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lpfc: Fix locking for postbufq when freeing 

Fix locking for postbufq when freeing

Signed-off-by: James Smart <james.smart@emulex.com>
Reviewed-By: Dick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
James Smart 2014-04-04 13:51:44 -04:00 committed by Christoph Hellwig
parent bcece5f557
commit 07eab624e5
1 changed files with 12 additions and 3 deletions
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15
drivers/scsi/lpfc/lpfc_init.c
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@ -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);
}
}