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| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2026-02-04 16:34:27 +0300 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2026-02-23 19:03:28 +0300 |
| commit | e0cf84109bc6c6768337123f1de24ff56b41c91b (patch) | |
| tree | 04c12f8cc1a5b69bbd0e2f9b2a24b28506d1e6b5 | |
| parent | 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f (diff) | |
| download | linux-e0cf84109bc6c6768337123f1de24ff56b41c91b.tar.xz | |
reset: rzg2l-usbphy-ctrl: Check pwrrdy is valid before using it
The pwrrdy regmap_filed is allocated in rzg2l_usbphy_ctrl_pwrrdy_init()
only if the driver data is set to RZG2L_USBPHY_CTRL_PWRRDY. Check that
pwrrdy is valid before using it to avoid "Unable to handle kernel NULL
pointer dereference at virtual address" errors.
Fixes: c5b7cd9adefc ("reset: rzg2l-usbphy-ctrl: Add suspend/resume support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| -rw-r--r-- | drivers/reset/reset-rzg2l-usbphy-ctrl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/reset/reset-rzg2l-usbphy-ctrl.c b/drivers/reset/reset-rzg2l-usbphy-ctrl.c index 32bc268c9149..05dd9b4a02df 100644 --- a/drivers/reset/reset-rzg2l-usbphy-ctrl.c +++ b/drivers/reset/reset-rzg2l-usbphy-ctrl.c @@ -136,6 +136,9 @@ static int rzg2l_usbphy_ctrl_set_pwrrdy(struct regmap_field *pwrrdy, { u32 val = power_on ? 0 : 1; + if (!pwrrdy) + return 0; + /* The initialization path guarantees that the mask is 1 bit long. */ return regmap_field_update_bits(pwrrdy, 1, val); } |