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From: Sui Jingfeng <sui.jingfeng@linux.dev>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>,
	Russell King <linux+etnaviv@armlinux.org.uk>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Maxime Ripard <mripard@kernel.org>,
	dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	Sui Jingfeng <sui.jingfeng@linux.dev>,
	Christian Gmeiner <cgmeiner@igalia.com>
Subject: [PATCH v2 2/5] drm/etnaviv: Use 'unsigned' type to count the number of pages
Date: Sun,  8 Sep 2024 20:11:04 +0800	[thread overview]
Message-ID: <20240908121107.328740-2-sui.jingfeng@linux.dev> (raw)
In-Reply-To: <20240908121107.328740-1-sui.jingfeng@linux.dev>

The unpin_user_pages() function takes an 'unsigned long' argument to
store the number of userspace pages, and the struct drm_gem_object::size
is a size_t type. The number of pages can not be negative, hence, use
'unsigned' variable to count the number of pages.

Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
---

 v2: Pick up tags and improve commit message

 drivers/gpu/drm/etnaviv/etnaviv_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index 5ffc31f32ac9..4ce3d2ea7767 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -686,7 +686,7 @@ static void etnaviv_gem_userptr_release(struct etnaviv_gem_object *etnaviv_obj)
 		kfree(etnaviv_obj->sgt);
 	}
 	if (etnaviv_obj->pages) {
-		int npages = etnaviv_obj->base.size >> PAGE_SHIFT;
+		unsigned int npages = etnaviv_obj->base.size >> PAGE_SHIFT;
 
 		unpin_user_pages(etnaviv_obj->pages, npages);
 		kvfree(etnaviv_obj->pages);
-- 
2.43.0


  reply	other threads:[~2024-09-08 12:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-08 12:11 [PATCH v2 1/5] drm/etnaviv: Use unsigned type to count the number of pages Sui Jingfeng
2024-09-08 12:11 ` Sui Jingfeng [this message]
2024-09-08 12:11 ` [PATCH v2 3/5] drm/etnaviv: Drop the <linux/pm_runtime.h> header Sui Jingfeng
2024-09-08 12:11 ` [PATCH v2 4/5] drm/etnaviv: Fix missing mutex_destroy() Sui Jingfeng
2024-09-08 12:11 ` [PATCH v2 5/5] drm/etnaviv: Replace the '&pdev->dev' with 'dev' Sui Jingfeng
2024-10-28 15:54 ` [PATCH v2 1/5] drm/etnaviv: Use unsigned type to count the number of pages Lucas Stach

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