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authorK. Y. Srinivasan <kys@microsoft.com>2011-05-10 07:54:34 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-05-11 13:39:16 -0700
commit62838ce22355466c4953d37e604be29405f52904 (patch)
tree3cc055dd6e7aa3c0332480b3309b072971c6e364 /drivers/staging/hv/storvsc_drv.c
parent5c5c023496d61cee6088f59fe5e7e7a8034f6fa9 (diff)
downloadop-kernel-dev-62838ce22355466c4953d37e604be29405f52904.zip
op-kernel-dev-62838ce22355466c4953d37e604be29405f52904.tar.gz
Staging: hv: Get rid of the forward declaration of storvsc_get_chs()
Get rid of the forward declaration 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/hv/storvsc_drv.c')
-rw-r--r--drivers/staging/hv/storvsc_drv.c164
1 files changed, 80 insertions, 84 deletions
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 6f23f52..4c08328 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -381,15 +381,91 @@ static int storvsc_remove(struct hv_device *dev)
return 0;
}
+
+static int storvsc_get_chs(struct scsi_device *sdev, struct block_device * bdev,
+ sector_t capacity, int *info)
+{
+ sector_t total_sectors = capacity;
+ sector_t cylinder_times_heads = 0;
+ sector_t temp = 0;
+
+ int sectors_per_track = 0;
+ int heads = 0;
+ int cylinders = 0;
+ int rem = 0;
+
+ if (total_sectors > (65535 * 16 * 255))
+ total_sectors = (65535 * 16 * 255);
+
+ if (total_sectors >= (65535 * 16 * 63)) {
+ sectors_per_track = 255;
+ heads = 16;
+
+ cylinder_times_heads = total_sectors;
+ /* sector_div stores the quotient in cylinder_times_heads */
+ rem = sector_div(cylinder_times_heads, sectors_per_track);
+ } else {
+ sectors_per_track = 17;
+
+ cylinder_times_heads = total_sectors;
+ /* sector_div stores the quotient in cylinder_times_heads */
+ rem = sector_div(cylinder_times_heads, sectors_per_track);
+
+ temp = cylinder_times_heads + 1023;
+ /* sector_div stores the quotient in temp */
+ rem = sector_div(temp, 1024);
+
+ heads = temp;
+
+ if (heads < 4)
+ heads = 4;
+
+ if (cylinder_times_heads >= (heads * 1024) || (heads > 16)) {
+ sectors_per_track = 31;
+ heads = 16;
+
+ cylinder_times_heads = total_sectors;
+ /*
+ * sector_div stores the quotient in
+ * cylinder_times_heads
+ */
+ rem = sector_div(cylinder_times_heads,
+ sectors_per_track);
+ }
+
+ if (cylinder_times_heads >= (heads * 1024)) {
+ sectors_per_track = 63;
+ heads = 16;
+
+ cylinder_times_heads = total_sectors;
+ /*
+ * sector_div stores the quotient in
+ * cylinder_times_heads
+ */
+ rem = sector_div(cylinder_times_heads,
+ sectors_per_track);
+ }
+ }
+
+ temp = cylinder_times_heads;
+ /* sector_div stores the quotient in temp */
+ rem = sector_div(temp, heads);
+ cylinders = temp;
+
+ info[0] = heads;
+ info[1] = sectors_per_track;
+ info[2] = cylinders;
+
+ DPRINT_INFO(STORVSC_DRV, "CHS (%d, %d, %d)", cylinders, heads,
+ sectors_per_track);
+
+ return 0;
+}
/* Static decl */
static int storvsc_probe(struct hv_device *dev);
static int storvsc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd);
static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd);
-static int storvsc_get_chs(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int *info);
-
-
static int storvsc_ringbuffer_size = STORVSC_RING_BUFFER_SIZE;
module_param(storvsc_ringbuffer_size, int, S_IRUGO);
MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
@@ -867,86 +943,6 @@ static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd)
return ret;
}
-static int storvsc_get_chs(struct scsi_device *sdev, struct block_device * bdev,
- sector_t capacity, int *info)
-{
- sector_t total_sectors = capacity;
- sector_t cylinder_times_heads = 0;
- sector_t temp = 0;
-
- int sectors_per_track = 0;
- int heads = 0;
- int cylinders = 0;
- int rem = 0;
-
- if (total_sectors > (65535 * 16 * 255))
- total_sectors = (65535 * 16 * 255);
-
- if (total_sectors >= (65535 * 16 * 63)) {
- sectors_per_track = 255;
- heads = 16;
-
- cylinder_times_heads = total_sectors;
- /* sector_div stores the quotient in cylinder_times_heads */
- rem = sector_div(cylinder_times_heads, sectors_per_track);
- } else {
- sectors_per_track = 17;
-
- cylinder_times_heads = total_sectors;
- /* sector_div stores the quotient in cylinder_times_heads */
- rem = sector_div(cylinder_times_heads, sectors_per_track);
-
- temp = cylinder_times_heads + 1023;
- /* sector_div stores the quotient in temp */
- rem = sector_div(temp, 1024);
-
- heads = temp;
-
- if (heads < 4)
- heads = 4;
-
- if (cylinder_times_heads >= (heads * 1024) || (heads > 16)) {
- sectors_per_track = 31;
- heads = 16;
-
- cylinder_times_heads = total_sectors;
- /*
- * sector_div stores the quotient in
- * cylinder_times_heads
- */
- rem = sector_div(cylinder_times_heads,
- sectors_per_track);
- }
-
- if (cylinder_times_heads >= (heads * 1024)) {
- sectors_per_track = 63;
- heads = 16;
-
- cylinder_times_heads = total_sectors;
- /*
- * sector_div stores the quotient in
- * cylinder_times_heads
- */
- rem = sector_div(cylinder_times_heads,
- sectors_per_track);
- }
- }
-
- temp = cylinder_times_heads;
- /* sector_div stores the quotient in temp */
- rem = sector_div(temp, heads);
- cylinders = temp;
-
- info[0] = heads;
- info[1] = sectors_per_track;
- info[2] = cylinders;
-
- DPRINT_INFO(STORVSC_DRV, "CHS (%d, %d, %d)", cylinders, heads,
- sectors_per_track);
-
- return 0;
-}
-
static int __init storvsc_init(void)
{
int ret;
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