From: Chunfeng Yun <chunfeng....@mediatek.com>

commit 6f978a30c9bb12dab1302d0f06951ee290f5e600 upstream.

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: 94a631d91ad3 ("usb: xhci-mtk: check hcc_params after adding primary hcd")
Cc: stable <sta...@vger.kernel.org>
Signed-off-by: Chunfeng Yun <chunfeng....@mediatek.com>
Link: 
https://lore.kernel.org/r/1616482975-17841-4-git-send-email-chunfeng....@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/usb/host/xhci-mtk.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -397,6 +397,13 @@ static void xhci_mtk_quirks(struct devic
        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 platfor
        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);


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