Patch "powerpc: 8xx: fix a return value error in mpc8xx_pic_init" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

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

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     powerpc-8xx-fix-a-return-value-error-in-mpc8xx_pic_i.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 43bd5d3b8c2b94573782d491d776140ec97966e8
Author: Hangyu Hua <hbh25y@xxxxxxxxx>
Date:   Wed Feb 23 15:02:23 2022 +0800

    powerpc: 8xx: fix a return value error in mpc8xx_pic_init
    
    [ Upstream commit 3fd46e551f67f4303c3276a0d6cd20baf2d192c4 ]
    
    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: cc76404feaed ("powerpc/8xx: Fix possible device node reference leak")
    Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
    Reviewed-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
    Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220223070223.26845-1-hbh25y@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/powerpc/platforms/8xx/pic.c b/arch/powerpc/platforms/8xx/pic.c
index f2ba837249d6..04a6abf14c29 100644
--- a/arch/powerpc/platforms/8xx/pic.c
+++ b/arch/powerpc/platforms/8xx/pic.c
@@ -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;