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| author | Sudeep Holla <sudeep.holla@arm.com> | 2019-11-06 14:32:05 +0300 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2019-12-24 14:35:49 +0300 |
| commit | 11040889afe3c0b084de0de1782534d529493e9b (patch) | |
| tree | 4b27cd199ccbffee88dd40115b1c3f43c7e5e4d5 /drivers/firmware/arm_scmi/driver.c | |
| parent | ee7a9c9f67c59008b330deff2762bd8cf1407eec (diff) | |
| download | linux-11040889afe3c0b084de0de1782534d529493e9b.tar.xz | |
firmware: arm_scmi: Skip scmi mbox channel setup for addtional devices
Now that the scmi bus supports adding multiple devices per protocol,
and since scmi_create_protocol_device calls scmi_mbox_chan_setup,
we must avoid allocating and initialising the mbox channel if it is
already initialised.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_scmi/driver.c')
| -rw-r--r-- | drivers/firmware/arm_scmi/driver.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index dee7ce3bd815..2952fcd8dd8a 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -735,6 +735,11 @@ static int scmi_mbox_chan_setup(struct scmi_info *info, struct device *dev, idx = tx ? 0 : 1; idr = tx ? &info->tx_idr : &info->rx_idr; + /* check if already allocated, used for multiple device per protocol */ + cinfo = idr_find(idr, prot_id); + if (cinfo) + return 0; + if (scmi_mailbox_check(np, idx)) { cinfo = idr_find(idr, SCMI_PROTOCOL_BASE); if (unlikely(!cinfo)) /* Possible only if platform has no Rx */ |