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rpmsg: smd: Reduce restrictions when finding channel 

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>
hifive-unleashed-5.1
Bjorn Andersson 2016-10-07 21:23:11 -07:00
parent 1001354ca3
commit 66dca399e6
1 changed files with 4 additions and 11 deletions
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15
drivers/rpmsg/qcom_smd.c
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@ -820,20 +820,13 @@ 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;
ret = channel;
break;
if (!strcmp(channel->name, name)) {
ret = channel;
break;
}
}
spin_unlock_irqrestore(&edge->channels_lock, flags);