From 907d1e16ffe4ea50a9bdf1c644fd48ce6a126e4f Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 19 Feb 2016 15:57:46 +0530 Subject: [PATCH] greybus: interface: Add print messages on interface initialization/removal It might be of interest (to developers at least) to know when an interface is getting created or removed from the system. Interface creation message can further contain basic information about the interface, like its vid/pid and mfg/prod ids. Now, the interface is created by gb_interface_create(), which doesn't register the intf->dev to the kernel and so the print message is rather added to gb_interface_init() where we register the device with the kernel. A similar message is added to gb_interface_remove() only when the interface was earlier initialized. And this is how the output looks on real insertion/removal of the module: greybus 1-1: Interface added: VID=0x00000001, PID=0x00000001 greybus 1-1: DDBL1 Manufacturer=0x00000001, Product=0x00000001 ... greybus 1-1: Interface removed Signed-off-by: Viresh Kumar Reviewed-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/staging/greybus/interface.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c index 6c815db..5e49bc8 100644 --- a/drivers/staging/greybus/interface.c +++ b/drivers/staging/greybus/interface.c @@ -174,8 +174,10 @@ void gb_interface_remove(struct gb_interface *intf) list_for_each_entry_safe(bundle, next, &intf->bundles, links) gb_bundle_destroy(bundle); - if (device_is_registered(&intf->dev)) + if (device_is_registered(&intf->dev)) { device_del(&intf->dev); + dev_info(&intf->dev, "Interface removed\n"); + } gb_control_disable(intf->control); @@ -260,6 +262,11 @@ int gb_interface_init(struct gb_interface *intf, u8 device_id) goto free_manifest; } + dev_info(&intf->dev, "Interface added: VID=0x%08x, PID=0x%08x\n", + intf->vendor_id, intf->product_id); + dev_info(&intf->dev, "DDBL1 Manufacturer=0x%08x, Product=0x%08x\n", + intf->ddbl1_manufacturer_id, intf->ddbl1_product_id); + list_for_each_entry_safe_reverse(bundle, tmp, &intf->bundles, links) { ret = gb_bundle_add(bundle); if (ret) { -- 2.7.4