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can: mscan-mpc5xxx: fix return value check in mpc512x_can_get_clock() 

In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the error
handling should be replaced with IS_ERR().

dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Wei Yongjun 2012-09-21 15:09:47 +08:00 committed by Marc Kleine-Budde
parent 56b9f30198
commit f61bd0585d
1 changed files with 2 additions and 2 deletions
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4
drivers/net/can/mscan/mpc5xxx_can.c
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@ -181,7 +181,7 @@ static u32 __devinit mpc512x_can_get_clock(struct platform_device *ofdev,
if (!clock_name || !strcmp(clock_name, "sys")) {
sys_clk = clk_get(&ofdev->dev, "sys_clk");
if (!sys_clk) {
if (IS_ERR(sys_clk)) {
dev_err(&ofdev->dev, "couldn't get sys_clk\n");
goto exit_unmap;
}
@ -204,7 +204,7 @@ static u32 __devinit mpc512x_can_get_clock(struct platform_device *ofdev,
if (clocksrc < 0) {
ref_clk = clk_get(&ofdev->dev, "ref_clk");
if (!ref_clk) {
if (IS_ERR(ref_clk)) {
dev_err(&ofdev->dev, "couldn't get ref_clk\n");
goto exit_unmap;
}