Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bbeb79b9 authored by James Smart's avatar James Smart Committed by James Bottomley
Browse files

[SCSI] lpfc 8.3.32: Correct host DIF configuration that hung system 



Fix system hang due to bad protection module parameters (CR: 130769)

Signed-off-by: default avatarAlex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: default avatarJames Smart <james.smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 3b3da6a9

drivers/scsi/lpfc/lpfc_init.c

+33 −2
Original line number Diff line number Diff line
@@ -5514,14 +5514,45 @@ lpfc_destroy_shost(struct lpfc_hba *phba) 
static void

lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)

{

	uint32_t old_mask;

	uint32_t old_guard;



	int pagecnt = 10;

	if (lpfc_prot_mask && lpfc_prot_guard) {

		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,

				"1478 Registering BlockGuard with the "

				"SCSI layer\n");



		old_mask = lpfc_prot_mask;

		old_guard = lpfc_prot_guard;



		/* Only allow supported values */

		lpfc_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |

			SHOST_DIX_TYPE0_PROTECTION |

			SHOST_DIX_TYPE1_PROTECTION);

		lpfc_prot_guard &= (SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC);



		/* DIF Type 1 protection for profiles AST1/C1 is end to end */

		if (lpfc_prot_mask == SHOST_DIX_TYPE1_PROTECTION)

			lpfc_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;



		if (lpfc_prot_mask && lpfc_prot_guard) {

			if ((old_mask != lpfc_prot_mask) ||

				(old_guard != lpfc_prot_guard))

				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,

					"1475 Registering BlockGuard with the "

					"SCSI layer: mask %d  guard %d\n",

					lpfc_prot_mask, lpfc_prot_guard);



			scsi_host_set_prot(shost, lpfc_prot_mask);

			scsi_host_set_guard(shost, lpfc_prot_guard);

		} else

			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,

				"1479 Not Registering BlockGuard with the SCSI "

				"layer, Bad protection parameters: %d %d\n",

				old_mask, old_guard);

	}



	if (!_dump_buf_data) {

		while (pagecnt) {

			spin_lock_init(&_dump_buf_lock);