From: Deepak R Varma <drv@mailo.com>
To: Thierry Reding <thierry.reding@gmail.com>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Saurabh Singh Sengar <ssengar@microsoft.com>,
Praveen Kumar <kumarpraveen@linux.microsoft.com>,
Deepak R Varma <drv@mailo.com>
Subject: [PATCH] gpu: host1x: No need for Null pointer check before kfree
Date: Wed, 28 Dec 2022 00:17:16 +0530 [thread overview]
Message-ID: <Y6s9tOVk5A8NFmyH@qemulion> (raw)
kfree() & vfree() internally performs NULL check on the pointer handed
to it and take no action if it indeed is NULL. Hence there is no need
for a pre-check of the memory pointer before handing it to
kfree()/vfree().
Issue reported by ifnullfree.cocci Coccinelle semantic patch script.
Signed-off-by: Deepak R Varma <drv@mailo.com>
---
drivers/gpu/host1x/fence.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/host1x/fence.c b/drivers/gpu/host1x/fence.c
index df428bcbae69..42498902947f 100644
--- a/drivers/gpu/host1x/fence.c
+++ b/drivers/gpu/host1x/fence.c
@@ -93,8 +93,7 @@ static void host1x_syncpt_fence_release(struct dma_fence *f)
{
struct host1x_syncpt_fence *sf = to_host1x_fence(f);
- if (sf->waiter)
- kfree(sf->waiter);
+ kfree(sf->waiter);
dma_fence_free(f);
}
--
2.34.1
reply other threads:[~2022-12-27 18:47 UTC|newest]
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