diff options
| author | Tom Wai-Hong Tam <waihong@chromium.org> | 2011-03-22 14:01:50 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-24 09:56:46 -0700 |
| commit | 65bc17b32ce0906ff4d9cc5560b45269545a202c (patch) | |
| tree | df214711f1b411cc4fe8a49e2daeb5354925ac5a /doc | |
| parent | eb8430bab0ce7af39642417923f93760f9828901 (diff) | |
No retry for USB storage to speed up the resume time.
In the scenario, a user inserts a USB storage and boots to recovery mode, we
required the user to plug the USB out first. However, in the meantime that the
system is scanning the USB, the user plugs it out. It may need ~50sec to resume
because there are many retry there. This change makes it no retry such that it
only takes <1sec to resume.
R=clchiou@chromium.org,sjg@chromium.org
BUG=chromium-os:10500
TEST=emerge-tegra2_seaboard chromeos-u-boot-next successfully.
When the system is scanning the USB storage, plug the USB out.
It takes <1sec to resume.
Review URL: http://codereview.chromium.org/6685083
Change-Id: I7d002a879bc8f93ccc354b5fc4a28b55a88276d1
Reviewed-on: http://gerrit.chromium.org/gerrit/397
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.usb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/doc/README.usb b/doc/README.usb index 9aa4f62ddf..d84ebfc774 100644 --- a/doc/README.usb +++ b/doc/README.usb @@ -79,4 +79,6 @@ CONFIG_USB_UHCI defines the lowlevel part.A lowlevel part must be defined if using CONFIG_CMD_USB CONFIG_USB_KEYBOARD enables the USB Keyboard CONFIG_USB_STORAGE enables the USB storage devices +CONFIG_USB_STOR_NO_RETRY turns off retry in the USB storage scanning + functions to speed up the resume time CONFIG_USB_HOST_ETHER enables USB ethernet dongle support |