shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

net: dev: Use unsigned integer as an argument to left-shift

Browse Source 
[ Upstream commit f4d7b3e23d ]

1 << 31 is Undefined Behaviour according to the C standard.
Use U type modifier to avoid theoretical overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andy Shevchenko
2019-02-27 13:37:26 +03:00
committed by Greg Kroah-Hartman
parent b32dc79a5a
commit 4ccab1788e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/netdevice.h
View File

@@ -3790,7 +3790,7 @@ static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
if (debug_value == 0) /* no output */
return 0;
/* set low N bits */
return (1 << debug_value) - 1;
return (1U << debug_value) - 1;
}
static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)