ide: refactor tf_read() method
Simplify tf_read() method, making it deal only with 'struct ide_taskfile' and
the validity flags that the upper layer passes, and factoring out the code that
deals with the high order bytes into ide_tf_readback() to be called from the
only two functions interested, ide_complete_cmd() and ide_dump_sector().
This should stop the needless code duplication in this method and so make
it about twice smaller than it was; along with simplifying the setup for
the method call, this should save both time and space...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-io-std.c b/drivers/ide/ide-io-std.c
index 481e221..46721c4 100644
--- a/drivers/ide/ide-io-std.c
+++ b/drivers/ide/ide-io-std.c
@@ -112,13 +112,11 @@
}
EXPORT_SYMBOL_GPL(ide_tf_load);
-void ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
+void ide_tf_read(ide_drive_t *drive, struct ide_taskfile *tf, u8 valid)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
- struct ide_taskfile *tf = &cmd->tf;
u8 (*tf_inb)(unsigned long port);
- u8 valid = cmd->valid.in.tf;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
if (mmio)
@@ -126,9 +124,6 @@
else
tf_inb = ide_inb;
- /* be sure we're looking at the low order bits */
- hwif->tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
-
if (valid & IDE_VALID_ERROR)
tf->error = tf_inb(io_ports->feature_addr);
if (valid & IDE_VALID_NSECT)
@@ -141,24 +136,6 @@
tf->lbah = tf_inb(io_ports->lbah_addr);
if (valid & IDE_VALID_DEVICE)
tf->device = tf_inb(io_ports->device_addr);
-
- if (cmd->tf_flags & IDE_TFLAG_LBA48) {
- hwif->tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);
-
- tf = &cmd->hob;
- valid = cmd->valid.in.hob;
-
- if (valid & IDE_VALID_ERROR)
- tf->error = tf_inb(io_ports->feature_addr);
- if (valid & IDE_VALID_NSECT)
- tf->nsect = tf_inb(io_ports->nsect_addr);
- if (valid & IDE_VALID_LBAL)
- tf->lbal = tf_inb(io_ports->lbal_addr);
- if (valid & IDE_VALID_LBAM)
- tf->lbam = tf_inb(io_ports->lbam_addr);
- if (valid & IDE_VALID_LBAH)
- tf->lbah = tf_inb(io_ports->lbah_addr);
- }
}
EXPORT_SYMBOL_GPL(ide_tf_read);