Commits
Robert Hancock committed c7bf2df4504
net: sfp: add mutex to prevent concurrent state checks [ Upstream commit 2158e856f56bb762ef90f3ec244d41a519826f75 ] sfp_check_state can potentially be called by both a threaded IRQ handler and delayed work. If it is concurrently called, it could result in incorrect state management. Add a st_mutex to protect the state - this lock gets taken outside of code that checks and handle state changes, and the existing sm_mutex nests inside of it. Suggested-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Robert Hancock <hancock@sedsystems.ca> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>