diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 50c64db5d63d..c8f128bc0070 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c @@ -71,7 +71,7 @@ #include #include #include - +#include /* * Export tracepoints that act as a bare tracehook (ie: have no trace event * associated with them) to allow external modules to probe them. @@ -399,4 +399,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_delayacct_compact_start); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_delayacct_compact_end); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_delayacct_wpcopy_start); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_delayacct_wpcopy_end); - +EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_usb_dev_suspend); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_usb_dev_resume); diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 7e7e119c253f..7f55615cdf2d 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -34,6 +34,7 @@ #include "usb.h" +#include /* * Adds a new dynamic USBdevice ID to this driver, @@ -1400,11 +1401,16 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) int status = 0; int i = 0, n = 0; struct usb_interface *intf; + int bypass = 0; if (udev->state == USB_STATE_NOTATTACHED || udev->state == USB_STATE_SUSPENDED) goto done; + trace_android_rvh_usb_dev_suspend(udev, msg, &bypass); + if (bypass) + goto done; + /* Suspend all the interfaces and then udev itself */ if (udev->actconfig) { n = udev->actconfig->desc.bNumInterfaces; @@ -1501,11 +1507,17 @@ static int usb_resume_both(struct usb_device *udev, pm_message_t msg) int status = 0; int i; struct usb_interface *intf; + int bypass = 0; if (udev->state == USB_STATE_NOTATTACHED) { status = -ENODEV; goto done; } + + trace_android_vh_usb_dev_resume(udev, msg, &bypass); + if (bypass) + goto done; + udev->can_submit = 1; /* Resume the device */ diff --git a/include/trace/hooks/usb.h b/include/trace/hooks/usb.h new file mode 100644 index 000000000000..28b8d74cd6b8 --- /dev/null +++ b/include/trace/hooks/usb.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM usb +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH trace/hooks +#if !defined(_TRACE_HOOK_USB_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_HOOK_USB_H +#include +/* + * Following tracepoints are not exported in tracefs and provide a + * mechanism for vendor modules to hook and extend functionality + */ +struct usb_device; + +DECLARE_RESTRICTED_HOOK(android_rvh_usb_dev_suspend, + TP_PROTO(struct usb_device *udev, pm_message_t msg, int *bypass), + TP_ARGS(udev, msg, bypass), 1); + +DECLARE_HOOK(android_vh_usb_dev_resume, + TP_PROTO(struct usb_device *udev, pm_message_t msg, int *bypass), + TP_ARGS(udev, msg, bypass)); + +#endif /* _TRACE_HOOK_USB_H */ +/* This part must be outside protection */ +#include