rpmsg: smd: Reduce restrictions when finding channel (66dca399) · Commits · 戴 / test

SMD channels are created by the remotes in "opening" state, but sometimes as we close and try to reopen them they linger in closing state. Following the search for a matching channel the create_ept() will verify that the channel is in a suitable state, so we can lax the restrictions of the search function to work around above difference in behaviour. Signed-off-by:

Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/qcom_smd.c

+4 −11

Original line number	Diff line number	Diff line
		@@ -820,21 +820,14 @@ qcom_smd_find_channel(struct qcom_smd_edge edge, const char name)
		struct qcom_smd_channel *channel;
		struct qcom_smd_channel *ret = NULL;
		unsigned long flags;
		unsigned state;

		spin_lock_irqsave(&edge->channels_lock, flags);
		list_for_each_entry(channel, &edge->channels, list) {
		if (strcmp(channel->name, name))
		continue;

		state = GET_RX_CHANNEL_INFO(channel, state);
		if (state != SMD_CHANNEL_OPENING &&
		state != SMD_CHANNEL_OPENED)
		continue;

		if (!strcmp(channel->name, name)) {
		ret = channel;
		break;
		}
		}
		spin_unlock_irqrestore(&edge->channels_lock, flags);

		return ret;

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