Re: [PATCH net v3 1/4] net: dsa: microchip: common: Fix checks on irq_find_mapping()
From: Andrew Lunn <andrew@lunn.ch>
Date: 2025-11-14 14:51:13
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On Fri, Nov 14, 2025 at 08:20:20AM +0100, Bastien Curutchet (Schneider Electric) wrote:
irq_find_mapping() returns a positive IRQ number or 0 if no IRQ is found
but it never returns a negative value. However, on each
irq_find_mapping() call, we verify that the returned value isn't
negative.
Fix the irq_find_mapping() checks to enter error paths when 0 is
returned. Return -EINVAL in such cases.
Fixes: c9cd961c0d43 ("net: dsa: microchip: lan937x: add interrupt support for port phy link")
Signed-off-by: Bastien Curutchet (Schneider Electric) <redacted>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew