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| author |   Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2019-12-18 18:14:50 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-15 10:39:23 +0100 |
| commit | da10bcdd6f70dc9977f2cf18f4783cf78520623a (patch) | |
| tree | 46d2b92b7e1631d494cc14e6800b61c3b9236de2 /drivers/usb/dwc3/core.h | |
| parent | usb: dwc3: gadget: Check END_TRANSFER completion (diff) | |
| download | linux-dev-da10bcdd6f70dc9977f2cf18f4783cf78520623a.tar.xz linux-dev-da10bcdd6f70dc9977f2cf18f4783cf78520623a.zip | |
usb: dwc3: gadget: Delay starting transfer
If the END_TRANSFER command hasn't completed yet, then don't send the
START_TRANSFER command. The controller may not be able to start if
that's the case. Some controller revisions depend on this. See
commit 76a638f8ac0d ("usb: dwc3: gadget: wait for End Transfer to
complete"). Let's only send START_TRANSFER command after the
END_TRANSFER command had completed.
Fixes: 3aec99154db3 ("usb: dwc3: gadget: remove DWC3_EP_END_TRANSFER_PENDING")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index da0af11fbc1a..77c4a9abe365 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -690,6 +690,7 @@ struct dwc3_ep { #define DWC3_EP_TRANSFER_STARTED BIT(3) #define DWC3_EP_END_TRANSFER_PENDING BIT(4) #define DWC3_EP_PENDING_REQUEST BIT(5) +#define DWC3_EP_DELAY_START BIT(6) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN BIT(31) |