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PM / devfreq: rk3399_dmc: fix error return code in rk3399_dmcfreq_probe() 

platform_get_irq() returns an error code, but the rk3399_dmc
driver ignores it and always returns -EINVAL. This is not correct,
and prevents -EPROBE_DEFER from being propagated properly.

Notice that platform_get_irq() no longer returns 0 on error:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af

Print and propagate the return value of platform_get_irq on failure.

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Gustavo A. R. Silva 2017-07-03 07:59:26 -05:00 committed by MyungJoo Ham
parent 6f7da29041
commit da55b1ad4b
1 changed files with 3 additions and 2 deletions
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5
drivers/devfreq/rk3399_dmc.c
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@ -336,8 +336,9 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "Cannot get the dmc interrupt resource\n");
return -EINVAL;
dev_err(&pdev->dev,
"Cannot get the dmc interrupt resource: %d\n", irq);
return irq;
}
data = devm_kzalloc(dev, sizeof(struct rk3399_dmcfreq), GFP_KERNEL);
if (!data)