| Message ID | 20191210145345.11616-3-sudeep.holla@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | firmware: arm_scmi: Add support for multiple device per protocol | expand |
On 10/12/2019 14:53, Sudeep Holla wrote: > 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. > > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> > --- > drivers/firmware/arm_scmi/driver.c | 5 +++++ > 1 file changed, 5 insertions(+) > > 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 */ > -- > 2.17.1 > Fine for me. Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Cristian
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 */
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. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- drivers/firmware/arm_scmi/driver.c | 5 +++++ 1 file changed, 5 insertions(+) -- 2.17.1