drivers: udc_dwc2: Arm control out endpoint in DMA mode #93103
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It was observed that device ceases to work in Buffer DMA mode after GET DEVICE QUALIFIER request is STALLed (when USB stack is limited to Full-Speed only operation). The issue is due to missing dout feed. Clear pending dout feed flag after bus reset (enumeration done) and after stalled control read transfer to allow dout to be feed when necessary. Signed-off-by: Tomasz Moń <[email protected]>
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jfischer-no
approved these changes
Jul 15, 2025
jfischer-no
added
area: Drivers
Experimental
raffarost
approved these changes
Jul 15, 2025
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It was observed that device ceases to work in Buffer DMA mode after GET DEVICE QUALIFIER request is STALLed (when USB stack is limited to Full-Speed only operation). The issue is due to missing dout feed.
Clear pending dout feed flag after bus reset (enumeration done) and after stalled control read transfer to allow dout to be feed when necessary.