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

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Use xenbus_read_unsigned() instead of xenbus_scanf() when possible.

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 58faf07b76
commit 1080b38db4
1 changed files with 1 additions and 5 deletions
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6
drivers/scsi/xen-scsifront.c
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@ -1060,13 +1060,9 @@ static void scsifront_read_backend_params(struct xenbus_device *dev,
struct vscsifrnt_info *info)
{
unsigned int sg_grant, nr_segs;
int ret;
struct Scsi_Host *host = info->host;
ret = xenbus_scanf(XBT_NIL, dev->otherend, "feature-sg-grant", "%u",
&sg_grant);
if (ret != 1)
sg_grant = 0;
sg_grant = xenbus_read_unsigned(dev->otherend, "feature-sg-grant", 0);
nr_segs = min_t(unsigned int, sg_grant, SG_ALL);
nr_segs = max_t(unsigned int, nr_segs, VSCSIIF_SG_TABLESIZE);
nr_segs = min_t(unsigned int, nr_segs,