ata: libahci_platform: fix IRQ check
authorSergey Shtylyov <s.shtylyov@omprussia.ru>
Mon, 15 Mar 2021 20:15:06 +0000 (23:15 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 14 May 2021 07:50:24 +0000 (09:50 +0200)
commit4f53ef0f7841b015c39698590b39fc98b209cbbc
tree8a43bcf9563dc75dd6cce087d2d3228dd2161e6d
parent6187fa25029442a9379f3c58828aae00cda30d9a
ata: libahci_platform: fix IRQ check

[ Upstream commit b30d0040f06159de97ad9c0b1536f47250719d7d ]

Iff platform_get_irq() returns 0, ahci_platform_init_host() would return 0
early (as if the call was successful). Override IRQ0 with -EINVAL instead
as the 'libata' regards 0 as "no IRQ" (thus polling) anyway...

Fixes: c034640a32f8 ("ata: libahci: properly propagate return value of platform_get_irq()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Link: https://lore.kernel.org/r/4448c8cc-331f-2915-0e17-38ea34e251c8@omprussia.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/ata/libahci_platform.c