This is a note to let you know that I've just added the patch titled
drm/bridge: tc358767: Check if fully initialized before signalling HPD event via IRQ
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-bridge-tc358767-check-if-fully-initialized-befor.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4707e67d1bc7257242b86bef9ca7f3cd9516cf04
Author: Marek Vasut <marex@xxxxxxx>
Date: Fri May 31 22:33:12 2024 +0200
drm/bridge: tc358767: Check if fully initialized before signalling HPD event via IRQ
[ 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@xxxxxxx>
Reviewed-by: Robert Foss <rfoss@xxxxxxxxxx>
Signed-off-by: Robert Foss <rfoss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240531203333.277476-1-marex@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 926ab5c3c31a..0af2bd8706e4 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1841,7 +1841,7 @@ 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.
*
