From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, xen-devel@lists.xen.org
Cc: Juergen Gross <jgross@suse.com>,
boris.ostrovsky@oracle.com, tomi.valkeinen@ti.com,
david.vrabel@citrix.com, linux-fbdev@vger.kernel.org
Subject: [PATCH 10/12] xen: make use of xenbus_read_unsigned() in xen-fbfront
Date: Mon, 31 Oct 2016 17:48:28 +0100 [thread overview]
Message-ID: <1477932510-28594-11-git-send-email-jgross@suse.com> (raw)
In-Reply-To: <1477932510-28594-1-git-send-email-jgross@suse.com>
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>
---
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 0567d51..d0115a7 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 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
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:
--
2.6.6
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next prev parent reply other threads:[~2016-10-31 16:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1477932510-28594-1-git-send-email-jgross@suse.com>
2016-10-31 16:48 ` [PATCH 01/12] xen: introduce xenbus_read_unsigned() Juergen Gross
2016-11-07 11:02 ` David Vrabel
2016-10-31 16:48 ` [PATCH 02/12] xen: make use of xenbus_read_unsigned() in xen-blkback Juergen Gross
2016-10-31 16:48 ` [PATCH 03/12] xen: make use of xenbus_read_unsigned() in xen-blkfront Juergen Gross
2016-10-31 16:48 ` [PATCH 04/12] xen: make use of xenbus_read_unsigned() in xen-tpmfront Juergen Gross
2016-11-02 10:34 ` Jarkko Sakkinen
2016-11-04 4:26 ` Jarkko Sakkinen
2016-10-31 16:48 ` [PATCH 05/12] xen: make use of xenbus_read_unsigned() in xen-kbdfront Juergen Gross
2016-10-31 16:48 ` [PATCH 06/12] xen: make use of xenbus_read_unsigned() in xen-netback Juergen Gross
2016-10-31 16:48 ` [PATCH 07/12] xen: make use of xenbus_read_unsigned() in xen-netfront Juergen Gross
2016-10-31 16:48 ` [PATCH 08/12] xen: make use of xenbus_read_unsigned() in xen-pcifront Juergen Gross
2016-10-31 16:48 ` [PATCH 09/12] xen: make use of xenbus_read_unsigned() in xen-scsifront Juergen Gross
2016-10-31 16:48 ` Juergen Gross [this message]
2016-10-31 16:48 ` [PATCH 11/12] xen: make use of xenbus_read_unsigned() in xen-pciback Juergen Gross
2016-10-31 16:48 ` [PATCH 12/12] xen: make use of xenbus_read_unsigned() in xenbus Juergen Gross
2016-10-31 17:08 ` [PATCH 00/12] xen: add common function for reading optional value David Miller
2016-11-01 4:33 ` Juergen Gross
[not found] ` <1477932510-28594-9-git-send-email-jgross@suse.com>
2016-10-31 18:18 ` [PATCH 08/12] xen: make use of xenbus_read_unsigned() in xen-pcifront Bjorn Helgaas
[not found] ` <1477932510-28594-7-git-send-email-jgross@suse.com>
2016-11-01 9:42 ` [PATCH 06/12] xen: make use of xenbus_read_unsigned() in xen-netback Paul Durrant
2016-11-07 11:08 ` [PATCH 00/12] xen: add common function for reading optional value David Vrabel
[not found] ` <8d314b86-4a28-5628-2a79-842a2fafc4c1@citrix.com>
2016-11-07 16:20 ` Jarkko Sakkinen
[not found] ` <1477932510-28594-6-git-send-email-jgross@suse.com>
2016-11-09 0:29 ` [PATCH 05/12] xen: make use of xenbus_read_unsigned() in xen-kbdfront Dmitry Torokhov
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