Commit 86117d7f authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Martin K. Petersen
Browse files

scsi: esp_scsi: remove union in esp_cmd_priv 



The dma_addr_t member is unused ever since we switched the SCSI
layer to send down single-segement command using a scatterlist
as well many years ago.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Tested-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 3f9295b6

drivers/scsi/esp_scsi.c

+6 −6
Original line number Diff line number Diff line
@@ -379,14 +379,14 @@ static void esp_map_dma(struct esp *esp, struct scsi_cmnd *cmd) 
		 * For pseudo DMA and PIO we need the virtual address instead of

		 * a dma address, so perform an identity mapping.

		 */

		spriv->u.num_sg = scsi_sg_count(cmd);

		for (i = 0; i < spriv->u.num_sg; i++) {

		spriv->num_sg = scsi_sg_count(cmd);

		for (i = 0; i < spriv->num_sg; i++) {

			sg[i].dma_address = (uintptr_t)sg_virt(&sg[i]);

			total += sg_dma_len(&sg[i]);

		}

	} else {

		spriv->u.num_sg = scsi_dma_map(cmd);

		for (i = 0; i < spriv->u.num_sg; i++)

		spriv->num_sg = scsi_dma_map(cmd);

		for (i = 0; i < spriv->num_sg; i++)

			total += sg_dma_len(&sg[i]);

	}

	spriv->cur_residue = sg_dma_len(sg);
@@ -982,7 +982,7 @@ static int esp_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_ 
	cmd->scsi_done = done;



	spriv = ESP_CMD_PRIV(cmd);

	spriv->u.dma_addr = ~(dma_addr_t)0x0;

	spriv->num_sg = 0;



	list_add_tail(&ent->list, &esp->queued_cmds);
@@ -1372,7 +1372,7 @@ static int esp_data_bytes_sent(struct esp *esp, struct esp_cmd_entry *ent, 
			struct esp_cmd_priv *p = ESP_CMD_PRIV(cmd);

			u8 *ptr;



			ptr = scsi_kmap_atomic_sg(p->cur_sg, p->u.num_sg,

			ptr = scsi_kmap_atomic_sg(p->cur_sg, p->num_sg,

						  &offset, &count);

			if (likely(ptr)) {

				*(ptr + offset) = bval;

drivers/scsi/esp_scsi.h

+1 −5
Original line number Diff line number Diff line
@@ -249,11 +249,7 @@ 
#define SYNC_DEFP_FAST            0x19   /* 10mb/s */



struct esp_cmd_priv {

	union {

		dma_addr_t	dma_addr;

	int			num_sg;

	} u;



	int			cur_residue;

	struct scatterlist	*cur_sg;

	int			tot_residue;

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