linux-kernel - [PATCH] drm/ttm: add __user annotation in radeon_ttm_vram

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Message-Id: <20201024004706.24518-1-linux@rasmusvillemoes.dk>
Date:   Sat, 24 Oct 2020 02:47:06 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        kernel test robot <lkp@...el.com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/ttm: add __user annotation in radeon_ttm_vram_read

Keep sparse happy by preserving the __user annotation when casting.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---

kernel test robot has already started spamming me due to 9c5743dff. If
I don't fix those warnings I'll keep getting those emails for
months, so let me do the easy ones.


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

diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 36150b7f31a90aa1eece..ecfe88b0a35d8f317712 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -1005,7 +1005,7 @@ static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf,
 		value = RREG32(RADEON_MM_DATA);
 		spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
 
-		r = put_user(value, (uint32_t *)buf);
+		r = put_user(value, (uint32_t __user *)buf);
 		if (r)
 			return r;
 
-- 
2.23.0