meta-egvirt/recipes-kernel/linux/linux-yocto/virtio-scmi/0008-firmware-arm_scmi-Add-is_scmi_protocol_device.patch

   1 From c4b299105e74f7863b2aa63bd838e7762761629c Mon Sep 17 00:00:00 2001
   2 From: Peter Hilber <peter.hilber@opensynergy.com>
   3 Date: Thu, 5 Nov 2020 22:21:14 +0100
   4 Subject: [PATCH] firmware: arm_scmi: Add is_scmi_protocol_device()
   5
   6 The scmi-virtio transport driver will need to distinguish SCMI protocol
   7 devices from the SCMI instance device in the chan_setup() and
   8 chan_free() ops. Add this internal helper to be able to distinguish the
   9 two.
  10
  11 Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
  12 Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com>
  13 ---
  14  drivers/firmware/arm_scmi/bus.c    | 5 +++++
  15  drivers/firmware/arm_scmi/common.h | 2 ++
  16  2 files changed, 7 insertions(+)
  17
  18 diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
  19 index 1377ec76a45d..4f19faafb2c5 100644
  20 --- a/drivers/firmware/arm_scmi/bus.c
  21 +++ b/drivers/firmware/arm_scmi/bus.c
  22 @@ -108,6 +108,11 @@ static struct bus_type scmi_bus_type = {
  23         .remove = scmi_dev_remove,
  24  };
  25
  26 +bool is_scmi_protocol_device(struct device *dev)
  27 +{
  28 +       return dev->bus == &scmi_bus_type;
  29 +}
  30 +
  31  int scmi_driver_register(struct scmi_driver *driver, struct module *owner,
  32                          const char *mod_name)
  33  {
  34 diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
  35 index ec9fd7fce3c7..13c9ac176b23 100644
  36 --- a/drivers/firmware/arm_scmi/common.h
  37 +++ b/drivers/firmware/arm_scmi/common.h
  38 @@ -158,6 +158,8 @@ int scmi_version_get(const struct scmi_handle *h, u8 protocol, u32 *version);
  39  void scmi_setup_protocol_implemented(const struct scmi_handle *handle,
  40                                      u8 *prot_imp);
  41
  42 +bool is_scmi_protocol_device(struct device *dev);
  43 +
  44  int scmi_base_protocol_init(struct scmi_handle *h);
  45
  46  int __init scmi_bus_init(void);