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anolis-cloud-kernel
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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>
This commit is contained in:
Arvind Yadav 2017-08-08 15:24:56 +05:30 committed by Lee Jones
parent e10feb36c9
commit b62d8dbe41
1 changed files with 14 additions and 3 deletions
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17
drivers/mfd/t7l66xb.c
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@ -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);