linux-kernel - [PATCH v3 1/6] iommu/msm: Add missing __disable

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Date:   Thu, 15 Sep 2022 00:56:08 -0700
From:   Nicolin Chen <nicolinc@...dia.com>
To:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <konrad.dybcio@...ainline.org>, <joro@...tes.org>,
        <will@...nel.org>, <robin.murphy@....com>,
        <sricharan@...eaurora.org>
CC:     <jgg@...dia.com>, <kevin.tian@...el.com>,
        <linux-arm-msm@...r.kernel.org>, <iommu@...ts.linux.dev>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 1/6] iommu/msm: Add missing __disable_clocks calls

The clock is not symmetrically disabled in the error-out routines.

Fixes: 109bd48ea2e1 ("iommu/msm: Add DT adaptation")
Cc: stable@...r.kernel.org
Cc: Sricharan R <sricharan@...eaurora.org>
Cc: Andy Gross <agross@...nel.org>
Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Konrad Dybcio <konrad.dybcio@...ainline.org>
Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
 drivers/iommu/msm_iommu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index 6a24aa804ea3..a7d41ba4a47b 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -418,6 +418,7 @@ static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
 			list_for_each_entry(master, &iommu->ctx_list, list) {
 				if (master->num) {
 					dev_err(dev, "domain already attached");
+					__disable_clocks(iommu);
 					ret = -EEXIST;
 					goto fail;
 				}
@@ -425,6 +426,7 @@ static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
 					msm_iommu_alloc_ctx(iommu->context_map,
 							    0, iommu->ncb);
 				if (IS_ERR_VALUE(master->num)) {
+					__disable_clocks(iommu);
 					ret = -ENODEV;
 					goto fail;
 				}
-- 
2.17.1