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clocksource/drivers/sun5i: Handle error returns from devm_reset_control_get_optional_exclusive()

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The devm_reset_control_get_optional_exclusive() function may return an
ERR_PTR in case of genuine reset control acquisition errors, not just
NULL which indicates the legitimate absence of an optional reset.

Add an IS_ERR() check after the call in sun5i_timer_probe(). On error,
return the error code to ensure proper failure handling rather than
proceeding with invalid pointers.

Fixes: 7e5bac610d ("clocksource/drivers/sun5i: Convert to platform device driver")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Acked-by: Chen-Yu Tsai <wens@kernel.org>
Link: https://patch.msgid.link/20260205084037.3661261-1-nichen@iscas.ac.cn
This commit is contained in:
Chen Ni
2026-02-05 16:40:37 +08:00
committed by Daniel Lezcano
parent 045a9dac7e
commit fed9f727cc
1 changed files with 3 additions and 0 deletions
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3
drivers/clocksource/timer-sun5i.c
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@@ -286,6 +286,9 @@ static int sun5i_timer_probe(struct platform_device *pdev)
}
rstc = devm_reset_control_get_optional_exclusive(dev, NULL);
if (IS_ERR(rstc))
return dev_err_probe(dev, PTR_ERR(rstc),
"failed to get reset\n");
if (rstc)
reset_control_deassert(rstc);