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author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2012-08-10 18:27:11 +0200 |
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committer | Marek Vasut <marex@denx.de> | 2012-09-01 16:21:52 +0200 |
commit | 3e8581bb95899e21b01d86e9fe5ad7358bbef142 (patch) | |
tree | 0e02aae8ec843575aea8fc8bbdddf42a1a4a0bfb /drivers/usb | |
parent | 4bee5c83ea46b5c7a5670f7decd6ba2515483d9c (diff) | |
download | u-boot-imx-3e8581bb95899e21b01d86e9fe5ad7358bbef142.zip u-boot-imx-3e8581bb95899e21b01d86e9fe5ad7358bbef142.tar.gz u-boot-imx-3e8581bb95899e21b01d86e9fe5ad7358bbef142.tar.bz2 |
usb_stor_BBB_transport: Do not delay when not required
There is a 5-ms delay in usb_stor_BBB_transport, which occurs every 10 kiB of
data for fragmented fatload usb, i.e. roughly 500 ms of delay per MiB. This adds
up to quite a bit of delay if you're loading a large ramdisk.
The purpose of this delay should be to debounce the 5-V/100-mA USB power up.
This patch skips the delay if the device has already been queried as ready.
Signed-off-by: Jim Shimer <mgi2475@motorola.com>
Rework following the review:
- Rebase against the latest u-boot-usb master.
- Replace typedef with #define.
- Use the existing flags struct field instead of adding a new field.
- Remove the setter function.
- Remove the typecasts.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Cc: Jim Shimer <mgi2475@motorola.com>
Diffstat (limited to 'drivers/usb')
0 files changed, 0 insertions, 0 deletions