mirror of
https://github.com/torvalds/linux
synced 2024-09-21 19:47:35 +00:00
usb: xhci-mtk: fix broken streams issue on 0.96 xHCI
The MediaTek 0.96 xHCI controller on some platforms does not
support bulk stream even HCCPARAMS says supporting, due to MaxPSASize
is set a default value 1 by mistake, here use XHCI_BROKEN_STREAMS
quirk to fix it.
Fixes: 94a631d91a
("usb: xhci-mtk: check hcc_params after adding primary hcd")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1616482975-17841-4-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
5aef629704
commit
6f978a30c9
|
@ -397,6 +397,13 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci)
|
|||
xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
|
||||
if (mtk->lpm_support)
|
||||
xhci->quirks |= XHCI_LPM_SUPPORT;
|
||||
|
||||
/*
|
||||
* MTK xHCI 0.96: PSA is 1 by default even if doesn't support stream,
|
||||
* and it's 3 when support it.
|
||||
*/
|
||||
if (xhci->hci_version < 0x100 && HCC_MAX_PSA(xhci->hcc_params) == 4)
|
||||
xhci->quirks |= XHCI_BROKEN_STREAMS;
|
||||
}
|
||||
|
||||
/* called during probe() after chip reset completes */
|
||||
|
@ -548,7 +555,8 @@ static int xhci_mtk_probe(struct platform_device *pdev)
|
|||
if (ret)
|
||||
goto put_usb3_hcd;
|
||||
|
||||
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
|
||||
if (HCC_MAX_PSA(xhci->hcc_params) >= 4 &&
|
||||
!(xhci->quirks & XHCI_BROKEN_STREAMS))
|
||||
xhci->shared_hcd->can_do_streams = 1;
|
||||
|
||||
ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
|
||||
|
|
Loading…
Reference in a new issue