usb: dwc3: gadget: Don't send unintended link state change

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DCTL.ULSTCHNGREQ is a write-only field. When doing a read-modify-write
to DCTL, the driver must make sure that there's no unintended link state
change request from whatever is read from DCTL.ULSTCHNGREQ. Set link
state change to no-action when the driver writes to DCTL.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Thinh Nguyen 2019-10-23 19:15:43 -07:00 • committed by Greg Kroah-Hartman

parent 704a940d55

commit 5b738211fb

2 changed files with 21 additions and 9 deletions

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16

drivers/usb/dwc3/gadget.c

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14

drivers/usb/dwc3/gadget.h

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