diff options
| author | Cristian Birsan <cristian.birsan@microchip.com> | 2019-10-04 20:10:54 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2019-10-27 08:58:45 +0200 |
| commit | ba3a1a915c49cc3023e4ddfc88f21e7514e82aa4 (patch) | |
| tree | 99a41defc055abbbee2dcb646526f5de41982f3a /drivers | |
| parent | e92f30ac37d12756aeb733538ad85df2be7e139f (diff) | |
| download | linux-ba3a1a915c49cc3023e4ddfc88f21e7514e82aa4.tar.gz | |
usb: gadget: udc: atmel: Fix interrupt storm in FIFO mode.
Fix interrupt storm generated by endpoints when working in FIFO mode.
The TX_COMPLETE interrupt is used only by control endpoints processing.
Do not enable it for other types of endpoints.
Fixes: 914a3f3b3754 ("USB: add atmel_usba_udc driver")
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/udc/atmel_usba_udc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 86ffc8307864..1d0d8952a74b 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -449,9 +449,11 @@ static void submit_request(struct usba_ep *ep, struct usba_request *req) next_fifo_transaction(ep, req); if (req->last_transaction) { usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY); - usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE); + if (ep_is_control(ep)) + usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE); } else { - usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + if (ep_is_control(ep)) + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY); } } |