From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: [PATCH 18/18] scsi_dh_alua: use scsi_vpd_tpg_id() Date: Mon, 9 Nov 2015 16:08:23 +0100 Message-ID: <1447081703-110552-19-git-send-email-hare@suse.de> References: <1447081703-110552-1-git-send-email-hare@suse.de> Return-path: Received: from mx2.suse.de ([195.135.220.15]:51896 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751866AbbKIPI3 (ORCPT ); Mon, 9 Nov 2015 10:08:29 -0500 In-Reply-To: <1447081703-110552-1-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Martin K. Petersen" Cc: Christoph Hellwig , Jamed Bottomley , linux-scsi@vger.kernel.org, Johannes Thumshirn , Ewan Milne , Hannes Reinecke Signed-off-by: Hannes Reinecke --- drivers/scsi/device_handler/scsi_dh_alua.c | 39 +++++------------------------- 1 file changed, 6 insertions(+), 33 deletions(-) diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index abf05b4..20fe981 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -320,38 +320,10 @@ static int alua_check_tpgs(struct scsi_device *sdev) */ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h) { - unsigned char *d; - unsigned char __rcu *vpd_pg83; + int rel_port = -1, group_id; - rcu_read_lock(); - if (!rcu_dereference(sdev->vpd_pg83)){ - rcu_read_unlock(); - return SCSI_DH_DEV_UNSUPP; - } - - /* - * Look for the correct descriptor. - */ - vpd_pg83 = rcu_dereference(sdev->vpd_pg83); - d = vpd_pg83 + 4; - while (d < vpd_pg83 + sdev->vpd_pg83_len) { - switch (d[1] & 0xf) { - case 0x4: - /* Relative target port */ - h->rel_port = get_unaligned_be16(&d[6]); - break; - case 0x5: - /* Target port group */ - h->group_id = get_unaligned_be16(&d[6]); - break; - default: - break; - } - d += d[3] + 4; - } - rcu_read_unlock(); - - if (h->group_id == -1) { + group_id = scsi_vpd_tpg_id(sdev, &rel_port); + if (group_id < 0) { /* * Internal error; TPGS supported but required * VPD identification descriptors not present. @@ -360,10 +332,11 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h) sdev_printk(KERN_INFO, sdev, "%s: No target port descriptors found\n", ALUA_DH_NAME); - h->state = TPGS_STATE_OPTIMIZED; - h->tpgs = TPGS_MODE_NONE; return SCSI_DH_DEV_UNSUPP; } + h->rel_port = rel_port; + h->group_id = group_id; + sdev_printk(KERN_INFO, sdev, "%s: port group %02x rel port %02x\n", ALUA_DH_NAME, h->group_id, h->rel_port); -- 1.8.5.6