renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 04:03:58 +08:00
Code

xen: make use of xenbus_read_unsigned() in xen-fbfront

Browse Source 
Use xenbus_read_unsigned() instead of xenbus_scanf() when possible.
This requires to change the type of the reads from int to unsigned,
but these cases have been wrong before: negative values are not allowed
for the modified cases.

Cc: tomi.valkeinen@ti.com
Cc: linux-fbdev@vger.kernel.org

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Juergen Gross 2016-10-31 14:58:41 +01:00
parent 1080b38db4
commit eaf46e181e
1 changed files with 4 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/video/fbdev/xen-fbfront.c
View File

@ -633,7 +633,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
enum xenbus_state backend_state)
{
struct xenfb_info *info = dev_get_drvdata(&dev->dev);
int val;
switch (backend_state) {
case XenbusStateInitialising:
@ -657,16 +656,12 @@ InitWait:
if (dev->state != XenbusStateConnected)
goto InitWait; /* no InitWait seen yet, fudge it */
if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
"request-update", "%d", &val) < 0)
val = 0;
if (val)
if (xenbus_read_unsigned(info->xbdev->otherend,
"request-update", 0))
info->update_wanted = 1;
if (xenbus_scanf(XBT_NIL, dev->otherend,
"feature-resize", "%d", &val) < 0)
val = 0;
info->feature_resize = val;
info->feature_resize = xenbus_read_unsigned(dev->otherend,
"feature-resize", 0);
break;
case XenbusStateClosed: