From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
To: unlisted-recipients:; (no To-header on input)
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 23/38] media: saa7134: avoid a shift overflow
Date: Wed, 2 Sep 2020 18:10:26 +0200 [thread overview]
Message-ID: <6ee0a9ec8855f0388fee8cd183abeb60e28b293f.1599062230.git.mchehab+huawei@kernel.org> (raw)
In-Reply-To: <cover.1599062230.git.mchehab+huawei@kernel.org>
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@kernel.org>
---
drivers/media/pci/saa7134/saa7134-tvaudio.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/media/pci/saa7134/saa7134-tvaudio.c b/drivers/media/pci/saa7134/saa7134-tvaudio.c
index 79e1afb71075..5cc4ef21f9d3 100644
--- a/drivers/media/pci/saa7134/saa7134-tvaudio.c
+++ b/drivers/media/pci/saa7134/saa7134-tvaudio.c
@@ -683,7 +683,8 @@ 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;
--
2.26.2
next prev parent reply other threads:[~2020-09-02 16:17 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 16:10 [PATCH 00/38] media sparse/smatch warn fixes Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 01/38] media: tda10086: cleanup symbol_rate setting logic Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 02/38] media: v4l2-ioctl: avoid memory leaks on some time32 compat functions Mauro Carvalho Chehab
2020-09-02 16:26 ` Laurent Pinchart
2020-09-02 18:45 ` Arnd Bergmann
2020-09-03 6:01 ` Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 03/38] media: qt1010: fix usage of unititialized value Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 04/38] media: av7110_v4l: avoid a typecast Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 05/38] media: wl128x: get rid of a potential spectre issue Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 06/38] media: venus: place extern venus_fw_debug on a header file Mauro Carvalho Chehab
2020-09-10 10:45 ` Stanimir Varbanov
2020-09-02 16:10 ` [PATCH 07/38] media: tda10021: avoid casts when using symbol_rate Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 08/38] media: serial_ir: use the right type for a dma address Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 09/38] media: vivid: move the detection part out of vivid_create_instance Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 10/38] media: vivid: place the logic which disables ioctl on a separate function Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 11/38] media: vivid: move set_capabilities logic to " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 12/38] media: vivid: place dt timings init code on " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 13/38] media: vivid: move the create queues to " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 14/38] media: vivid: move the devnode creation logic " Mauro Carvalho Chehab
2020-09-02 21:57 ` kernel test robot
2020-09-03 0:31 ` kernel test robot
2020-09-02 16:10 ` [PATCH 15/38] media: vivid: fix error path Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 16/38] media: videobuf-dma-sg: number of pages should be unsigned long Mauro Carvalho Chehab
2020-09-03 7:49 ` John Hubbard
2020-09-02 16:10 ` [PATCH 17/38] media: cx25821-alsa: " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 18/38] media: cx23885-alsa: " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 19/38] media: cx88-alsa: " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 20/38] media: saa7134-alsa.c: " Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 21/38] media: dvb-ttusb-budget: don't use stack for USB transfers Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 22/38] media: dvb-ttusb-budget: cleanup printk logic Mauro Carvalho Chehab
2020-09-02 16:10 ` Mauro Carvalho Chehab [this message]
2020-09-02 16:10 ` [PATCH 24/38] media: atomisp: fix casts at atomisp_compat_ioctl32.c Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 25/38] media: atomisp: get rid of some unused code Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 26/38] media: atomisp: cleanup ifdefs from ia_css_debug.c Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 27/38] media: atomisp: get rid of version-dependent globals Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 28/38] media: atomisp: get rid of isys_dma.h and isys_dma_local.h Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 29/38] media: atomisp: get rid of ibuf_ctrl abstraction Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 30/38] media: atomisp: don't check for ISP version for includes Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 31/38] media: atomisp: unify INPUT error return type Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 32/38] media: atomisp: de-duplicate names at *_input_system_global.h Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 33/38] media: atomisp: reorder functions at pixelgen_private.h Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 34/38] media: atomisp: remove compile-time tests from input_system_global.h Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 35/38] media: atomisp: fix some bad indents Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 36/38] media: atomisp: csi_rx.c: add a missing includes Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 37/38] media: atomisp: atomisp_gmin_platform: check before use Mauro Carvalho Chehab
2020-09-02 16:10 ` [PATCH 38/38] media: atomisp: cleanup isys_irq headers Mauro Carvalho Chehab
2020-09-07 10:17 ` [PATCH 00/38] media sparse/smatch warn fixes Hans Verkuil
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