From: Andiry Xu <andiry.xu@amd.com>
Date: Thu, 5 May 2011 10:14:00 +0000 (+0800)
Subject: xHCI 1.0: Isoch endpoint CErr field set
X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~21883^2~50^2~3
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=7b1fc2ea8a5fbf9487d83865456cff77d0249ea9;p=mirror_ubuntu-focal-kernel.git

xHCI 1.0: Isoch endpoint CErr field set

xHCI 1.0 specification specifies that CErr does not apply to Isoch endpoints
and shall be set to '0' for Isoch endpoints.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
---

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 543833b9dbad..04145740686c 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1190,12 +1190,12 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
 	/* FIXME dig Mult and streams info out of ep companion desc */
 
 	/* Allow 3 retries for everything but isoc;
-	 * error count = 0 means infinite retries.
+	 * CErr shall be set to 0 for Isoch endpoints.
 	 */
 	if (!usb_endpoint_xfer_isoc(&ep->desc))
 		ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(3));
 	else
-		ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(1));
+		ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(0));
 
 	ep_ctx->ep_info2 |= cpu_to_le32(xhci_get_endpoint_type(udev, ep));