This is a note to let you know that I've just added the patch titled
drm/panel: nt36523: fix return value check in nt36523_probe()
to the 6.6-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-panel-nt36523-fix-return-value-check-in-nt36523_.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d325045e0ac7895fcb5cc3b79c0311fdb9c681d6
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Wed Nov 29 17:07:15 2023 +0800
drm/panel: nt36523: fix return value check in nt36523_probe()
[ Upstream commit fb18fe0fdf22a2f4512a8b644bb5ea1473829cda ]
mipi_dsi_device_register_full() never returns NULL pointer, it
will return ERR_PTR() when it fails, so replace the check with
IS_ERR().
Fixes: 0993234a0045 ("drm/panel: Add driver for Novatek NT36523")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231129090715.856263-1-yangyingliang@xxxxxxxxxxxxxxx
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231129090715.856263-1-yangyingliang@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36523.c b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
index 9632b9e95b715..c4a804c5d6aac 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt36523.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
@@ -1266,9 +1266,9 @@ static int nt36523_probe(struct mipi_dsi_device *dsi)
return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");
pinfo->dsi[1] = mipi_dsi_device_register_full(dsi1_host, info);
- if (!pinfo->dsi[1]) {
+ if (IS_ERR(pinfo->dsi[1])) {
dev_err(dev, "cannot get secondary DSI device\n");
- return -ENODEV;
+ return PTR_ERR(pinfo->dsi[1]);
}
}
