linux-kernel - [PATCH] drm/via: fix assignment in if condition

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Message-Id: <20201118114021.105502-1-bernard@vivo.com>
Date:   Wed, 18 Nov 2020 03:40:19 -0800
From:   Bernard Zhao <bernard@...o.com>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Bernard Zhao <bernard@...o.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     opensource.kernel@...o.com
Subject: [PATCH] drm/via: fix assignment in if condition

Fix check_patch.pl warning:
ERROR: do not use assignment in if condition
+                       if ((HALCYON_HEADER2 == (cmd = *buf)) &&

ERROR: do not use assignment in if condition
+                       if (HALCYON_HEADER2 == (cmd = *buf))

Signed-off-by: Bernard Zhao <bernard@...o.com>
---
 drivers/gpu/drm/via/via_verifier.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/via/via_verifier.c b/drivers/gpu/drm/via/via_verifier.c
index 8d8135f424ef..3d6e3a70f318 100644
--- a/drivers/gpu/drm/via/via_verifier.c
+++ b/drivers/gpu/drm/via/via_verifier.c
@@ -1001,8 +1001,8 @@ via_verify_command_stream(const uint32_t * buf, unsigned int size,
 			state = via_check_vheader6(&buf, buf_end);
 			break;
 		case state_command:
-			if ((HALCYON_HEADER2 == (cmd = *buf)) &&
-			    supported_3d)
+			cmd = *buf;
+			if ((cmd == HALCYON_HEADER2) && supported_3d)
 				state = state_header2;
 			else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
 				state = state_header1;
@@ -1064,7 +1064,8 @@ via_parse_command_stream(struct drm_device *dev, const uint32_t *buf,
 			state = via_parse_vheader6(dev_priv, &buf, buf_end);
 			break;
 		case state_command:
-			if (HALCYON_HEADER2 == (cmd = *buf))
+			cmd = *buf;
+			if (cmd == HALCYON_HEADER2)
 				state = state_header2;
 			else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
 				state = state_header1;
-- 
2.29.0