Patch "drm/bridge: it66121: Initialize {device,vendor}_ids" has been added to the 5.14-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/bridge: it66121: Initialize {device,vendor}_ids

to the 5.14-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-it66121-initialize-device-vendor-_ids.patch
and it can be found in the queue-5.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 238c372336a823ce7c947574825e2a8e5f846647
Author: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Date:   Fri Aug 27 17:39:55 2021 +0100

    drm/bridge: it66121: Initialize {device,vendor}_ids
    
    [ Upstream commit 3a5f3d61de657bc1c2b53b77d065c5526f982e10 ]
    
    These two arrays are populated with data read from the I2C device
    through regmap_read(), and the data is then compared with hardcoded
    vendor/product ID values of supported chips.
    
    However, the return value of regmap_read() was never checked. This is
    fine, as long as the two arrays are zero-initialized, so that we don't
    compare the vendor/product IDs against whatever garbage is left on the
    stack.
    
    Address this issue by zero-initializing these two arrays.
    
    Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
    Fixes: 988156dc2fc9 ("drm: bridge: add it66121 driver")
    Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
    Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20210827163956.27517-1-paul@xxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
index 2f2a09adb4bc8..b130d01147c6c 100644
--- a/drivers/gpu/drm/bridge/ite-it66121.c
+++ b/drivers/gpu/drm/bridge/ite-it66121.c
@@ -889,7 +889,7 @@ unlock:
 static int it66121_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
-	u32 vendor_ids[2], device_ids[2], revision_id;
+	u32 revision_id, vendor_ids[2] = { 0 }, device_ids[2] = { 0 };
 	struct device_node *ep;
 	int ret;
 	struct it66121_ctx *ctx;