Change in coreboot[master]: device: Add helper function is_devfn_enabled()

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/55278 )

Change subject: device: Add helper function is_devfn_enabled()
......................................................................

device: Add helper function is_devfn_enabled()

is_devfn_enabled() function helps to check if a device
is enabled based on given device function number. This
function internally called is_dev_enabled() to check
device state.

Change-Id: I6aeba0da05b13b70155a991f69a6abf7eb48a78c
Signed-off-by: Subrata Banik 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55278
Tested-by: build bot (Jenkins) 
Reviewed-by: Tim Wawrzynczak 
Reviewed-by: Furquan Shaikh 
---
M src/device/device_const.c
M src/include/device/device.h
2 files changed, 7 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Furquan Shaikh: Looks good to me, approved
  Tim Wawrzynczak: Looks good to me, approved

diff --git a/src/device/device_const.c b/src/device/device_const.c
index 20afe7e..7e7f2f1 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -397,3 +397,9 @@
    	return false;
    return dev->enabled;
 }
+
+bool is_devfn_enabled(unsigned int devfn)
+{
+	const struct device *dev = pcidev_path_on_root(devfn);
+	return is_dev_enabled(dev);
+}
diff --git a/src/include/device/device.h b/src/include/device/device.h
index 623d337..afa6a40 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -192,6 +192,7 @@
 bool dev_is_active_bridge(struct device *dev);
 void add_more_links(struct device *dev, unsigned int total_links);
 bool is_dev_enabled(const struct device *const dev);
+bool is_devfn_enabled(unsigned int devfn);

/* Option ROM helper functions */
 void run_bios(struct device *dev, unsigned long addr);