ide: add ide_pad_transfer() helper
* Add ide_pad_transfer() helper (which uses ->{in,out}put_data methods
internally so the transfer is also padded to drive+host requirements)
and use it instead of ide_atapi_{write_zeros,discard_data}().
* Remove no longer needed ide_atapi_{write_zeros,discard_data}().
Cc: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 8d7c1a0..788783d 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -1642,3 +1642,18 @@
}
EXPORT_SYMBOL_GPL(ide_pktcmd_tf_load);
+
+void ide_pad_transfer(ide_drive_t *drive, int write, int len)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ u8 buf[4] = { 0 };
+
+ while (len > 0) {
+ if (write)
+ hwif->output_data(drive, NULL, buf, min(4, len));
+ else
+ hwif->input_data(drive, NULL, buf, min(4, len));
+ len -= 4;
+ }
+}
+EXPORT_SYMBOL_GPL(ide_pad_transfer);