[PATCH 6.18 041/227] pwm: max7360: Populate missing .sizeof_wfhw in max7360_pwm_ops

Greg Kroah-Hartman
2026-01-28T15:52:24Z

From: Richard Genoud <richard.genoud@bootlin.com>

[ Upstream commit 63faf32666e03a78cc985bcbae196418cf7d7938 ]

The sizeof_wfhw field wasn't populated in max7360_pwm_ops so it was set
to 0 by default.
While this is ok for now because:
sizeof(struct max7360_pwm_waveform) < PWM_WFHWSIZE
in the future, if struct max7360_pwm_waveform grows, it could lead to
stack corruption.

Fixes: d93a75d94b79 ("pwm: max7360: Add MAX7360 PWM support")
Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
Link: https://patch.msgid.link/20260113163907.368919-1-richard.genoud@bootlin.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pwm/pwm-max7360.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/pwm/pwm-max7360.c b/drivers/pwm/pwm-max7360.c
index ebf93a7aee5be..31972bd00ebe9 100644
--- a/drivers/pwm/pwm-max7360.c
+++ b/drivers/pwm/pwm-max7360.c
@@ -153,6 +153,7 @@ static int max7360_pwm_read_waveform(struct pwm_chip *chip,
}

static const struct pwm_ops max7360_pwm_ops = {
+ .sizeof_wfhw = sizeof(struct max7360_pwm_waveform),
.request = max7360_pwm_request,
.round_waveform_tohw = max7360_pwm_round_waveform_tohw,
.round_waveform_fromhw = max7360_pwm_round_waveform_fromhw,
--
2.51.0