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opp: Fix error check in dev_pm_opp_attach_genpd() 

[ Upstream commit 4ea9496cbc ]

dev_pm_domain_attach_by_name() may return NULL in some cases,
so IS_ERR() doesn't meet the requirements. Thus fix it.

Fixes: 6319aee10e ("opp: Attach genpds to devices from within OPP core")
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
[ Viresh: Replace ENODATA with ENODEV ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tang Bin 2022-05-24 20:31:51 +08:00 committed by Greg Kroah-Hartman
parent c50dd37d05
commit 426ac3e292
1 changed files with 2 additions and 2 deletions
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4
drivers/opp/core.c
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@ -2528,8 +2528,8 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
}
virt_dev = dev_pm_domain_attach_by_name(dev, *name);
if (IS_ERR(virt_dev)) {
ret = PTR_ERR(virt_dev);
if (IS_ERR_OR_NULL(virt_dev)) {
ret = PTR_ERR(virt_dev) ? : -ENODEV;
dev_err(dev, "Couldn't attach to pm_domain: %d\n", ret);
goto err;
}