This is a note to let you know that I've just added the patch titled
media: saa7134: avoid a shift overflow
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:
media-saa7134-avoid-a-shift-overflow.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.
commit 7d2122b7a99b77b2c452b2085d5c2fc5a5993dd6
Author: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Date: Wed Sep 2 08:37:12 2020 +0200
media: saa7134: avoid a shift overflow
[ Upstream commit 15a36aae1ec1c1f17149b6113b92631791830740 ]
As reported by smatch:
drivers/media/pci/saa7134//saa7134-tvaudio.c:686 saa_dsp_writel() warn: should 'reg << 2' be a 64 bit type?
On a 64-bits Kernel, the shift might be bigger than 32 bits.
In real, this should never happen, but let's shut up the warning.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/pci/saa7134/saa7134-tvaudio.c b/drivers/media/pci/saa7134/saa7134-tvaudio.c
index 21a579309575d..02407983ce236 100644
--- a/drivers/media/pci/saa7134/saa7134-tvaudio.c
+++ b/drivers/media/pci/saa7134/saa7134-tvaudio.c
@@ -696,7 +696,8 @@ int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
{
int err;
- audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
+ audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n",
+ (reg << 2) & 0xffffffff, value);
err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
if (err < 0)
return err;
