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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2019-02-27 13:37:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 15:27:08 +0100 |
| commit | 8fe9970acd224e3f1dede7255ef4cc5c7ca68878 (patch) | |
| tree | 8b73b08dbb5dcf250486a0da655be3c12216b0f5 | |
| parent | e6bcac89af46d7077184cd900befe7678df077f2 (diff) | |
net: dev: Use unsigned integer as an argument to left-shift
[ Upstream commit f4d7b3e23d259c44f1f1c39645450680fcd935d6 ]
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>
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0b211d482c96..861b71377e5e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3298,7 +3298,7 @@ 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) |