[PATCH v2] drm/amdgpu: fix overflowed array index read warning

[Tim Huang]

From: Tim Huang <Tim.Huang at amd.com>

Clear warning that cast operation might have overflowed.

v2: keep reverse xmas tree order to declare "int r;" (Christian)

Signed-off-by: Tim Huang <Tim.Huang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 06f0a6534a94..8cf60acb2970 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -473,8 +473,8 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 					size_t size, loff_t *pos)
 {
 	struct amdgpu_ring *ring = file_inode(f)->i_private;
-	int r, i;
 	uint32_t value, result, early[3];
+	int r;
 
 	if (*pos & 3 || size & 3)
 		return -EINVAL;
@@ -485,7 +485,7 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 		early[0] = amdgpu_ring_get_rptr(ring) & ring->buf_mask;
 		early[1] = amdgpu_ring_get_wptr(ring) & ring->buf_mask;
 		early[2] = ring->wptr & ring->buf_mask;
-		for (i = *pos / 4; i < 3 && size; i++) {
+		for (loff_t i = *pos / 4; i < 3 && size; i++) {
 			r = put_user(early[i], (uint32_t *)buf);
 			if (r)
 				return r;
-- 
2.39.2