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Date: Fri, 6 Dec 2019 10:34:04 +0800 From: Xidong Wang <wangxidong_97@....com> To: Xidong Wang <wangxidong_97@....com>, Steffen Maier <maier@...ux.ibm.com>, Benjamin Block <bblock@...ux.ibm.com>, Heiko Carstens <heiko.carstens@...ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ibm.com>, linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 1/1] scsi: zfcp: check qdio before use In zfcp_fsf_fcp_cmnd(), zfcp_qdio_sbal_get(qdio) should be checked before zfcp_fsf_req_create() is called. Signed-off-by: Xidong Wang <wangxidong_97@....com> --- drivers/s390/scsi/zfcp_fsf.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index cf63916..8e460e3 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -2292,6 +2292,9 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) sbtype = SBAL_SFLAGS0_TYPE_WRITE; + if (zfcp_qdio_sbal_get(qdio)) + goto out; + req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, sbtype, adapter->pool.scsi_req); -- 2.7.4
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