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clk: davinci: Add NULL check in davinci_lpsc_clk_register()

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[ Upstream commit 13de464f445d42738fe18c9a28bab056ba3a290a ]

devm_kasprintf() returns NULL when memory allocation fails. Currently,
davinci_lpsc_clk_register() does not check for this case, which results
in a NULL pointer dereference.

Add NULL check after devm_kasprintf() to prevent this issue and ensuring
no resources are left allocated.

Fixes: c6ed4d734b ("clk: davinci: New driver for davinci PSC clocks")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
Link: https://lore.kernel.org/r/20250401131341.26800-1-bsdhenrymartin@gmail.com
Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Henry Martin 2025-04-01 21:13:41 +08:00 • committed by Greg Kroah-Hartman
commit 77e9ad7a2d
1 changed files with 5 additions and 0 deletions
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5
drivers/clk/davinci/psc.c
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@ -278,6 +278,11 @@ davinci_lpsc_clk_register(struct device *dev, const char *name,
lpsc->pm_domain.name = devm_kasprintf(dev, GFP_KERNEL, "%s: %s",
best_dev_name(dev), name);
if (!lpsc->pm_domain.name) {
clk_hw_unregister(&lpsc->hw);
kfree(lpsc);
return ERR_PTR(-ENOMEM);
}
lpsc->pm_domain.attach_dev = davinci_psc_genpd_attach_dev;
lpsc->pm_domain.detach_dev = davinci_psc_genpd_detach_dev;
lpsc->pm_domain.flags = GENPD_FLAG_PM_CLK;