linux-kernel - [PATCH 07/21] Staging: hv: Get rid of the state media_not

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Message-Id: <1303509326-3094-7-git-send-email-kys@microsoft.com>
Date:	Fri, 22 Apr 2011 14:55:12 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Hank Janssen <hjanssen@...rosoft.com>
Subject: [PATCH 07/21] Staging: hv: Get rid of the state media_not_present

The block driver in Hyper-V does not handle removable media, get rid of the
media_not_present state.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
Signed-off-by: Hank Janssen <hjanssen@...rosoft.com>
---
 drivers/staging/hv/blkvsc_drv.c |    9 +--------
 1 files changed, 1 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index a7ae437..4c248b7 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -103,7 +103,6 @@ struct block_device_context {
 	unsigned int device_id_len;
 	int num_outstanding_reqs;
 	int shutting_down;
-	int media_not_present;
 	unsigned int sector_size;
 	sector_t capacity;
 	unsigned int port;
@@ -446,7 +445,6 @@ static int blkvsc_do_operation(struct block_device_context *blkdev,
 	case DO_CAPACITY:
 		blkdev->sector_size = 0;
 		blkdev->capacity = 0;
-		blkdev->media_not_present = 0; /* assume a disk is present */
 
 		blkvsc_req->cmnd[0] = READ_CAPACITY;
 		blkvsc_req->cmd_len = 16;
@@ -473,10 +471,6 @@ static int blkvsc_do_operation(struct block_device_context *blkdev,
 		scsi_normalize_sense(blkvsc_req->sense_buffer,
 				     SCSI_SENSE_BUFFERSIZE, &sense_hdr);
 
-		if (sense_hdr.asc == 0x3A)
-			/* Medium not present */
-			blkdev->media_not_present = 1;
-
 		return 0;
 	}
 
@@ -964,8 +958,7 @@ static void blkvsc_request(struct request_queue *queue)
 		DPRINT_DBG(BLKVSC_DRV, "- req %p\n", req);
 
 		blkdev = req->rq_disk->private_data;
-		if (blkdev->shutting_down || req->cmd_type != REQ_TYPE_FS ||
-		    blkdev->media_not_present) {
+		if (blkdev->shutting_down || req->cmd_type != REQ_TYPE_FS) {
 			__blk_end_request_cur(req, 0);
 			continue;
 		}
-- 
1.7.4.1

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