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HID: intel-ish-hid: fix wrong driver_data usage
Currently, in suspend() and resume(), ishtp client drivers are using driver_data to get "struct ishtp_cl_device" object which is set by bus driver. It's wrong since the driver_data should not be owned bus. driver_data should be owned by the corresponding ishtp client driver. Due to this, some ishtp client driver like cros_ec_ishtp which uses its driver_data to transfer its data to its child doesn't work correctly. So this patch removes setting driver_data in bus drier and instead of using driver_data to get "struct ishtp_cl_device", since "struct device" is embedded in "struct ishtp_cl_device", we introduce a helper function that returns "struct ishtp_cl_device" from "struct device". Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -899,7 +899,7 @@ static int hid_ishtp_cl_reset(struct ishtp_cl_device *cl_device)
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*/
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static int hid_ishtp_cl_suspend(struct device *device)
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{
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struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
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struct ishtp_cl_device *cl_device = ishtp_dev_to_cl_device(device);
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struct ishtp_cl *hid_ishtp_cl = ishtp_get_drvdata(cl_device);
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struct ishtp_cl_data *client_data = ishtp_get_client_data(hid_ishtp_cl);
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@ -920,7 +920,7 @@ static int hid_ishtp_cl_suspend(struct device *device)
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*/
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static int hid_ishtp_cl_resume(struct device *device)
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{
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struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
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struct ishtp_cl_device *cl_device = ishtp_dev_to_cl_device(device);
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struct ishtp_cl *hid_ishtp_cl = ishtp_get_drvdata(cl_device);
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struct ishtp_cl_data *client_data = ishtp_get_client_data(hid_ishtp_cl);
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@ -479,7 +479,6 @@ static struct ishtp_cl_device *ishtp_bus_add_device(struct ishtp_device *dev,
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}
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ishtp_device_ready = true;
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dev_set_drvdata(&device->dev, device);
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return device;
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}
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@ -647,6 +646,20 @@ void *ishtp_get_drvdata(struct ishtp_cl_device *cl_device)
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}
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EXPORT_SYMBOL(ishtp_get_drvdata);
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/**
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* ishtp_dev_to_cl_device() - get ishtp_cl_device instance from device instance
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* @device: device instance
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*
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* Get ish_cl_device instance which embeds device instance in it.
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*
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* Return: pointer to ishtp_cl_device instance
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*/
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struct ishtp_cl_device *ishtp_dev_to_cl_device(struct device *device)
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{
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return to_ishtp_cl_device(device);
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}
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EXPORT_SYMBOL(ishtp_dev_to_cl_device);
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/**
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* ishtp_bus_new_client() - Create a new client
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* @dev: ISHTP device instance
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@ -103,6 +103,7 @@ void ishtp_put_device(struct ishtp_cl_device *cl_dev);
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void ishtp_get_device(struct ishtp_cl_device *cl_dev);
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void ishtp_set_drvdata(struct ishtp_cl_device *cl_device, void *data);
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void *ishtp_get_drvdata(struct ishtp_cl_device *cl_device);
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struct ishtp_cl_device *ishtp_dev_to_cl_device(struct device *dev);
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int ishtp_register_event_cb(struct ishtp_cl_device *device,
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void (*read_cb)(struct ishtp_cl_device *));
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struct ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev,
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