net: phy: phy_device: Prevent nullptr exceptions on ISR

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[ Upstream commit 61c8187281 ]

If phydev->irq is set unconditionally, check
for valid interrupt handler or fall back to polling mode to prevent
nullptr exceptions in interrupt service routine.

Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240129135734.18975-2-andre.werner@systec-electronic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Andre Werner 2024-01-29 14:55:04 +01:00 • committed by Greg Kroah-Hartman

parent 2485beea14

commit 7a71f61ebf

1 changed files with 8 additions and 5 deletions

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drivers/net/phy/phy_device.c

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