firmware: scmi: fix the multi channel support with CCF

When the CCF is activated, the dev->parent is not necessary
the reference to SCMI transport and the function devm_scmi_of_get_channel
failed for the registered SCMI clock, child for protocol@14,
the channel is null and the SCMI clock driver crash for any operations.

This patch changes the first parameter of the ops of_get_channel(),
aligned with other process_msg() to pass directly the good reference,
i.e. parent result of find_scmi_transport_device(dev)
which return the reference of the scmi transport device.

Fixes: 8e96801aa6a ("firmware: scmi: add multi-channel support")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

diff --git a/drivers/firmware/scmi/mailbox_agent.c b/drivers/firmware/scmi/mailbox_agent.c
index 3efdab9..8277c18 100644 (file)
--- a/drivers/firmware/scmi/mailbox_agent.c
+++ b/drivers/firmware/scmi/mailbox_agent.c
@@ -96,7 +96,7 @@ static int setup_channel(struct udevice *dev, struct scmi_mbox_channel *chan)
 static int scmi_mbox_get_channel(struct udevice *dev,
                                 struct scmi_channel **channel)
 {
-       struct scmi_mbox_channel *base_chan = dev_get_plat(dev->parent);
+       struct scmi_mbox_channel *base_chan = dev_get_plat(dev);
        struct scmi_mbox_channel *chan;
        int ret;
 

diff --git a/drivers/firmware/scmi/optee_agent.c b/drivers/firmware/scmi/optee_agent.c
index 2b2b8c1..db927fb 100644 (file)
--- a/drivers/firmware/scmi/optee_agent.c
+++ b/drivers/firmware/scmi/optee_agent.c
@@ -326,7 +326,7 @@ static int setup_channel(struct udevice *dev, struct scmi_optee_channel *chan)
 static int scmi_optee_get_channel(struct udevice *dev,
                                  struct scmi_channel **channel)
 {
-       struct scmi_optee_channel *base_chan = dev_get_plat(dev->parent);
+       struct scmi_optee_channel *base_chan = dev_get_plat(dev);
        struct scmi_optee_channel *chan;
        u32 channel_id;
        int ret;

diff --git a/drivers/firmware/scmi/scmi_agent-uclass.c b/drivers/firmware/scmi/scmi_agent-uclass.c
index c3f3d1f..8f48de3 100644 (file)
--- a/drivers/firmware/scmi/scmi_agent-uclass.c
+++ b/drivers/firmware/scmi/scmi_agent-uclass.c
@@ -137,7 +137,7 @@ int devm_scmi_of_get_channel(struct udevice *dev, struct scmi_channel **channel)
                return -ENODEV;
 
        if (transport_dev_ops(parent)->of_get_channel)
-               return transport_dev_ops(parent)->of_get_channel(dev, channel);
+               return transport_dev_ops(parent)->of_get_channel(parent, channel);
 
        /* Drivers without a get_channel operator don't need a channel ref */
        *channel = NULL;

diff --git a/drivers/firmware/scmi/smccc_agent.c b/drivers/firmware/scmi/smccc_agent.c
index bc2eb67..6a52cd7 100644 (file)
--- a/drivers/firmware/scmi/smccc_agent.c
+++ b/drivers/firmware/scmi/smccc_agent.c
@@ -83,7 +83,7 @@ static int setup_channel(struct udevice *dev, struct scmi_smccc_channel *chan)
 static int scmi_smccc_get_channel(struct udevice *dev,
                                  struct scmi_channel **channel)
 {
-       struct scmi_smccc_channel *base_chan = dev_get_plat(dev->parent);
+       struct scmi_smccc_channel *base_chan = dev_get_plat(dev);
        struct scmi_smccc_channel *chan;
        u32 func_id;
        int ret;