2019-07-18 01:46:41

by Lyude Paul

Subject: [PATCH 08/26] drm/dp_mst: Refactor drm_dp_send_enum_path_resources

Use more pointers so we don't have to write out
txmsg->reply.u.path_resources each time. Also, fix line wrapping +
rearrange local variables.

Cc: Juston Li <[email protected]>
Cc: Imre Deak <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Harry Wentland <[email protected]>
Signed-off-by: Lyude Paul <[email protected]>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index ec6865e1af75..57c9c605ee17 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -2350,12 +2350,14 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
kfree(txmsg);
}

-static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
- struct drm_dp_mst_branch *mstb,
- struct drm_dp_mst_port *port)
+static int
+drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
+ struct drm_dp_mst_branch *mstb,
+ struct drm_dp_mst_port *port)
{
- int len;
+ struct drm_dp_enum_path_resources_ack_reply *path_res;
struct drm_dp_sideband_msg_tx *txmsg;
+ int len;
int ret;

txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
@@ -2369,14 +2371,20 @@ static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,

ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);
if (ret > 0) {
+ path_res = &txmsg->reply.u.path_resources;
+
if (txmsg->reply.reply_type == DP_SIDEBAND_REPLY_NAK) {
DRM_DEBUG_KMS("enum path resources nak received\n");
} else {
- if (port->port_num != txmsg->reply.u.path_resources.port_number)
+ if (port->port_num != path_res->port_number)
DRM_ERROR("got incorrect port in response\n");
- DRM_DEBUG_KMS("enum path resources %d: %d %d\n", txmsg->reply.u.path_resources.port_number, txmsg->reply.u.path_resources.full_payload_bw_number,
- txmsg->reply.u.path_resources.avail_payload_bw_number);
- port->available_pbn = txmsg->reply.u.path_resources.avail_payload_bw_number;
+
+ DRM_DEBUG_KMS("enum path resources %d: %d %d\n",
+ path_res->port_number,
+ path_res->full_payload_bw_number,
+ path_res->avail_payload_bw_number);
+ port->available_pbn =
+ path_res->avail_payload_bw_number;
}
}

--
2.21.0

2019-08-14 15:08:22

by Daniel Vetter

Subject: Re: [PATCH 08/26] drm/dp_mst: Refactor drm_dp_send_enum_path_resources

On Wed, Jul 17, 2019 at 09:42:31PM -0400, Lyude Paul wrote:
> Use more pointers so we don't have to write out
> txmsg->reply.u.path_resources each time. Also, fix line wrapping +
> rearrange local variables.
>
> Cc: Juston Li <[email protected]>
> Cc: Imre Deak <[email protected]>
> Cc: Ville Syrj?l? <[email protected]>
> Cc: Harry Wentland <[email protected]>
> Signed-off-by: Lyude Paul <[email protected]>

Reviewed-by: Daniel Vetter <[email protected]>

> ---
> drivers/gpu/drm/drm_dp_mst_topology.c | 24 ++++++++++++++++--------
> 1 file changed, 16 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
> index ec6865e1af75..57c9c605ee17 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -2350,12 +2350,14 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
> kfree(txmsg);
> }
>
> -static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
> - struct drm_dp_mst_branch *mstb,
> - struct drm_dp_mst_port *port)
> +static int
> +drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
> + struct drm_dp_mst_branch *mstb,
> + struct drm_dp_mst_port *port)
> {
> - int len;
> + struct drm_dp_enum_path_resources_ack_reply *path_res;
> struct drm_dp_sideband_msg_tx *txmsg;
> + int len;
> int ret;
>
> txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
> @@ -2369,14 +2371,20 @@ static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
>
> ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);
> if (ret > 0) {
> + path_res = &txmsg->reply.u.path_resources;
> +
> if (txmsg->reply.reply_type == DP_SIDEBAND_REPLY_NAK) {
> DRM_DEBUG_KMS("enum path resources nak received\n");
> } else {
> - if (port->port_num != txmsg->reply.u.path_resources.port_number)
> + if (port->port_num != path_res->port_number)
> DRM_ERROR("got incorrect port in response\n");
> - DRM_DEBUG_KMS("enum path resources %d: %d %d\n", txmsg->reply.u.path_resources.port_number, txmsg->reply.u.path_resources.full_payload_bw_number,
> - txmsg->reply.u.path_resources.avail_payload_bw_number);
> - port->available_pbn = txmsg->reply.u.path_resources.avail_payload_bw_number;
> +
> + DRM_DEBUG_KMS("enum path resources %d: %d %d\n",
> + path_res->port_number,
> + path_res->full_payload_bw_number,
> + path_res->avail_payload_bw_number);
> + port->available_pbn =
> + path_res->avail_payload_bw_number;
> }
> }
>
> --
> 2.21.0
>

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch