Per definition, this function should return the number of bytes
consumed. Also take care of the unlikely case when buflen is not a
multiple of four; while transferring, the division cuts the remaining
bytes, so alter the return value accordingly.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
---
 drivers/ata/pata_rb532_cf.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index b919012..95a0d66 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -75,7 +75,7 @@ static void rb532_pata_exec_command(struct ata_port *ap,
 	rb532_pata_finish_io(ap);
 }
 
-static void rb532_pata_data_xfer(struct ata_device *adev,
+static unsigned int rb532_pata_data_xfer(struct ata_device *adev,
 		unsigned char *buf, unsigned int buflen, int write_data)
 {
 	struct ata_port *ap = adev->link->ap;
@@ -87,6 +87,7 @@ static void rb532_pata_data_xfer(struct ata_device *adev,
 		readsl(ioaddr, buf, buflen / sizeof(u32));
 
 	rb532_pata_finish_io(adev->link->ap);
+	return buflen - (buflen % sizeof(u32));
 }
 
 static void rb532_pata_freeze(struct ata_port *ap)
-- 
1.5.6.4


