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powerpc: 8xx: fix a return value error in mpc8xx_pic_init

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[ Upstream commit 3fd46e551f ]

mpc8xx_pic_init() should return -ENOMEM instead of 0 when
irq_domain_add_linear() return NULL. This cause mpc8xx_pics_init to continue
executing even if mpc8xx_pic_host is NULL.

Fixes: cc76404fea ("powerpc/8xx: Fix possible device node reference leak")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220223070223.26845-1-hbh25y@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hangyu Hua
2022-02-23 15:02:23 +08:00
committed by Greg Kroah-Hartman
parent 956fab99ad
commit 3c2a397849
1 changed files with 1 additions and 0 deletions
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1
arch/powerpc/platforms/8xx/pic.c
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@@ -153,6 +153,7 @@ int __init mpc8xx_pic_init(void)
if (mpc8xx_pic_host == NULL) {
printk(KERN_ERR "MPC8xx PIC: failed to allocate irq host!\n");
ret = -ENOMEM;
goto out;
}
ret = 0;