From eaf46e181ec3cc3b6eafdbe8e30fb5a03ebbde68 Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Mon, 31 Oct 2016 14:58:41 +0100 Subject: [PATCH] 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 Acked-by: David Vrabel --- drivers/video/fbdev/xen-fbfront.c | 13 ++++--------- 1 file 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: -- 2.20.1