diff options
| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2014-04-15 21:34:30 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2014-12-17 04:53:43 +0100 |
| commit | 7faff543da105342a48e8df5e5ec1562848bffb7 (patch) | |
| tree | 3b58cfa62ad8a0b7c312e55a047b3f6935cc338c /payloads/libpayload/drivers/usb | |
| parent | f574a327eed82ce00ea94d3f904f3dd8001d240c (diff) | |
libpayload: usb: Detach unused USB devices
If a payload decides not to use a USB device then the device can be
detached. This prevents the device from interfering with normal
operation on some platforms. Also, it aligns the behavior of
usb_generic_init with class-specific init functions such as
usb_msc_init, which will detach unsupported devices.
BUG=None
TEST=Manual on Squawks. Test recovery boot w/ USB 2.0 media, verify
that media boots and no babble error is encountered.
BRANCH=rambi
Change-Id: I8fb30951d273e4144cda214a30a2e86df90f2c1c
Original-Change-Id: Iee522344558749603defb2966e18765aa195dae2
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/195401
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit f7778ace68c9bee8dfab2b263e5dd054fc50c3bb)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7830
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'payloads/libpayload/drivers/usb')
| -rw-r--r-- | payloads/libpayload/drivers/usb/usb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/usb.c b/payloads/libpayload/drivers/usb/usb.c index eb23760033..25bd954ded 100644 --- a/payloads/libpayload/drivers/usb/usb.c +++ b/payloads/libpayload/drivers/usb/usb.c @@ -636,4 +636,9 @@ usb_generic_init (usbdev_t *dev) if (usb_generic_create) usb_generic_create(dev); + + if (dev->data == NULL) { + usb_debug("Detaching device not used by payload\n"); + usb_detach_device(dev->controller, dev->address); + } } |