[PATCH -next 07/11] drm/vmwgfx: Use kasprintf

From: Thomas Hellstrom <thellstrom@vmware.com>
To: dri-devel@lists.freedesktop.org, linux-graphics-maintainer@vmware.com
Subject: [PATCH -next 07/11] drm/vmwgfx: Use kasprintf
Date: Thu, 22 Mar 2018 11:23:48 +0100	[thread overview]
Message-ID: <20180322102352.2881-7-thellstrom@vmware.com> (raw)
In-Reply-To: <20180322102352.2881-1-thellstrom@vmware.com>

From: Himanshu Jha <himanshujha199640@gmail.com>

Use kasprintf instead of combination of kmalloc and sprintf. Also,
remove the local variables used for storing the string length as they
are not required now.

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
index 97000996b8dc..cdff99211602 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
@@ -328,7 +328,7 @@ int vmw_host_get_guestinfo(const char *guest_info_param,
 {
 	struct rpc_channel channel;
 	char *msg, *reply = NULL;
-	size_t msg_len, reply_len = 0;
+	size_t reply_len = 0;
 	int ret = 0;
 
 
@@ -338,15 +338,12 @@ int vmw_host_get_guestinfo(const char *guest_info_param,
 	if (!guest_info_param || !length)
 		return -EINVAL;
 
-	msg_len = strlen(guest_info_param) + strlen("info-get ") + 1;
-	msg = kzalloc(msg_len, GFP_KERNEL);
+	msg = kasprintf(GFP_KERNEL, "info-get %s", guest_info_param);
 	if (!msg) {
 		DRM_ERROR("Cannot allocate memory to get %s", guest_info_param);
 		return -ENOMEM;
 	}
 
-	sprintf(msg, "info-get %s", guest_info_param);
-
 	if (vmw_open_channel(&channel, RPCI_PROTOCOL_NUM) ||
 	    vmw_send_msg(&channel, msg) ||
 	    vmw_recv_msg(&channel, (void *) &reply, &reply_len) ||
@@ -388,7 +385,6 @@ int vmw_host_log(const char *log)
 {
 	struct rpc_channel channel;
 	char *msg;
-	int msg_len;
 	int ret = 0;
 
 
@@ -398,15 +394,12 @@ int vmw_host_log(const char *log)
 	if (!log)
 		return ret;
 
-	msg_len = strlen(log) + strlen("log ") + 1;
-	msg = kzalloc(msg_len, GFP_KERNEL);
+	msg = kasprintf(GFP_KERNEL, "log %s", log);
 	if (!msg) {
 		DRM_ERROR("Cannot allocate memory for log message\n");
 		return -ENOMEM;
 	}
 
-	sprintf(msg, "log %s", log);
-
 	if (vmw_open_channel(&channel, RPCI_PROTOCOL_NUM) ||
 	    vmw_send_msg(&channel, msg) ||
 	    vmw_close_channel(&channel)) {
-- 
2.14.3

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