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authorJuergen Gross <jgross@suse.com>2016-10-31 14:58:41 +0100
committerJuergen Gross <jgross@suse.com>2016-11-07 13:55:34 +0100
commit4e81f1caa7ff77f7fd31bd31f84b1a0dcfc8184e (patch)
tree8d0deb9c42e7411034b940f31e06b4b8c2310023 /drivers/xen
parenteaf46e181ec3cc3b6eafdbe8e30fb5a03ebbde68 (diff)
downloadlinux-4e81f1caa7ff77f7fd31bd31f84b1a0dcfc8184e.tar.bz2
xen: make use of xenbus_read_unsigned() in xen-pciback
Use xenbus_read_unsigned() instead of xenbus_scanf() when possible. This requires to change the type of the read from int to unsigned, but this case has been wrong before: negative values are not allowed for the modified case. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xen-pciback/xenbus.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 5ce878c51d03..3f0aee0a068b 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -362,7 +362,7 @@ static int xen_pcibk_reconfigure(struct xen_pcibk_device *pdev)
int err = 0;
int num_devs;
int domain, bus, slot, func;
- int substate;
+ unsigned int substate;
int i, len;
char state_str[64];
char dev_str[64];
@@ -395,10 +395,8 @@ static int xen_pcibk_reconfigure(struct xen_pcibk_device *pdev)
"configuration");
goto out;
}
- err = xenbus_scanf(XBT_NIL, pdev->xdev->nodename, state_str,
- "%d", &substate);
- if (err != 1)
- substate = XenbusStateUnknown;
+ substate = xenbus_read_unsigned(pdev->xdev->nodename, state_str,
+ XenbusStateUnknown);
switch (substate) {
case XenbusStateInitialising: