5.15-stable review patch. If anyone has any objections, please let me know.
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From: Marek Vasut marex@denx.de
[ Upstream commit 162e48cb1d84c2c966b649b8ac5c9d4f75f6d44f ]
Make sure the connector is fully initialized before signalling any HPD events via drm_kms_helper_hotplug_event(), otherwise this may lead to NULL pointer dereference.
Signed-off-by: Marek Vasut marex@denx.de Reviewed-by: Robert Foss rfoss@kernel.org Signed-off-by: Robert Foss rfoss@kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20240531203333.277476-1-marex@... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 4c6f3052156b..3436d39c90b4 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1527,7 +1527,7 @@ static irqreturn_t tc_irq_handler(int irq, void *arg) dev_err(tc->dev, "syserr %x\n", stat); }
- if (tc->hpd_pin >= 0 && tc->bridge.dev) { + if (tc->hpd_pin >= 0 && tc->bridge.dev && tc->aux.drm_dev) { /* * H is triggered when the GPIO goes high. *