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| author | hselasky <hselasky@FreeBSD.org> | 2014-09-25 07:37:41 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2014-09-25 07:37:41 +0000 |
| commit | fd7a3a7bfd6de88f8c1a5d2d22027bbbf6df4385 (patch) | |
| tree | a4ccde712b09925226ce1fa64cff9ec02fa87b21 | |
| parent | e2c082688a770176d714a5ead716c496efd828ff (diff) | |
| download | FreeBSD-src-fd7a3a7bfd6de88f8c1a5d2d22027bbbf6df4385.zip FreeBSD-src-fd7a3a7bfd6de88f8c1a5d2d22027bbbf6df4385.tar.gz | |
MFC r271953:
Some XHCI hardware requires dropping the endpoint context before
adding it again.
Approved by: re, glebius
| -rw-r--r-- | sys/dev/usb/controller/xhci.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/dev/usb/controller/xhci.c b/sys/dev/usb/controller/xhci.c index 2b0ad00..6a4d894 100644 --- a/sys/dev/usb/controller/xhci.c +++ b/sys/dev/usb/controller/xhci.c @@ -2252,7 +2252,14 @@ xhci_configure_mask(struct usb_device *udev, uint32_t mask, uint8_t drop) xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, mask); xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, 0); } else { - xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, 0); + /* + * Some hardware requires that we drop the endpoint + * context before adding it again: + */ + xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, + mask & XHCI_INCTX_NON_CTRL_MASK); + + /* Add new endpoint context */ xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, mask); /* find most significant set bit */ |
