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pinctrl: ralink: Check for null return of devm_kcalloc

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[ Upstream commit c3b821e8e406d5650e587b7ac624ac24e9b780a8 ]

Because of the possible failure of the allocation, data->domains might
be NULL pointer and will cause the dereference of the NULL pointer
later.
Therefore, it might be better to check it and directly return -ENOMEM
without releasing data manually if fails, because the comment of the
devm_kmalloc() says "Memory allocated with this function is
automatically freed on driver detach.".

Fixes: a86854d0c5 ("treewide: devm_kzalloc() -> devm_kcalloc()")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Link: https://lore.kernel.org/r/20220710154922.2610876-1-williamsukatube@163.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
William Dean 2022-07-10 23:49:22 +08:00 committed by Greg Kroah-Hartman
parent 493ceca327
commit 5694b162f2
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
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@ -267,6 +267,8 @@ static int rt2880_pinmux_pins(struct rt2880_priv *p)
p->func[i]->pin_count,
sizeof(int),
GFP_KERNEL);
if (!p->func[i]->pins)
return -ENOMEM;
for (j = 0; j < p->func[i]->pin_count; j++)
p->func[i]->pins[j] = p->func[i]->pin_first + j;