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From: Daniel Scheller <d.scheller.oss@gmail.com>
To: linux-media@vger.kernel.org, mchehab@kernel.org,
	mchehab@s-opensource.com
Cc: jasmin@anw.at, d_spingler@gmx.de, rjkm@metzlerbros.de
Subject: [PATCH 11/14] [media] ddbridge: fix impossible condition warning
Date: Sun,  9 Jul 2017 21:42:18 +0200	[thread overview]
Message-ID: <20170709194221.10255-12-d.scheller.oss@gmail.com> (raw)
In-Reply-To: <20170709194221.10255-1-d.scheller.oss@gmail.com>

From: Daniel Scheller <d.scheller@gmx.net>

Smatch and gcc complained:

  drivers/media/pci/ddbridge/ddbridge-core.c:3491 bpsnr_show() warn: impossible condition '(snr[0] == 255) => ((-128)-127 == 255)'

  drivers/media/pci/ddbridge/ddbridge-core.c: In function ‘bpsnr_show’:
  drivers/media/pci/ddbridge/ddbridge-core.c:3491:13: warning: comparison is always false due to limited range of data type [-Wtype-limits]

Fix this by changing the type of snr to unsigned char.

Cc: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
---
 drivers/media/pci/ddbridge/ddbridge-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c
index 3756b9961fcd..6896cd1f3a96 100644
--- a/drivers/media/pci/ddbridge/ddbridge-core.c
+++ b/drivers/media/pci/ddbridge/ddbridge-core.c
@@ -3251,7 +3251,7 @@ static ssize_t bpsnr_show(struct device *device,
 			 struct device_attribute *attr, char *buf)
 {
 	struct ddb *dev = dev_get_drvdata(device);
-	char snr[32];
+	unsigned char snr[32];
 
 	if (!dev->i2c_num)
 		return 0;
-- 
2.13.0

  parent reply	other threads:[~2017-07-09 19:42 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-09 19:42 [PATCH 00/14] ddbridge: bump to ddbridge-0.9.29 Daniel Scheller
2017-07-09 19:42 ` [PATCH 01/14] [media] ddbridge: move/reorder functions Daniel Scheller
2017-07-09 19:42 ` [PATCH 02/14] [media] ddbridge: split code into multiple files Daniel Scheller
2017-07-09 19:42 ` [PATCH 03/14] [media] ddbridge: bump ddbridge code to version 0.9.29 Daniel Scheller
2017-07-09 19:42 ` [PATCH 04/14] [media] ddbridge: split I/O related functions off from ddbridge.h Daniel Scheller
2017-07-09 19:42 ` [PATCH 05/14] [media] ddbridge: split off IRQ handling Daniel Scheller
2017-07-09 19:42 ` [PATCH 06/14] [media] ddbridge: split off hardware definitions and mappings Daniel Scheller
2017-07-09 19:42 ` [PATCH 07/14] [media] ddbridge: check pointers before dereferencing Daniel Scheller
2017-07-09 19:42 ` [PATCH 08/14] [media] ddbridge: only register frontends in fe2 if fe is not NULL Daniel Scheller
2017-07-09 19:42 ` [PATCH 09/14] [media] ddbridge: fix possible buffer overflow in ddb_ports_init() Daniel Scheller
2017-07-10  8:21   ` Ralph Metzler
2017-07-10 15:32     ` Daniel Scheller
2017-07-09 19:42 ` [PATCH 10/14] [media] ddbridge: remove unreachable code Daniel Scheller
2017-07-10  8:24   ` Ralph Metzler
2017-07-10 15:34     ` Daniel Scheller
2017-07-09 19:42 ` Daniel Scheller [this message]
2017-07-09 19:42 ` [PATCH 12/14] [media] ddbridge: fix dereference before check Daniel Scheller
2017-07-09 19:42 ` [PATCH 13/14] [media] ddbridge: Kconfig option to control the MSI modparam default Daniel Scheller
2017-07-09 19:42 ` [PATCH 14/14] [media] MAINTAINERS: add entry for ddbridge Daniel Scheller
2017-07-10  8:11 ` [PATCH 00/14] ddbridge: bump to ddbridge-0.9.29 Ralph Metzler
2017-07-10 15:31   ` Daniel Scheller
2017-07-11  9:11     ` Ralph Metzler
2017-07-11 15:30       ` Daniel Scheller
2017-07-20 15:24         ` Mauro Carvalho Chehab
2017-07-20 18:25           ` Daniel Scheller
2017-07-20 21:16             ` Jasmin J.
2017-07-15 20:37 ` Richard Scobie
2017-07-23 12:16 ` Daniel Scheller

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