cciss: Clear all sysfs-exposed data for deleted logical drives.

When removing a logical drive, clear all the information that is
now exposed by sysfs (e.g. vendor, model, serial number.)

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index aa95eeb30206e18b497e87e85e91d04010684ce2..09a0f7bb433b5a549f47d71203ec611c2e7c8e83 100644 (file)
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -2134,6 +2134,25 @@ mem_msg:
        goto freeret;
 }
 
+static void cciss_clear_drive_info(drive_info_struct *drive_info)
+{
+       /* zero out the disk size info */
+       drive_info->nr_blocks = 0;
+       drive_info->block_size = 0;
+       drive_info->heads = 0;
+       drive_info->sectors = 0;
+       drive_info->cylinders = 0;
+       drive_info->raid_level = -1;
+       memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no));
+       memset(drive_info->model, 0, sizeof(drive_info->model));
+       memset(drive_info->rev, 0, sizeof(drive_info->rev));
+       memset(drive_info->vendor, 0, sizeof(drive_info->vendor));
+       /*
+        * don't clear the LUNID though, we need to remember which
+        * one this one is.
+        */
+}
+
 /* This function will deregister the disk and it's queue from the
  * kernel.  It must be called with the controller lock held and the
  * drv structures busy_configuring flag set.  It's parameters are:
@@ -2212,16 +2231,8 @@ static int deregister_disk(ctlr_info_t *h, int drv_index,
        }
 
        --h->num_luns;
-       /* zero out the disk size info */
-       drv->nr_blocks = 0;
-       drv->block_size = 0;
-       drv->heads = 0;
-       drv->sectors = 0;
-       drv->cylinders = 0;
-       drv->raid_level = -1;   /* This can be used as a flag variable to
-                                * indicate that this element of the drive
-                                * array is free.
-                                */
+       cciss_clear_drive_info(drv);
+
        if (clear_all) {
                /* check to see if it was the last disk */
                if (drv == h->drv + h->highest_lun) {