[SCSI] qla2xxx: fix to honor ignored parameters in sysfs attributes

This is a patch to fix 'segmentation fault' issue which was initiated
by Richard Lary <rlary@us.ibm.com>.  Thanks again Richard.

- on following sysfs attritute function, changes have made so that both
  count and offset input parameters are honored by the functions.
    = qla2x00_sysfs_read_nvram()
    = qla2x00_sysfs_read_vpd()
- made changes so that NVRAM data to be cached to minimize H/W accesses
  during agent querying of the driver's.

Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 0c9f36c8a248..27ae3a532a55 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2340,10 +2340,14 @@ typedef struct scsi_qla_host {
         uint8_t         serial2;
 
         /* NVRAM configuration data */
+#define MAX_NVRAM_SIZE  4096
+#define VPD_OFFSET      MAX_NVRAM_SIZE / 2
         uint16_t        nvram_size;
         uint16_t        nvram_base;
+        void            *nvram;
         uint16_t        vpd_size;
         uint16_t        vpd_base;
+        void            *vpd;
 
         uint16_t        loop_reset_delay;
         uint8_t         retry_count;