Merge "soc: qcom: smd: Return -EBUSY for a port that exists but is already open" (b8b74a9b) · Commits · e / devices / android_kernel_sony_msm8994

drivers/soc/qcom/smd.c

+14 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1936,8 +1936,21 @@ int smd_named_open_on_edge(const char *name, uint32_t edge,

	ch = smd_get_channel(name, edge);		ch = smd_get_channel(name, edge);
	if (!ch) {		if (!ch) {
	/* check closing list for port */
	spin_lock_irqsave(&smd_lock, flags);		spin_lock_irqsave(&smd_lock, flags);
			/* check opened list for port */
			list_for_each_entry(ch,
			&remote_info[edge_to_pids[edge].remote_pid].ch_list,
			ch_list) {
			if (!strcmp(name, ch->name)) {
			/* channel is already open */
			spin_unlock_irqrestore(&smd_lock, flags);
			SMD_DBG("smd_open: channel '%s' already open\n",
			ch->name);
			return -EBUSY;
			}
			}

			/* check closing list for port */
	list_for_each_entry(ch, &smd_ch_closing_list, ch_list) {		list_for_each_entry(ch, &smd_ch_closing_list, ch_list) {
	if (!strncmp(name, ch->name, 20) &&		if (!strncmp(name, ch->name, 20) &&
	(edge == ch->type)) {		(edge == ch->type)) {