This is a note to let you know that I've just added the patch titled
drm/rockchip: dsi: remove extra component_del() call
to the 5.4-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-rockchip-dsi-remove-extra-component_del-call.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b354498bbe65c917d521b3b56317ddc9ab217425 Mon Sep 17 00:00:00 2001
From: Thomas Hebb <tommyhebb@xxxxxxxxx>
Date: Sun, 18 Apr 2021 19:03:04 -0700
Subject: drm/rockchip: dsi: remove extra component_del() call
From: Thomas Hebb <tommyhebb@xxxxxxxxx>
commit b354498bbe65c917d521b3b56317ddc9ab217425 upstream.
commit cf6d100dd238 ("drm/rockchip: dsi: add dual mipi support") added
this devcnt field and call to component_del(). However, these both
appear to be erroneous changes left over from an earlier version of the
patch. In the version merged, nothing ever modifies devcnt, meaning
component_del() runs unconditionally and in addition to the
component_del() calls in dw_mipi_dsi_rockchip_host_detach(). The second
call fails to delete anything and produces a warning in dmesg.
If we look at the previous version of the patch[1], however, we see that
it had logic to calculate devcnt and call component_add() in certain
situations. This was removed in v6, and the fact that the deletion code
was not appears to have been an oversight.
[1] https://patchwork.kernel.org/project/dri-devel/patch/20180821140515.22246-8-heiko@xxxxxxxxx/
Fixes: cf6d100dd238 ("drm/rockchip: dsi: add dual mipi support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Hebb <tommyhebb@xxxxxxxxx>
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/201385acb0eeb5dfb037afdc6a94bfbcdab97f99.1618797778.git.tommyhebb@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 4 ----
1 file changed, 4 deletions(-)
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -231,7 +231,6 @@ struct dw_mipi_dsi_rockchip {
struct dw_mipi_dsi *dmd;
const struct rockchip_dw_dsi_chip_data *cdata;
struct dw_mipi_dsi_plat_data pdata;
- int devcnt;
};
struct dphy_pll_parameter_map {
@@ -1001,9 +1000,6 @@ static int dw_mipi_dsi_rockchip_remove(s
{
struct dw_mipi_dsi_rockchip *dsi = platform_get_drvdata(pdev);
- if (dsi->devcnt == 0)
- component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops);
-
dw_mipi_dsi_remove(dsi->dmd);
return 0;
Patches currently in stable-queue which might be from tommyhebb@xxxxxxxxx are
queue-5.4/drm-rockchip-dsi-remove-extra-component_del-call.patch
