diff options
| author | Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> | 2021-09-11 22:58:30 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-14 10:42:00 +0200 |
| commit | dbe2518b2d8eabffa74dbf7d9fdd7dacddab7fc0 (patch) | |
| tree | 9caa9b6b9accdefd4cc6d336ef1364250d92fbc6 /drivers/usb | |
| parent | 5cf86349e98b14f505f83aae45a6df2bacc15a7a (diff) | |
| download | linux-dbe2518b2d8eabffa74dbf7d9fdd7dacddab7fc0.tar.bz2 | |
usb: dwc2: gadget: Fix ISOC transfer complete handling for DDMA
When last descriptor in a descriptor list completed with XferComplete
interrupt, core switching to handle next descriptor and assert BNA
interrupt. Both these interrupts are set while dwc2_hsotg_epint()
handler called. Each interrupt should be handled separately: first
XferComplete interrupt then BNA interrupt, otherwise last completed
transfer will not be giveback to function driver as completed
request.
Fixes: 729cac693eec ("usb: dwc2: Change ISOC DDMA flow")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/a36981accc26cd674c5d8f8da6164344b94ec1fe.1631386531.git.Minas.Harutyunyan@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index f09cbdfac9df..11d85a6e0b0d 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3067,9 +3067,7 @@ static void dwc2_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, /* In DDMA handle isochronous requests separately */ if (using_desc_dma(hsotg) && hs_ep->isochronous) { - /* XferCompl set along with BNA */ - if (!(ints & DXEPINT_BNAINTR)) - dwc2_gadget_complete_isoc_request_ddma(hs_ep); + dwc2_gadget_complete_isoc_request_ddma(hs_ep); } else if (dir_in) { /* * We get OutDone from the FIFO, so we only |