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Disallow interrupt requests on disabled endpoints.

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Submitted by:	Leon Dang
MFC after:	3 days
This commit is contained in:
Peter Grehan 2016-07-17 20:34:46 +00:00
parent 78cc33fd32
commit d73abd4b09
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=302972
1 changed files with 10 additions and 0 deletions
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10
usr.sbin/bhyve/pci_xhci.c
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@ -2537,9 +2537,11 @@ static int
pci_xhci_dev_intr(struct usb_hci *hci, int epctx)
{
struct pci_xhci_dev_emu *dev;
struct xhci_dev_ctx *dev_ctx;
struct xhci_trb evtrb;
struct pci_xhci_softc *sc;
struct pci_xhci_portregs *p;
struct xhci_endp_ctx *ep_ctx;
int error;
int dir_in;
int epid;
@ -2578,6 +2580,14 @@ pci_xhci_dev_intr(struct usb_hci *hci, int epctx)
goto done;
}
dev_ctx = dev->dev_ctx;
ep_ctx = &dev_ctx->ctx_ep[epid];
if ((ep_ctx->dwEpCtx0 & 0x7) == XHCI_ST_EPCTX_DISABLED) {
DPRINTF(("xhci device interrupt on disabled endpoint %d\r\n",
epid));
return (0);
}
DPRINTF(("xhci device interrupt on endpoint %d\r\n", epid));
pci_xhci_device_doorbell(sc, hci->hci_port, epid, 0);