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ide: add ide_read_device() helper

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Add ide_read_device() helper and convert do_probe() to use it
instead of ->INB.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-07-23 19:55:54 +02:00
parent 92eb43800a
commit 1f2efb82af
1 changed files with 14 additions and 3 deletions
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17
drivers/ide/ide-probe.c
View file

@ -410,6 +410,18 @@ static int ide_busy_sleep(ide_hwif_t *hwif)
return 1;
}
static u8 ide_read_device(ide_drive_t *drive)
{
ide_task_t task;
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_IN_DEVICE;
drive->hwif->tf_read(drive, &task);
return task.tf.device;
}
/**
* do_probe - probe an IDE device
* @drive: drive to probe
@ -434,7 +446,6 @@ static int ide_busy_sleep(ide_hwif_t *hwif)
static int do_probe (ide_drive_t *drive, u8 cmd)
{
ide_hwif_t *hwif = HWIF(drive);
struct ide_io_ports *io_ports = &hwif->io_ports;
int rc;
u8 stat;
@ -455,8 +466,8 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
msleep(50);
SELECT_DRIVE(drive);
msleep(50);
if (hwif->INB(io_ports->device_addr) != drive->select.all &&
!drive->present) {
if (ide_read_device(drive) != drive->select.all && !drive->present) {
if (drive->select.b.unit != 0) {
/* exit with drive0 selected */
SELECT_DRIVE(&hwif->drives[0]);