Patch "backlight: lm3639: Fully initialize backlight_properties during probe" has been added to the 6.6-stable tree

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

    backlight: lm3639: Fully initialize backlight_properties during 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:
     backlight-lm3639-fully-initialize-backlight_properti.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 96e3564e8509b95be028f196805ecab6cf6daac3
Author: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Date:   Tue Feb 20 15:35:25 2024 +0000

    backlight: lm3639: Fully initialize backlight_properties during probe
    
    [ Upstream commit abb5a5d951fbea3feb5c4ba179b89bb96a1d3462 ]
    
    props is stack allocated and the fields that are not explcitly set
    by the probe function need to be zeroed or we'll get undefined behaviour
    (especially so power/blank states)!
    
    Fixes: 0f59858d5119 ("backlight: add new lm3639 backlight driver")
    Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240220153532.76613-3-daniel.thompson@xxxxxxxxxx
    Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c
index 5246c171497d6..564f62acd7211 100644
--- a/drivers/video/backlight/lm3639_bl.c
+++ b/drivers/video/backlight/lm3639_bl.c
@@ -338,6 +338,7 @@ static int lm3639_probe(struct i2c_client *client)
 	}
 
 	/* backlight */
+	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_RAW;
 	props.brightness = pdata->init_brt_led;
 	props.max_brightness = pdata->max_brt_led;




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