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[SCSI] ipr: Disk remove path cleanup 

Instead of NULLing the resource entry pointer when a disk
goes away to prevent any new commands being sent to it,
set the adapter resource handle to an invalid value so
new ops getting sent to it will fail with a selection timeout
response. This patch is needed for future SATA patches.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Brian King 2006-03-29 09:37:16 -06:00 committed by James Bottomley
parent c06bb7f514
commit 1121b794a3
2 changed files with 4 additions and 3 deletions
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6
drivers/scsi/ipr.c
View File

@ -869,8 +869,8 @@ static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
if (res->sdev) {
res->sdev->hostdata = NULL;
res->del_from_ml = 1;
res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
if (ioa_cfg->allow_ml_add_del)
schedule_work(&ioa_cfg->work_q);
} else
@ -2107,7 +2107,6 @@ restart:
did_work = 1;
sdev = res->sdev;
if (!scsi_device_get(sdev)) {
res->sdev = NULL;
list_move_tail(&res->queue, &ioa_cfg->free_res_q);
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
scsi_remove_device(sdev);
@ -2124,6 +2123,7 @@ restart:
bus = res->cfgte.res_addr.bus;
target = res->cfgte.res_addr.target;
lun = res->cfgte.res_addr.lun;
res->add_to_ml = 0;
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
scsi_add_device(ioa_cfg->host, bus, target, lun);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
@ -4980,7 +4980,7 @@ static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
list_for_each_entry_safe(res, temp, &old_res, queue) {
if (res->sdev) {
res->del_from_ml = 1;
res->sdev->hostdata = NULL;
res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
list_move_tail(&res->queue, &ioa_cfg->used_res_q);
} else {
list_move_tail(&res->queue, &ioa_cfg->free_res_q);

1
drivers/scsi/ipr.h
View File

@ -133,6 +133,7 @@
#define IPR_MAX_SCSI_RATE(width) ((320 * 10) / ((width) / 8))
#define IPR_IOA_RES_HANDLE 0xffffffff
#define IPR_INVALID_RES_HANDLE 0
#define IPR_IOA_RES_ADDR 0x00ffffff
/*