From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Julia Lawall <Julia.Lawall@lip6.fr>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 5.15 04/44] powerpc/cell: add missing of_node_put
Date: Mon, 17 Jan 2022 12:00:47 -0500 [thread overview]
Message-ID: <20220117170127.1471115-4-sashal@kernel.org> (raw)
In-Reply-To: <20220117170127.1471115-1-sashal@kernel.org>
From: Julia Lawall <Julia.Lawall@lip6.fr>
[ Upstream commit a841fd009e51c8c0a8f07c942e9ab6bb48da8858 ]
for_each_node_by_name 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,e1;
local idexpression n;
@@
for_each_node_by_name(n, e1) {
... when != of_node_put(n)
when != e = n
(
return n;
|
+ of_node_put(n);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1448051604-25256-7-git-send-email-Julia.Lawall@lip6.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/platforms/cell/iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index fa08699aedeb8..d32f24de84798 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -977,6 +977,7 @@ static int __init cell_iommu_fixed_mapping_init(void)
if (hbase < dbase || (hend > (dbase + dsize))) {
pr_debug("iommu: hash window doesn't fit in"
"real DMA window\n");
+ of_node_put(np);
return -1;
}
}
--
2.34.1
next prev parent reply other threads:[~2022-01-17 17:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220117170127.1471115-1-sashal@kernel.org>
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 02/44] powerpc/6xx: add missing of_node_put Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 03/44] powerpc/powernv: " Sasha Levin
2022-01-17 17:00 ` Sasha Levin [this message]
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 05/44] powerpc/btext: " Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 06/44] powerpc/watchdog: Fix missed watchdog reset due to memory ordering race Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 07/44] ASoC: imx-hdmi: add put_device() after of_find_device_by_node() Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 09/44] powerpc/smp: Move setup_profiling_timer() under CONFIG_PROFILING Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 12/44] powerpc/powermac: Add missing lockdep_register_key() Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 13/44] KVM: PPC: Book3S: Suppress warnings when allocating too big memory slots Sasha Levin
2022-01-17 17:00 ` [PATCH AUTOSEL 5.15 14/44] KVM: PPC: Book3S: Suppress failed alloc warning in H_COPY_TOFROM_GUEST Sasha Levin
2022-01-17 17:01 ` [PATCH AUTOSEL 5.15 24/44] powerpc/40x: Map 32Mbytes of memory at startup Sasha Levin
2022-01-17 17:01 ` [PATCH AUTOSEL 5.15 25/44] selftests/powerpc/spectre_v2: Return skip code when miss_percent is high Sasha Levin
2022-01-17 17:01 ` [PATCH AUTOSEL 5.15 26/44] powerpc: handle kdump appropriately with crash_kexec_post_notifiers option Sasha Levin
2022-01-17 17:01 ` [PATCH AUTOSEL 5.15 27/44] powerpc/fadump: Fix inaccurate CPU state info in vmcore generated with panic Sasha Levin
2022-01-17 17:01 ` [PATCH AUTOSEL 5.15 33/44] selftests/powerpc: Add a test of sigreturning to the kernel Sasha Levin
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