[SCSI] lpfc 8.3.32: Correct null pointer Error in lpfc_sli.c
This patch corrects the issue caught via Smatch and reported by Dan Carpenter: http://marc.info/?l=linux-scsi&m=133693516103343 Resolve null pointer check ordering that were odd Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com> Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -15863,24 +15863,18 @@ lpfc_drain_txq(struct lpfc_hba *phba)
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spin_lock_irqsave(&phba->hbalock, iflags);
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piocbq = lpfc_sli_ringtx_get(phba, pring);
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sglq = __lpfc_sli_get_sglq(phba, piocbq);
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if (!sglq) {
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__lpfc_sli_ringtx_put(phba, pring, piocbq);
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spin_unlock_irqrestore(&phba->hbalock, iflags);
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break;
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} else {
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if (!piocbq) {
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/* The txq_cnt out of sync. This should
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* never happen
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*/
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sglq = __lpfc_clear_active_sglq(phba,
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sglq->sli4_lxritag);
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spin_unlock_irqrestore(&phba->hbalock, iflags);
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lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
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"2823 txq empty and txq_cnt is %d\n ",
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pring->txq_cnt);
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break;
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}
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sglq = __lpfc_sli_get_sglq(phba, piocbq);
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if (!sglq) {
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__lpfc_sli_ringtx_put(phba, pring, piocbq);
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spin_unlock_irqrestore(&phba->hbalock, iflags);
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break;
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}
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/* The xri and iocb resources secured,
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