From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH V4 01/16] scsi: vmw_pscsi: use sg helper to operate scatterlist Date: Mon, 17 Jun 2019 11:03:34 +0800 Message-ID: <20190617030349.26415-2-ming.lei@redhat.com> References: <20190617030349.26415-1-ming.lei@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190617030349.26415-1-ming.lei@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: linux-scsi@vger.kernel.org, "Martin K . Petersen" Cc: Michael Schmitz , devel@driverdev.osuosl.org, Hannes Reinecke , Benjamin Block , Bart Van Assche , Greg Kroah-Hartman , linux-usb@vger.kernel.org, James Smart , "Ewan D . Milne" , Jim Gill , James Bottomley , Brian King , Finn Thain , "Juergen E . Fischer" , Ming Lei , Christoph Hellwig , Dan Carpenter List-Id: linux-scsi@vger.kernel.org Use the scatterlist iterators and remove direct indexing of the scatterlist array. This way allows us to pre-allocate one small scatterlist, which can be chained with one runtime allocated scatterlist if the pre-allocated one isn't enough for the whole request. Reviewed-by: Ewan D. Milne Signed-off-by: Ming Lei --- drivers/scsi/vmw_pvscsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c index ecee4b3ff073..d71abd416eb4 100644 --- a/drivers/scsi/vmw_pvscsi.c +++ b/drivers/scsi/vmw_pvscsi.c @@ -335,7 +335,7 @@ static void pvscsi_create_sg(struct pvscsi_ctx *ctx, BUG_ON(count > PVSCSI_MAX_NUM_SG_ENTRIES_PER_SEGMENT); sge = &ctx->sgl->sge[0]; - for (i = 0; i < count; i++, sg++) { + for (i = 0; i < count; i++, sg = sg_next(sg)) { sge[i].addr = sg_dma_address(sg); sge[i].length = sg_dma_len(sg); sge[i].flags = 0; -- 2.20.1