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Commit 07eab624 authored by James Smart's avatar James Smart Committed by Christoph Hellwig
Browse files

lpfc: Fix locking for postbufq when freeing 



Fix locking for postbufq when freeing

Signed-off-by: default avatarJames Smart <james.smart@emulex.com>
Reviewed-By: default avatarDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent bcece5f5

drivers/scsi/lpfc/lpfc_init.c

+12 −3
Original line number Diff line number Diff line
@@ -836,19 +836,28 @@ lpfc_hba_free_post_buf(struct lpfc_hba *phba) 
	struct lpfc_sli *psli = &phba->sli;

	struct lpfc_sli_ring *pring;

	struct lpfc_dmabuf *mp, *next_mp;

	LIST_HEAD(buflist);

	int count;



	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)

		lpfc_sli_hbqbuf_free_all(phba);

	else {

		/* Cleanup preposted buffers on the ELS ring */

		spin_lock_irq(&phba->hbalock);

		pring = &psli->ring[LPFC_ELS_RING];

		list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {

		spin_lock_irq(&phba->hbalock);

		list_splice_init(&pring->postbufq, &buflist);

		spin_unlock_irq(&phba->hbalock);



		count = 0;

		list_for_each_entry_safe(mp, next_mp, &buflist, list) {

			list_del(&mp->list);

			pring->postbufq_cnt--;

			count++;

			lpfc_mbuf_free(phba, mp->virt, mp->phys);

			kfree(mp);

		}



		spin_lock_irq(&phba->hbalock);

		pring->postbufq_cnt -= count;

		spin_unlock_irq(&phba->hbalock);

	}

}