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SubjectRe: [PATCH] scsi: lpfc: use proper format string for dma_addr_t
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Arnd,

Thank you. Looks good.

-- james

Signed-off-by: James Smart <james.smart@broadcom.com>


On 2/27/2017 12:37 PM, Arnd Bergmann wrote:
> dma_addr_t may be either u32 or u64, depending on the kernel configuration,
> and we get a warning for the 32-bit case:
>
> drivers/scsi/lpfc/lpfc_nvme.c: In function 'lpfc_nvme_ls_req':
> drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 11 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
> drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 12 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
> drivers/scsi/lpfc/lpfc_nvme.c: In function 'lpfc_nvme_ls_abort':
> drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 11 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
> drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 12 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=]
>
> printk has a special "%pad" format string that passes the dma address by
> reference to solve this problem.
>
> Fixes: 01649561a8b4 ("scsi: lpfc: NVME Initiator: bind to nvme_fc api")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/scsi/lpfc/lpfc_nvme.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
> index 625b6589a34d..609a908ea9db 100644
> --- a/drivers/scsi/lpfc/lpfc_nvme.c
> +++ b/drivers/scsi/lpfc/lpfc_nvme.c
> @@ -457,11 +457,11 @@ lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
> /* Expand print to include key fields. */
> lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
> "6051 ENTER. lport %p, rport %p lsreq%p rqstlen:%d "
> - "rsplen:%d %llux %llux\n",
> + "rsplen:%d %pad %pad\n",
> pnvme_lport, pnvme_rport,
> pnvme_lsreq, pnvme_lsreq->rqstlen,
> - pnvme_lsreq->rsplen, pnvme_lsreq->rqstdma,
> - pnvme_lsreq->rspdma);
> + pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
> + &pnvme_lsreq->rspdma);
>
> vport->phba->fc4NvmeLsRequests++;
>
> @@ -527,11 +527,11 @@ lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
> /* Expand print to include key fields. */
> lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
> "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d "
> - "rsplen:%d %llux %llux\n",
> + "rsplen:%d %pad %pad\n",
> pnvme_lport, pnvme_rport,
> pnvme_lsreq, pnvme_lsreq->rqstlen,
> - pnvme_lsreq->rsplen, pnvme_lsreq->rqstdma,
> - pnvme_lsreq->rspdma);
> + pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
> + &pnvme_lsreq->rspdma);
>
> /*
> * Lock the ELS ring txcmplq and build a local list of all ELS IOs

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