rpmsg: glink: Use best fit intent during tx

Intents can vary in size, try to find the best fitting remote intent
instead of first fit when sending a message to the remote proc.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 2dff77882ced..80d9af307b40 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1257,11 +1257,16 @@ static int __qcom_glink_send(struct glink_channel *channel,
                         spin_lock_irqsave(&channel->intent_lock, flags);
                         idr_for_each_entry(&channel->riids, tmp, iid) {
                                 if (tmp->size >= len && !tmp->in_use) {
-                                        tmp->in_use = true;
-                                        intent = tmp;
-                                        break;
+                                        if (!intent)
+                                                intent = tmp;
+                                        else if (intent->size > tmp->size)
+                                                intent = tmp;
+                                        if (intent->size == len)
+                                                break;
                                 }
                         }
+                        if (intent)
+                                intent->in_use = true;
                         spin_unlock_irqrestore(&channel->intent_lock, flags);
 
                         /* We found an available intent */