl;
+ int ret;
- clk_prepare_enable(t7l66xb->clk32k);
+ ret = clk_prepare_enable(t7l66xb->clk32k);
+ if (ret)
+ return ret;
raw_spin_lock_irqsave(&t7l66xb->lock, flags);
@@ -286,8 +289,12 @@ static int t7l66xb_resume(struct platform_device *dev)
{
struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
+ int ret;
+
+ ret = clk_prepare_enable(t7l66xb->clk48m);
+ if (ret)
+ return ret;
- clk_prepare_enable(t7l66xb->clk48m);
if (pdata && pdata->resume)
pdata->resume(dev);
@@ -361,7 +368,9 @@ static int t7l66xb_probe(struct platform_device *dev)
goto err_ioremap;
}
- clk_prepare_enable(t7l66xb->clk48m);
+ ret = clk_prepare_enable(t7l66xb->clk48m);
+ if (ret)
+ goto err_clk_enable;
if (pdata->enable)
pdata->enable(dev);
@@ -386,6 +395,8 @@ static int t7l66xb_probe(struct platform_device *dev)
return 0;
t7l66xb_detach_irq(dev);
+ clk_disable_unprepare(t7l66xb->clk48m);
+err_clk_enable:
iounmap(t7l66xb->scr);
err_ioremap:
release_resource(&t7l66xb->rscr);