Commit 1121b794 authored by Brian King's avatar Brian King Committed by James Bottomley
Browse files

[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: default avatarBrian King <brking@us.ibm.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent c06bb7f5

drivers/scsi/ipr.c

+3 −3
Original line number Diff line number Diff line
@@ -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);

drivers/scsi/ipr.h

+1 −0
Original line number Diff line number Diff line
@@ -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



/*

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