diff options
| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2022-09-29 12:05:02 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-10-04 09:48:21 +0200 |
| commit | dce140e7d1bbe1105f2745cc51c229c41d3360be (patch) | |
| tree | 14f6b40c09d282b2506777c1ccd62b2991207333 /include | |
| parent | 088cafe05866861f4d5185d8919771e2d7eba763 (diff) | |
| download | barebox-dce140e7d1bbe1105f2745cc51c229c41d3360be.tar.gz barebox-dce140e7d1bbe1105f2745cc51c229c41d3360be.tar.xz | |
usb: have usb_rescan return count of enumerated devices
Some USB mass storage devices can take a comparatively long time after
vbus is applied until they can be enumerated. Board code can reissue
usb_rescan() to retry enumeration at a later time. It's useful for
board code to check whether any new devices have been detected by a
usb_rescan() call. To facilitate this, have usb_rescan() return the
number of devices found in addition to printing it to the log.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220929100502.895553-1-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/usb/usb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/usb/usb.h b/include/usb/usb.h index 39f4750916..04b433ba73 100644 --- a/include/usb/usb.h +++ b/include/usb/usb.h @@ -201,7 +201,7 @@ int usb_clear_halt(struct usb_device *dev, int pipe); int usb_string(struct usb_device *dev, int index, char *buf, size_t size); int usb_set_interface(struct usb_device *dev, int interface, int alternate); -void usb_rescan(void); +int usb_rescan(void); /* big endian -> little endian conversion */ /* some CPUs are already little endian e.g. the ARM920T */ |