net: micrel: Fix lan8841_config_intr after getting out of sleep mode
[ Upstream commit 4fb67904 ] When the interrupt is enabled, the function lan8841_config_intr tries to clear any pending interrupts by reading the interrupt status, then checks the return value for errors and then continue to enable the interrupt. It has been seen that once the system gets out of sleep mode, the interrupt status has the value 0x400 meaning that the PHY detected that the link was in low power. That is correct value but the problem is that the check is wrong. We try to check for errors but we return an error also in this case which is not an error. Therefore fix this by returning only when there is an error. Fixes: a8f1a19d ("net: micrel: Add support for lan8841 PHY") Signed-off-by:Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by:
Suman Ghosh <sumang@marvell.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20240524085350.359812-1-horatiu.vultur@microchip.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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