Commit 4ccab178 authored Feb 27, 2019 by Andy Shevchenko Committed by Greg Kroah-Hartman Dec 05, 2019

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>

parent b32dc79a

include/linux/netdevice.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)