linux-kernel - [PATCH v2 2/2] drm/msm: Leave inuse count intact on map failure

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Message-Id: <1600786527-7343-2-git-send-email-akhilpo@codeaurora.org>
Date:   Tue, 22 Sep 2020 20:25:27 +0530
From:   Akhil P Oommen <akhilpo@...eaurora.org>
To:     freedreno@...ts.freedesktop.org
Cc:     dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jcrouse@...eaurora.org,
        mka@...omium.org, jonathan@...ek.ca, robdclark@...il.com,
        dianders@...omium.org
Subject: [PATCH v2 2/2] drm/msm: Leave inuse count intact on map failure

Leave the inuse count intact on map failure to keep the accounting
accurate.

Signed-off-by: Akhil P Oommen <akhilpo@...eaurora.org>
---
 drivers/gpu/drm/msm/msm_gem_vma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c
index 80a8a26..f914ddb 100644
--- a/drivers/gpu/drm/msm/msm_gem_vma.c
+++ b/drivers/gpu/drm/msm/msm_gem_vma.c
@@ -88,8 +88,10 @@ msm_gem_map_vma(struct msm_gem_address_space *aspace,
 		ret = aspace->mmu->funcs->map(aspace->mmu, vma->iova, sgt,
 				size, prot);
 
-	if (ret)
+	if (ret) {
 		vma->mapped = false;
+		vma->inuse--;
+	}
 
 	return ret;
 }
-- 
2.7.4