xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ide: add ide_issue_pc() helper

Browse Source 
Add generic ide_issue_pc() helper to ide-atapi.c and then
convert ide-{floppy,tape,scsi} device drivers to use it.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-07-15 21:22:00 +02:00
parent 28c7214bd8
commit 6bf1641ca1
5 changed files with 57 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/ide/ide-tape.c
View File

@@ -958,10 +958,7 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive)
static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
struct ide_atapi_pc *pc)
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
int dma_ok = 0;
u16 bcount;
if (tape->pc->c[0] == REQUEST_SENSE &&
pc->c[0] == REQUEST_SENSE) {
@@ -1002,32 +999,9 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]);
pc->retries++;
/* We haven't transferred any data yet */
pc->xferred = 0;
pc->cur_pos = pc->buf;
/* Request to transfer the entire buffer at once */
bcount = pc->req_xfer;
if (pc->flags & PC_FLAG_DMA_ERROR) {
pc->flags &= ~PC_FLAG_DMA_ERROR;
ide_dma_off(drive);
}
if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma)
dma_ok = !hwif->dma_ops->dma_setup(drive);
if (!dma_ok)
pc->flags &= ~PC_FLAG_DMA_OK;
ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_DEVICE, bcount, dma_ok);
if (pc->flags & PC_FLAG_DRQ_INTERRUPT) {
ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc,
IDETAPE_WAIT_CMD, NULL);
return ide_started;
} else {
ide_execute_pkt_cmd(drive);
return idetape_transfer_pc(drive);
}
return ide_issue_pc(drive, pc, idetape_transfer_pc,
IDETAPE_WAIT_CMD, NULL);
}
/* A mode sense command is used to "sense" tape parameters. */