| Message ID | 20170630161056.30630-1-arnd@arndb.de |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] scsi: qla2xxx: remove incorrect byte swap | expand |
On Fri, 2017-06-30 at 18:10 +0200, Arnd Bergmann wrote: > cont_pkt->entry_type is an 8-bit field, so doing a 32-bit byteswap > on it will store incorrect data: > > drivers/scsi/qla2xxx/qla_nvme.c: In function 'qla2x00_start_nvme_mq': > include/uapi/linux/byteorder/big_endian.h:32:26: error: large integer > implicitly truncated to unsigned type [-Werror=overflow] > drivers/scsi/qla2xxx/qla_nvme.c:444:27: note: in expansion of macro > 'cpu_to_le32' > cont_pkt->entry_type = cpu_to_le32(CONTINUE_A64_TYPE); > > This removes the erroneous cpu_to_le32(). > > Fixes: e84067d74301 ("scsi: qla2xxx: Add FC-NVMe F/W initialization > and transport registration") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > --- > drivers/scsi/qla2xxx/qla_nvme.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/scsi/qla2xxx/qla_nvme.c > b/drivers/scsi/qla2xxx/qla_nvme.c > index 1da8fa8f641d..14e25e32e622 100644 > --- a/drivers/scsi/qla2xxx/qla_nvme.c > +++ b/drivers/scsi/qla2xxx/qla_nvme.c > @@ -441,7 +441,7 @@ static int qla2x00_start_nvme_mq(srb_t *sp) > req->ring_ptr++; > } > cont_pkt = (cont_a64_entry_t *)req- > >ring_ptr; > - cont_pkt->entry_type = > cpu_to_le32(CONTINUE_A64_TYPE); > + cont_pkt->entry_type = CONTINUE_A64_TYPE; > We already have a patch proposed for this, but I think it may be wrong (it's the same as yours, so yours may be wrong too) see the handling in qla_iocb.c James
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c index 1da8fa8f641d..14e25e32e622 100644 --- a/drivers/scsi/qla2xxx/qla_nvme.c +++ b/drivers/scsi/qla2xxx/qla_nvme.c @@ -441,7 +441,7 @@ static int qla2x00_start_nvme_mq(srb_t *sp) req->ring_ptr++; } cont_pkt = (cont_a64_entry_t *)req->ring_ptr; - cont_pkt->entry_type = cpu_to_le32(CONTINUE_A64_TYPE); + cont_pkt->entry_type = CONTINUE_A64_TYPE; cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; avail_dsds = 5;
cont_pkt->entry_type is an 8-bit field, so doing a 32-bit byteswap on it will store incorrect data: drivers/scsi/qla2xxx/qla_nvme.c: In function 'qla2x00_start_nvme_mq': include/uapi/linux/byteorder/big_endian.h:32:26: error: large integer implicitly truncated to unsigned type [-Werror=overflow] drivers/scsi/qla2xxx/qla_nvme.c:444:27: note: in expansion of macro 'cpu_to_le32' cont_pkt->entry_type = cpu_to_le32(CONTINUE_A64_TYPE); This removes the erroneous cpu_to_le32(). Fixes: e84067d74301 ("scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registration") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/scsi/qla2xxx/qla_nvme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.9.0