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scsi: qla2xxx: Avoid that qla2x00_mem_free() crashes if called twice 

Clear each pointer after having freed memory such that it becomes safe to
call qla2x00_mem_free() twice.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2019-04-17 14:44:23 -07:00 committed by Martin K. Petersen
parent 5365bf99e3
commit dc035d4e93
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/qla2xxx/qla_os.c
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@ -4715,6 +4715,8 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->flt) if (ha->flt)
dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE, dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE,
ha->flt, ha->flt_dma); ha->flt, ha->flt_dma);
ha->flt = NULL;
ha->flt_dma = 0;
if (ha->ms_iocb) if (ha->ms_iocb)
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma); dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
@ -4790,6 +4792,7 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->dif_bundl_pool) if (ha->dif_bundl_pool)
dma_pool_destroy(ha->dif_bundl_pool); dma_pool_destroy(ha->dif_bundl_pool);
ha->dif_bundl_pool = NULL;
qlt_mem_free(ha); qlt_mem_free(ha);