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author | K. Y. Srinivasan <kys@microsoft.com> | 2011-05-10 07:54:34 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-11 13:39:16 -0700 |
commit | 62838ce22355466c4953d37e604be29405f52904 (patch) | |
tree | 3cc055dd6e7aa3c0332480b3309b072971c6e364 /drivers/staging/hv/storvsc_drv.c | |
parent | 5c5c023496d61cee6088f59fe5e7e7a8034f6fa9 (diff) | |
download | kernel_samsung_smdk4412-62838ce22355466c4953d37e604be29405f52904.zip kernel_samsung_smdk4412-62838ce22355466c4953d37e604be29405f52904.tar.gz kernel_samsung_smdk4412-62838ce22355466c4953d37e604be29405f52904.tar.bz2 |
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.c | 164 |
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; |