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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2009-04-08 14:13:03 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-04-08 14:13:03 +0200
commit3153c26b54230d025c6d536e8d3015def4524906 (patch)
tree0dc92136480ddfdd2f52a48045446e9ed95ed077 /drivers/ide/ide-atapi.c
parentc9ff9e7b64138d87023b733e618f29a1d58543f7 (diff)
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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>
Diffstat (limited to 'drivers/ide/ide-atapi.c')
-rw-r--r--drivers/ide/ide-atapi.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index a359323..7201b17 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -254,15 +254,13 @@ EXPORT_SYMBOL_GPL(ide_cd_get_xferlen);
void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)
{
- struct ide_cmd cmd;
+ struct ide_taskfile tf;
- memset(&cmd, 0, sizeof(cmd));
- cmd.valid.in.tf = IDE_VALID_LBAH | IDE_VALID_LBAM | IDE_VALID_NSECT;
+ drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_NSECT |
+ IDE_VALID_LBAM | IDE_VALID_LBAH);
- drive->hwif->tp_ops->tf_read(drive, &cmd);
-
- *bcount = (cmd.tf.lbah << 8) | cmd.tf.lbam;
- *ireason = cmd.tf.nsect & 3;
+ *bcount = (tf.lbah << 8) | tf.lbam;
+ *ireason = tf.nsect & 3;
}
EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);
@@ -452,14 +450,11 @@ static void ide_init_packet_cmd(struct ide_cmd *cmd, u8 valid_tf,
static u8 ide_read_ireason(ide_drive_t *drive)
{
- struct ide_cmd cmd;
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.valid.in.tf = IDE_VALID_NSECT;
+ struct ide_taskfile tf;
- drive->hwif->tp_ops->tf_read(drive, &cmd);
+ drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_NSECT);
- return cmd.tf.nsect & 3;
+ return tf.nsect & 3;
}
static u8 ide_wait_ireason(ide_drive_t *drive, u8 ireason)