diff options
| author | Juergen Gross <jgross@suse.com> | 2016-10-31 14:58:41 +0100 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2016-11-07 13:55:32 +0100 |
| commit | eaf46e181ec3cc3b6eafdbe8e30fb5a03ebbde68 (patch) | |
| tree | 6e08254aba639d64b440630715e436e4779b5f04 /drivers/video | |
| parent | 1080b38db49f7e3075aa9cd5a87f1587282cc0b0 (diff) | |
| download | linux-eaf46e181ec3cc3b6eafdbe8e30fb5a03ebbde68.tar.bz2 | |
xen: make use of xenbus_read_unsigned() in xen-fbfront
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>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/xen-fbfront.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/video/fbdev/xen-fbfront.c b/drivers/video/fbdev/xen-fbfront.c index 0567d517eed3..d0115a7af0a9 100644 --- a/drivers/video/fbdev/xen-fbfront.c +++ b/drivers/video/fbdev/xen-fbfront.c @@ -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: |