mbox series

[v2,0/2] Handle core soft reset failure in pullup

Message ID 20230328160756.30520-1-quic_kriskura@quicinc.com (mailing list archive)
Headers show
Series Handle core soft reset failure in pullup | expand

Message

Krishna Kurapati March 28, 2023, 4:07 p.m. UTC 
When core soft reset timeout happens, pullup doesn't check for the
return value and proceeds setting up of event buffers and starts the
controller.

In this scneario, it is observed sometimes that the GEVTADDR LO/HI
registers read zero while we are setting the run stop bit and we end
up accessing address 0x00 leading to a crash. This series tries to
address this issue by handling the timeout and return back appropriate
error code to configfs for it to retry enumeration if it chooses to.

Link to v1: https://lore.kernel.org/all/20230322092740.28491-1-quic_kriskura@quicinc.com/

changes in v2:
Fixed comments addressing incomplete error handling in udc core

Krishna Kurapati (2):
  usb: dwc3: gadget: Bail out in pullup if soft reset timeout happens
  usb: gadget: udc: Handle gadget_connect failure during bind operation

 drivers/usb/dwc3/gadget.c     |  5 ++++-
 drivers/usb/gadget/udc/core.c | 20 ++++++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)