linux-kernel - [PATCH] drm/qxl: remove redundant code

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Message-Id: <20240226035926.102859-1-jiapeng.chong@linux.alibaba.com>
Date: Mon, 26 Feb 2024 11:59:26 +0800
From: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To: airlied@...hat.com
Cc: kraxel@...hat.com,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	daniel@...ll.ch,
	virtualization@...ts.linux.dev,
	spice-devel@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
	Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] drm/qxl: remove redundant code

Variable num_relocs is not effectively used, so delete it. Having two
labels seems somewhat redundant; the 'out_free_release' can be removed,
leaving 'out_free_bos'.

drivers/gpu/drm/qxl/qxl_ioctl.c:148:14: warning: variable 'num_relocs' set but not used.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=8316
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/gpu/drm/qxl/qxl_ioctl.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
index dd0f834d881c..c1dd5709d37a 100644
--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
@@ -145,7 +145,7 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 	struct qxl_release *release;
 	struct qxl_bo *cmd_bo;
 	void *fb_cmd;
-	int i, ret, num_relocs;
+	int i, ret;
 	int unwritten;
 
 	switch (cmd->type) {
@@ -196,11 +196,10 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 	if (unwritten) {
 		DRM_ERROR("got unwritten %d\n", unwritten);
 		ret = -EFAULT;
-		goto out_free_release;
+		goto out_free_bos;
 	}
 
 	/* fill out reloc info structs */
-	num_relocs = 0;
 	for (i = 0; i < cmd->relocs_num; ++i) {
 		struct drm_qxl_reloc reloc;
 		struct drm_qxl_reloc __user *u = u64_to_user_ptr(cmd->relocs);
@@ -230,7 +229,6 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 			reloc_info[i].dst_bo = cmd_bo;
 			reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
 		}
-		num_relocs++;
 
 		/* reserve and validate the reloc dst bo */
 		if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) {
@@ -261,7 +259,6 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 	ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
 
 out_free_bos:
-out_free_release:
 	if (ret)
 		qxl_release_free(qdev, release);
 out_free_reloc:
-- 
2.20.1.7.g153144c