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Date: Mon, 17 Jan 2022 12:07:09 -0500 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Julia Lawall <Julia.Lawall@...6.fr>, Michael Ellerman <mpe@...erman.id.au>, Sasha Levin <sashal@...nel.org>, maz@...nel.org, nick.child@....com, linuxppc-dev@...ts.ozlabs.org Subject: [PATCH AUTOSEL 4.9 01/13] powerpc/6xx: add missing of_node_put From: Julia Lawall <Julia.Lawall@...6.fr> [ Upstream commit f6e82647ff71d427d4148964b71f239fba9d7937 ] for_each_compatible_node 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> @@ expression e; local idexpression n; @@ @@ local idexpression n; expression e; @@ for_each_compatible_node(n,...) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr> Signed-off-by: Michael Ellerman <mpe@...erman.id.au> Link: https://lore.kernel.org/r/1448051604-25256-2-git-send-email-Julia.Lawall@lip6.fr Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/powerpc/platforms/embedded6xx/hlwd-pic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c index bf4a125faec66..db2ea6b6889de 100644 --- a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c +++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c @@ -220,6 +220,7 @@ void hlwd_pic_probe(void) irq_set_chained_handler(cascade_virq, hlwd_pic_irq_cascade); hlwd_irq_host = host; + of_node_put(np); break; } } -- 2.34.1
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