From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Aleksandr Aprelkov <aaprelkov@usergate.com>,
Will Deacon <will@kernel.org>, Sasha Levin <sashal@kernel.org>,
joro@8bytes.org, iommu@lists.linux-foundation.org
Subject: [PATCH AUTOSEL 6.1 2/2] iommu/arm-smmu-v3: Free MSIs in case of ENOMEM
Date: Mon, 27 May 2024 22:19:08 -0400 [thread overview]
Message-ID: <20240528021909.3905362-2-sashal@kernel.org> (raw)
In-Reply-To: <20240528021909.3905362-1-sashal@kernel.org>
From: Aleksandr Aprelkov <aaprelkov@usergate.com>
[ Upstream commit 80fea979dd9d48d67c5b48d2f690c5da3e543ebd ]
If devm_add_action() returns -ENOMEM, then MSIs are allocated but not
not freed on teardown. Use devm_add_action_or_reset() instead to keep
the static analyser happy.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Aleksandr Aprelkov <aaprelkov@usergate.com>
Link: https://lore.kernel.org/r/20240403053759.643164-1-aaprelkov@usergate.com
[will: Tweak commit message, remove warning message]
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 82f100e591b5a..45b43f729f895 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3199,7 +3199,7 @@ static void arm_smmu_setup_msis(struct arm_smmu_device *smmu)
smmu->priq.q.irq = msi_get_virq(dev, PRIQ_MSI_INDEX);
/* Add callback to free MSIs on teardown */
- devm_add_action(dev, arm_smmu_free_msis, dev);
+ devm_add_action_or_reset(dev, arm_smmu_free_msis, dev);
}
static void arm_smmu_setup_unique_irqs(struct arm_smmu_device *smmu)
--
2.43.0
prev parent reply other threads:[~2024-05-28 2:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 2:19 [PATCH AUTOSEL 6.1 1/2] power: supply: cros_usbpd: provide ID table for avoiding fallback match Sasha Levin
2024-05-28 2:19 ` Sasha Levin [this message]
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