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Commit 7bb67728 authored by Jeff Hugo's avatar Jeff Hugo Committed by Gerrit - the friendly Code Review server
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soc: qcom: glink: Ensure open acks are processed before migration 



A race condition between the local and remote sides opening a channel can
cause the local glink to migrate a channel before it should.  Ensure the
open acks have been processed before allowing the channel to migrate to
fix the race.

Change-Id: I61a86eedbf54c66d6028770d1a3069ed995c76ba
Signed-off-by: default avatarJeffrey Hugo <jhugo@codeaurora.org>
parent 028b35cc

drivers/soc/qcom/glink.c

+4 −2
Original line number Diff line number Diff line
@@ -2785,7 +2785,8 @@ static struct channel_ctx *find_l_ctx_get(struct channel_ctx *r_ctx) 
			list_for_each_entry(ctx, &xprt->channels,

							port_list_node)

				if (!strcmp(ctx->name, r_ctx->name) &&

							ctx->local_xprt_req) {

							ctx->local_xprt_req &&

							ctx->local_xprt_resp) {

					l_ctx = ctx;

					rwref_get(&l_ctx->ch_state_lhc0);

				}
@@ -2826,7 +2827,8 @@ static struct channel_ctx *find_r_ctx_get(struct channel_ctx *l_ctx) 
			list_for_each_entry(ctx, &xprt->channels,

							port_list_node)

				if (!strcmp(ctx->name, l_ctx->name) &&

							ctx->remote_xprt_req) {

							ctx->remote_xprt_req &&

							ctx->remote_xprt_resp) {

					r_ctx = ctx;

					rwref_get(&r_ctx->ch_state_lhc0);

				}