scsi: qla2xxx: Fix a recently introduced memory leak

qla2x00_probe_one() allocates IRQs before it initializes rsp_q_map so
IRQs must be freed even if rsp_q_map allocation did not occur.  This was
detected by kmemleak.

Fixes: 4fa183455988 ("scsi: qla2xxx: Utilize pci_alloc_irq_vectors/pci_free_irq_vectors calls")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Michael Hernandez <michael.hernandez@cavium.com>
Cc: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-By: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 5815403d1d65e82b6c36aa98ec393441014ab632..3116bf390b06ad521a5300147a024f39082c54fd 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3237,7 +3237,7 @@ qla2x00_free_irqs(scsi_qla_host_t *vha)
         * from a probe failure context.
         */
        if (!ha->rsp_q_map || !ha->rsp_q_map[0])
-               return;
+               goto free_irqs;
        rsp = ha->rsp_q_map[0];
 
        if (ha->flags.msix_enabled) {
@@ -3257,6 +3257,7 @@ qla2x00_free_irqs(scsi_qla_host_t *vha)
                free_irq(pci_irq_vector(ha->pdev, 0), rsp);
        }
 
+free_irqs:
        pci_free_irq_vectors(ha->pdev);
 }