mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-08 09:39:40 +00:00
usb: dwc2: gadget: Fix ISOC transfer complete handling for DDMA
commitdbe2518b2d
upstream. 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:729cac693e
("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>
This commit is contained in:
parent
5f4bfac261
commit
d071c7fd45
1 changed files with 1 additions and 3 deletions
|
@ -3066,9 +3066,7 @@ 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
|
||||
|
|
Loading…
Reference in a new issue