From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@suse.de, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, virtualization@lists.osdl.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>,
Abhishek Kane <v-abkane@microsoft.com>
Subject: [PATCH 13/22] Staging: hv: Get rid of the forward declaration for blkvsc_do_read_capacity()
Date: Mon, 28 Mar 2011 10:00:44 -0700 [thread overview]
Message-ID: <1301331653-26265-13-git-send-email-kys@microsoft.com> (raw)
In-Reply-To: <1301331653-26265-1-git-send-email-kys@microsoft.com>
Get rid of the forward declaration for blkvsc_do_read_capacity() by moving
the code around.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
---
drivers/staging/hv/blkvsc_drv.c | 152 +++++++++++++++++++-------------------
1 files changed, 76 insertions(+), 76 deletions(-)
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 720d54b..b93c8b7 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -698,6 +698,82 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
return 0;
}
+
+/* Do a scsi READ_CAPACITY cmd here to get the size of the disk */
+static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
+{
+ struct blkvsc_request *blkvsc_req;
+ struct page *page_buf;
+ unsigned char *buf;
+ struct scsi_sense_hdr sense_hdr;
+ struct vmscsi_request *vm_srb;
+
+ DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_read_capacity()\n");
+
+ blkdev->sector_size = 0;
+ blkdev->capacity = 0;
+ blkdev->media_not_present = 0; /* assume a disk is present */
+
+ blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
+ if (!blkvsc_req)
+ return -ENOMEM;
+
+ memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
+ page_buf = alloc_page(GFP_KERNEL);
+ if (!page_buf) {
+ kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
+ return -ENOMEM;
+ }
+
+ vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
+ init_completion(&blkvsc_req->request.wait_event);
+ blkvsc_req->dev = blkdev;
+ blkvsc_req->req = NULL;
+ blkvsc_req->write = 0;
+
+ blkvsc_req->request.data_buffer.pfn_array[0] =
+ page_to_pfn(page_buf);
+ blkvsc_req->request.data_buffer.offset = 0;
+ blkvsc_req->request.data_buffer.len = 8;
+
+ blkvsc_req->cmnd[0] = READ_CAPACITY;
+ blkvsc_req->cmd_len = 16;
+
+ blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
+
+ DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
+ blkvsc_req);
+
+ wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
+
+ /* check error */
+ if (vm_srb->scsi_status) {
+ 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;
+ }
+ buf = kmap(page_buf);
+
+ /* be to le */
+ blkdev->capacity = ((buf[0] << 24) | (buf[1] << 16) |
+ (buf[2] << 8) | buf[3]) + 1;
+ blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) |
+ (buf[6] << 8) | buf[7];
+
+ kunmap(page_buf);
+
+ __free_page(page_buf);
+
+ kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
+
+ return 0;
+}
+
/* Static decl */
static int blkvsc_probe(struct device *dev);
static int blkvsc_revalidate_disk(struct gendisk *gd);
@@ -706,7 +782,6 @@ static void blkvsc_request_completion(struct hv_storvsc_request *request);
static int blkvsc_do_request(struct block_device_context *blkdev,
struct request *req);
static int blkvsc_do_inquiry(struct block_device_context *blkdev);
-static int blkvsc_do_read_capacity(struct block_device_context *blkdev);
static int blkvsc_do_read_capacity16(struct block_device_context *blkdev);
static int blkvsc_do_pending_reqs(struct block_device_context *blkdev);
@@ -1040,81 +1115,6 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
return 0;
}
-/* Do a scsi READ_CAPACITY cmd here to get the size of the disk */
-static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
-{
- struct blkvsc_request *blkvsc_req;
- struct page *page_buf;
- unsigned char *buf;
- struct scsi_sense_hdr sense_hdr;
- struct vmscsi_request *vm_srb;
-
- DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_read_capacity()\n");
-
- blkdev->sector_size = 0;
- blkdev->capacity = 0;
- blkdev->media_not_present = 0; /* assume a disk is present */
-
- blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
- if (!blkvsc_req)
- return -ENOMEM;
-
- memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
- page_buf = alloc_page(GFP_KERNEL);
- if (!page_buf) {
- kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
- return -ENOMEM;
- }
-
- vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
- init_completion(&blkvsc_req->request.wait_event);
- blkvsc_req->dev = blkdev;
- blkvsc_req->req = NULL;
- blkvsc_req->write = 0;
-
- blkvsc_req->request.data_buffer.pfn_array[0] =
- page_to_pfn(page_buf);
- blkvsc_req->request.data_buffer.offset = 0;
- blkvsc_req->request.data_buffer.len = 8;
-
- blkvsc_req->cmnd[0] = READ_CAPACITY;
- blkvsc_req->cmd_len = 16;
-
- blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
-
- DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
- blkvsc_req);
-
- wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
-
- /* check error */
- if (vm_srb->scsi_status) {
- 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;
- }
- buf = kmap(page_buf);
-
- /* be to le */
- blkdev->capacity = ((buf[0] << 24) | (buf[1] << 16) |
- (buf[2] << 8) | buf[3]) + 1;
- blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) |
- (buf[6] << 8) | buf[7];
-
- kunmap(page_buf);
-
- __free_page(page_buf);
-
- kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
-
- return 0;
-}
-
static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
{
struct blkvsc_request *blkvsc_req;
--
1.7.4.1
next prev parent reply other threads:[~2011-03-28 17:00 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 17:00 [PATCH 00/22] Staging: hv: Cleanup-storage-drivers-phase-III K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 01/22] Staging: hv: Get rid of the forward declaration of blkvsc_submit_request() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 02/22] Staging: hv: Get rid of the forward declaration of blkvsc_media_changed() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 03/22] Staging: hv: Get rid of the forward declaration of blkvsc_open() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 04/22] Staging: hv: Get rid of the forward declaration of blkvsc_getgeo() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 05/22] Staging: hv: Get rid of the forward declaration of blkvsc_init_rw() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 06/22] Staging: hv: Get rid of the forward declaration of blkvsc_ioctl() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 07/22] Staging: hv: Get rid of the forward declaration of blkvsc_cmd_completion() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 08/22] Staging: hv: Get rid of the forward declaration of blkvsc_do_flush() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 09/22] Staging: hv: Get rid of the forward declaration of blkvsc_cancel_pending_reqs() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 10/22] Staging: hv: Get rid of the forward declaration of blkvsc_remove() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 11/22] Staging: hv: Get rid of the forward declaration of blkvsc_shutdown() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 12/22] Staging: hv: Get rid of the forward declaration for blkvsc_release() K. Y. Srinivasan
2011-03-28 17:00 ` K. Y. Srinivasan [this message]
2011-03-28 17:00 ` [PATCH 14/22] Staging: hv: Get rid of the forward declaration of blkvsc_do_read_capacity16() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 15/22] Staging: hv: Get rid of the forward declaration of blkvsc_revalidate_disk() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 16/22] Staging: hv: Get rid of the forward declaration for blkvsc_do_inquiry() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 17/22] Staging: hv: Get rid of the forward declaration for blkvsc_do_request() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 18/22] Staging: hv: Get rid of the forward declaration for blkvsc_do_pending_reqs() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 19/22] Staging: hv: Get rid of the forward declaration for blkvsc_request() K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 20/22] Staging: hv: Move some definitions/declarations to be earlier in the file K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 21/22] Staging: hv: Move module parameter to " K. Y. Srinivasan
2011-03-28 17:00 ` [PATCH 22/22] Staging: hv: Get rid of some dead code in blkvsc_drv.c K. Y. Srinivasan
2011-04-05 4:59 ` [PATCH 00/22] Staging: hv: Cleanup-storage-drivers-phase-III Greg KH
2011-04-05 13:58 ` KY Srinivasan
2011-04-05 15:10 ` Greg KH
2011-04-05 15:29 ` KY Srinivasan
2011-04-06 22:59 ` KY Srinivasan
-- strict thread matches above, loose matches on Subject: below --
2011-04-06 21:34 [RESEND] " K. Y. Srinivasan
2011-04-06 21:34 ` [PATCH 01/22] Staging: hv: Get rid of the forward declaration of blkvsc_submit_request() K. Y. Srinivasan
2011-04-06 21:35 ` [PATCH 13/22] Staging: hv: Get rid of the forward declaration for blkvsc_do_read_capacity() K. Y. Srinivasan
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