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authorKeith Packard <keithp@keithp.com>2012-06-27 14:35:56 -0700
committerKeith Packard <keithp@keithp.com>2012-06-27 14:35:56 -0700
commite63d624f9670b5e2e002fcd5f24b80cf7f1effdf (patch)
tree2a8b65d119e340643e463ad9873186502646823d /src/drivers/ao_packet.c
parent08a4ed8fe794a2b2b52147bd5535fe0954822e95 (diff)
altos: reorder stm USB state stores to avoid races
Must set ao_usb_in_pending before telling USB about new data or an interrupt could arrive at the wrong time to clear it. Same for ao_usb_in_flushed. Without these changes, I've seen the USB bus lock up on occasion, waiting for an IN packet to consume data, but with no IN data pending in the hardware. Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/drivers/ao_packet.c')
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