[PATCH RFC 4/7] drm/display: dp-aux-dev: use new DCPD access helpers

[Dmitry Baryshkov]

Switch drm_dp_aux_dev.c to use new set of DPCD read / write helpers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
 drivers/gpu/drm/display/drm_dp_aux_dev.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_dp_aux_dev.c b/drivers/gpu/drm/display/drm_dp_aux_dev.c
index 29555b9f03c8c42681c17c4a01e74a966cf8611f..a31ab3f41efb71fd5f936c24ba5c3b8ebea68a5e 100644
--- a/drivers/gpu/drm/display/drm_dp_aux_dev.c
+++ b/drivers/gpu/drm/display/drm_dp_aux_dev.c
@@ -163,17 +163,16 @@ static ssize_t auxdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
 			break;
 		}
 
-		res = drm_dp_dpcd_read(aux_dev->aux, pos, buf, todo);
-
+		res = drm_dp_dpcd_read_data(aux_dev->aux, pos, buf, todo);
 		if (res <= 0)
 			break;
 
-		if (copy_to_iter(buf, res, to) != res) {
+		if (copy_to_iter(buf, todo, to) != todo) {
 			res = -EFAULT;
 			break;
 		}
 
-		pos += res;
+		pos += todo;
 	}
 
 	if (pos != iocb->ki_pos)
@@ -211,12 +210,11 @@ static ssize_t auxdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
 			break;
 		}
 
-		res = drm_dp_dpcd_write(aux_dev->aux, pos, buf, todo);
-
+		res = drm_dp_dpcd_write_data(aux_dev->aux, pos, buf, todo);
 		if (res <= 0)
 			break;
 
-		pos += res;
+		pos += todo;
 	}
 
 	if (pos != iocb->ki_pos)

-- 
2.39.5