This is a note to let you know that I've just added the patch titled thermal: rockchip: fix a impossible condition caused by the warning to the 4.4-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: thermal-rockchip-fix-a-impossible-condition-caused-by-the-warning.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 43b4eb9fe719b107c8e5d49d1edbff0c135a42cb Mon Sep 17 00:00:00 2001 From: Caesar Wang <wxt@xxxxxxxxxxxxxx> Date: Mon, 15 Feb 2016 15:33:28 +0800 Subject: thermal: rockchip: fix a impossible condition caused by the warning From: Caesar Wang <wxt@xxxxxxxxxxxxxx> commit 43b4eb9fe719b107c8e5d49d1edbff0c135a42cb upstream. As the Dan report the smatch check the thermal driver warning: drivers/thermal/rockchip_thermal.c:551 rockchip_configure_from_dt() warn: impossible condition '(thermal->tshut_temp > ((~0 >> 1))) => (s32min-s32max > s32max)' Although The shut_temp read from DT is u32,the temperature is currently represented as int not long in the thermal driver. Let's change to make shut_temp instead of the thermal->tshut_temp for the condition. Fixes: commit 437df2172e8d ("thermal: rockchip: consistently use int for temperatures") Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx> Signed-off-by: Eduardo Valentin <edubezval@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/thermal/rockchip_thermal.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) --- a/drivers/thermal/rockchip_thermal.c +++ b/drivers/thermal/rockchip_thermal.c @@ -545,15 +545,14 @@ static int rockchip_configure_from_dt(st thermal->chip->tshut_temp); thermal->tshut_temp = thermal->chip->tshut_temp; } else { + if (shut_temp > INT_MAX) { + dev_err(dev, "Invalid tshut temperature specified: %d\n", + shut_temp); + return -ERANGE; + } thermal->tshut_temp = shut_temp; } - if (thermal->tshut_temp > INT_MAX) { - dev_err(dev, "Invalid tshut temperature specified: %d\n", - thermal->tshut_temp); - return -ERANGE; - } - if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) { dev_warn(dev, "Missing tshut mode property, using default (%s)\n", Patches currently in stable-queue which might be from wxt@xxxxxxxxxxxxxx are queue-4.4/spi-rockchip-modify-dma-max-burst-to-1.patch queue-4.4/thermal-rockchip-fix-a-impossible-condition-caused-by-the-warning.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html