Patch "powerpc/btext: add missing of_node_put" has been added to the 5.10-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    powerpc/btext: add missing of_node_put

to the 5.10-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-btext-add-missing-of_node_put.patch
and it can be found in the queue-5.10 subdirectory.

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



commit f4502ac7092b28a471ed795c9fabaf48e4de0f3d
Author: Julia Lawall <Julia.Lawall@xxxxxxx>
Date:   Fri Nov 20 20:33:23 2015 +0000

    powerpc/btext: add missing of_node_put
    
    [ Upstream commit a1d2b210ffa52d60acabbf7b6af3ef7e1e69cda0 ]
    
    for_each_node_by_type performs an of_node_get on each iteration, so
    a break out of the loop requires an of_node_put.
    
    A simplified version of the semantic patch that fixes this problem is as
    follows (http://coccinelle.lip6.fr):
    
    // <smpl>
    @@
    local idexpression n;
    expression e;
    @@
    
     for_each_node_by_type(n,...) {
       ...
    (
       of_node_put(n);
    |
       e = n
    |
    +  of_node_put(n);
    ?  break;
    )
       ...
     }
    ... when != n
    // </smpl>
    
    Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
    Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/1448051604-25256-6-git-send-email-Julia.Lawall@xxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 803c2a45b22ac..1cffb5e7c38d6 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -241,8 +241,10 @@ int __init btext_find_display(int allow_nonstdout)
 			rc = btext_initialize(np);
 			printk("result: %d\n", rc);
 		}
-		if (rc == 0)
+		if (rc == 0) {
+			of_node_put(np);
 			break;
+		}
 	}
 	return rc;
 }