[SCSI] ipr: Fix adapter initialization failure

Since scsi core is always sending scatterlists now, remove
some code which was written with the bad assumption that
a small transfer would not be sent down in a scatterlist.
Without this fix, the ipr driver ends up sending garbage
data to the adapter following a reset, causing it to
fail the reset and take the adapter offline.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 27acf78..2bba5e5 100644 (file)
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4236,35 +4236,6 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
 }
 
 /**
- * ipr_save_ioafp_mode_select - Save adapters mode select data
- * @ioa_cfg:   ioa config struct
- * @scsi_cmd:  scsi command struct
- *
- * This function saves mode select data for the adapter to
- * use following an adapter reset.
- *
- * Return value:
- *     0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
- **/
-static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
-                                      struct scsi_cmnd *scsi_cmd)
-{
-       if (!ioa_cfg->saved_mode_pages) {
-               ioa_cfg->saved_mode_pages  = kmalloc(sizeof(struct ipr_mode_pages),
-                                                    GFP_ATOMIC);
-               if (!ioa_cfg->saved_mode_pages) {
-                       dev_err(&ioa_cfg->pdev->dev,
-                               "IOA mode select buffer allocation failed\n");
-                       return SCSI_MLQUEUE_HOST_BUSY;
-               }
-       }
-
-       memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
-       ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
-       return 0;
-}
-
-/**
  * ipr_queuecommand - Queue a mid-layer request
  * @scsi_cmd:  scsi command struct
  * @done:              done function
@@ -4338,9 +4309,6 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
            (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
                ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
 
-       if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
-               rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
-
        if (likely(rc == 0))
                rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
 
@@ -4829,17 +4797,11 @@ static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
        int length;
 
        ENTER;
-       if (ioa_cfg->saved_mode_pages) {
-               memcpy(mode_pages, ioa_cfg->saved_mode_pages,
-                      ioa_cfg->saved_mode_page_len);
-               length = ioa_cfg->saved_mode_page_len;
-       } else {
-               ipr_scsi_bus_speed_limit(ioa_cfg);
-               ipr_check_term_power(ioa_cfg, mode_pages);
-               ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
-               length = mode_pages->hdr.length + 1;
-               mode_pages->hdr.length = 0;
-       }
+       ipr_scsi_bus_speed_limit(ioa_cfg);
+       ipr_check_term_power(ioa_cfg, mode_pages);
+       ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
+       length = mode_pages->hdr.length + 1;
+       mode_pages->hdr.length = 0;
 
        ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
                              ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
@@ -5969,7 +5931,6 @@ static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
        }
 
        ipr_free_dump(ioa_cfg);
-       kfree(ioa_cfg->saved_mode_pages);
        kfree(ioa_cfg->trace);
 }
 

diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index b639332..fd360bf 100644 (file)
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -36,8 +36,8 @@
 /*
  * Literals
  */
-#define IPR_DRIVER_VERSION "2.1.1"
-#define IPR_DRIVER_DATE "(November 15, 2005)"
+#define IPR_DRIVER_VERSION "2.1.2"
+#define IPR_DRIVER_DATE "(February 8, 2006)"
 
 /*
  * IPR_MAX_CMD_PER_LUN: This defines the maximum number of outstanding
@@ -1000,7 +1000,6 @@ struct ipr_ioa_cfg {
        struct Scsi_Host *host;
        struct pci_dev *pdev;
        struct ipr_sglist *ucode_sglist;
-       struct ipr_mode_pages *saved_mode_pages;
        u8 saved_mode_page_len;
 
        struct work_struct work_q;