Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

[firefly-linux-kernel-4.4.55.git] / drivers / ide / ide-io.c

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 8d7c1a09e1e7fef7074f8295aab7586705c96561..788783da9025804eb5af6e6f02134f7efbd411ba 100644 (file)
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -1642,3 +1642,18 @@ void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)
 }
 
 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);