[SCSI] bfa: Driver and BSG enhancements.

- Added a new module parameter max_xfer_size to
  set the max_sectors in the scsi_host template.
- Added logic to handle request_irq() failure so
  that msix vector resource is de-allocated immediately
  when failure happens.
- BSG enhancements to collect vHBA releated info and port log.
- Removed the workaround of incrementing the module refcnt on bsg request.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 30ca26db7846..f2bf81265ae5 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -700,6 +700,9 @@ bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
         else
                 sht = &bfad_im_vport_template;
 
+        if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
+                sht->max_sectors = max_xfer_size << 1;
+
         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 
         return scsi_host_alloc(sht, sizeof(unsigned long));
@@ -777,7 +780,7 @@ struct scsi_host_template bfad_im_scsi_host_template = {
         .cmd_per_lun = 3,
         .use_clustering = ENABLE_CLUSTERING,
         .shost_attrs = bfad_im_host_attrs,
-        .max_sectors = 0xFFFF,
+        .max_sectors = BFAD_MAX_SECTORS,
         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 };
 
@@ -799,7 +802,7 @@ struct scsi_host_template bfad_im_vport_template = {
         .cmd_per_lun = 3,
         .use_clustering = ENABLE_CLUSTERING,
         .shost_attrs = bfad_im_vport_attrs,
-        .max_sectors = 0xFFFF,
+        .max_sectors = BFAD_MAX_SECTORS,
 };
 
 bfa_status_t