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| author | David Fries <David@Fries.net> | 2014-01-16 05:29:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-08 00:40:18 +0100 |
| commit | da78b7e74ac5964015bed78d27e1fca8bae8e29a (patch) | |
| tree | 0c50d36115a9e8634a0bc183c8f7be8d8cb202d9 /Documentation/w1 | |
| parent | w1: ds2490 reduce magic numbers (diff) | |
| download | linux-da78b7e74ac5964015bed78d27e1fca8bae8e29a.tar.xz linux-da78b7e74ac5964015bed78d27e1fca8bae8e29a.zip | |
w1: ds2490 USB setup fixes
Calling usb_reset_configuration after usb_set_interface resets the
interface that was just selected, so call reset first.
Using alternative 3 greatly speeds the one wire search.
alt 0 or 1, 10ms int, 23.16 seconds
alt 2 or 3, 1ms int, 2.99 to 3.05 seconds
Use usb_interrupt_msg not usb_bulk_msg as it is an interrupt pipe
(bulk worked, it was just technically the wrong call).
Signed-off-by: David Fries <David@Fries.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/w1')
0 files changed, 0 insertions, 0 deletions