xen: make use of xenbus_read_unsigned() in xen-scsifront
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>
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@ -1060,13 +1060,9 @@ static void scsifront_read_backend_params(struct xenbus_device *dev,
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struct vscsifrnt_info *info)
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struct vscsifrnt_info *info)
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{
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{
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unsigned int sg_grant, nr_segs;
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unsigned int sg_grant, nr_segs;
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int ret;
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struct Scsi_Host *host = info->host;
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struct Scsi_Host *host = info->host;
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ret = xenbus_scanf(XBT_NIL, dev->otherend, "feature-sg-grant", "%u",
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sg_grant = xenbus_read_unsigned(dev->otherend, "feature-sg-grant", 0);
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&sg_grant);
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if (ret != 1)
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sg_grant = 0;
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nr_segs = min_t(unsigned int, sg_grant, SG_ALL);
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nr_segs = min_t(unsigned int, sg_grant, SG_ALL);
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nr_segs = max_t(unsigned int, nr_segs, VSCSIIF_SG_TABLESIZE);
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nr_segs = max_t(unsigned int, nr_segs, VSCSIIF_SG_TABLESIZE);
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nr_segs = min_t(unsigned int, nr_segs,
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nr_segs = min_t(unsigned int, nr_segs,
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