evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Staging: hv: Simplify blkvsc_init_rw()

Browse source 
Simplyfify blkvsc_init_rw() by using a single scsi command independent of
the start sector.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan 2011-04-22 14:55:14 -07:00 • committed by Greg Kroah-Hartman
parent 3880914aa6
commit 9bd0859a24
1 changed files with 13 additions and 45 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

58
drivers/staging/hv/blkvsc_drv.c
View file

@ -305,53 +305,21 @@ static void blkvsc_init_rw(struct blkvsc_request *blkvsc_req)
blkvsc_req->cmd_len = 16;
if (blkvsc_req->sector_start > 0xffffffff) {
if (rq_data_dir(blkvsc_req->req)) {
blkvsc_req->write = 1;
blkvsc_req->cmnd[0] = WRITE_16;
} else {
blkvsc_req->write = 0;
blkvsc_req->cmnd[0] = READ_16;
}
blkvsc_req->cmnd[1] |=
(blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
*(unsigned long long *)&blkvsc_req->cmnd[2] =
cpu_to_be64(blkvsc_req->sector_start);
*(unsigned int *)&blkvsc_req->cmnd[10] =
cpu_to_be32(blkvsc_req->sector_count);
} else if ((blkvsc_req->sector_count > 0xff) ||
(blkvsc_req->sector_start > 0x1fffff)) {
if (rq_data_dir(blkvsc_req->req)) {
blkvsc_req->write = 1;
blkvsc_req->cmnd[0] = WRITE_10;
} else {
blkvsc_req->write = 0;
blkvsc_req->cmnd[0] = READ_10;
}
blkvsc_req->cmnd[1] |=
(blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
*(unsigned int *)&blkvsc_req->cmnd[2] =
cpu_to_be32(blkvsc_req->sector_start);
*(unsigned short *)&blkvsc_req->cmnd[7] =
cpu_to_be16(blkvsc_req->sector_count);
if (rq_data_dir(blkvsc_req->req)) {
blkvsc_req->write = 1;
blkvsc_req->cmnd[0] = WRITE_16;
} else {
if (rq_data_dir(blkvsc_req->req)) {
blkvsc_req->write = 1;
blkvsc_req->cmnd[0] = WRITE_6;
} else {
blkvsc_req->write = 0;
blkvsc_req->cmnd[0] = READ_6;
}
*(unsigned int *)&blkvsc_req->cmnd[1] =
cpu_to_be32(blkvsc_req->sector_start) >> 8;
blkvsc_req->cmnd[1] &= 0x1f;
blkvsc_req->cmnd[4] = (unsigned char)blkvsc_req->sector_count;
blkvsc_req->write = 0;
blkvsc_req->cmnd[0] = READ_16;
}
blkvsc_req->cmnd[1] |=
(blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
*(unsigned long long *)&blkvsc_req->cmnd[2] =
cpu_to_be64(blkvsc_req->sector_start);
*(unsigned int *)&blkvsc_req->cmnd[10] =
cpu_to_be32(blkvsc_req->sector_count);
}