linux-kernel - [PATCH v2] xhci: Disable stream for xHC controller with XHCI_BROKEN

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Message-Id: <20250618074648.109879-1-xiehongyu1@kylinos.cn>
Date: Wed, 18 Jun 2025 15:46:48 +0800
From: xiehongyu1@...inos.cn
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org,
	mathias.nyman@...el.com,
	oneukum@...e.de,
	Hongyu Xie <xiehongyu1@...inos.cn>,
	stable@...r.kernel.org
Subject: [PATCH v2] xhci: Disable stream for xHC controller with XHCI_BROKEN_STREAMS

From: Hongyu Xie <xiehongyu1@...inos.cn>

Disable stream for platform xHC controller with broken stream.

Fixes: 14aec589327a6 ("storage: accept some UAS devices if streams are unavailable")
Cc: stable@...r.kernel.org # 5.4
Signed-off-by: Hongyu Xie <xiehongyu1@...inos.cn>
---
 drivers/usb/host/xhci-plat.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 6dab142e72789..c79d5ed48a08b 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -328,7 +328,8 @@ int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const s
 	}
 
 	usb3_hcd = xhci_get_usb3_hcd(xhci);
-	if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4)
+	if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4 &&
+	    !(xhci->quirks & XHCI_BROKEN_STREAMS))
 		usb3_hcd->can_do_streams = 1;
 
 	if (xhci->shared_hcd) {
-- 
2.25.1