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Message-Id: <1460976397-5688-59-git-send-email-lizf@kernel.org>
Date: Mon, 18 Apr 2016 18:46:04 +0800
From: lizf@...nel.org
To: stable@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Mathias Nyman <mathias.nyman@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 59/92] xhci: change xhci 1.0 only restrictions to support xhci 1.1
From: Mathias Nyman <mathias.nyman@...ux.intel.com>
3.4.112-rc1 review patch. If anyone has any objections, please let me know.
------------------
commit dca7794539eff04b786fb6907186989e5eaaa9c2 upstream.
Some changes between xhci 0.96 and xhci 1.0 specifications forced us to
check the hci version in code, some of these checks were implemented as
hci_version == 1.0, which will not work with new xhci 1.1 controllers.
xhci 1.1 behaves similar to xhci 1.0 in these cases, so change these
checks to hci_version >= 1.0
Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
drivers/usb/host/xhci-mem.c | 6 +++---
drivers/usb/host/xhci-ring.c | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 048cc38..cad4a174 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1493,10 +1493,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
* use Event Data TRBs, and we don't chain in a link TRB on short
* transfers, we're basically dividing by 1.
*
- * xHCI 1.0 specification indicates that the Average TRB Length should
- * be set to 8 for control endpoints.
+ * xHCI 1.0 and 1.1 specification indicates that the Average TRB Length
+ * should be set to 8 for control endpoints.
*/
- if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100)
+ if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8));
else
ep_ctx->tx_info |=
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3cfe7e3..02c6dc8 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -3496,8 +3496,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (start_cycle == 0)
field |= 0x1;
- /* xHCI 1.0 6.4.1.2.1: Transfer Type field */
- if (xhci->hci_version == 0x100) {
+ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+ if (xhci->hci_version >= 0x100) {
if (urb->transfer_buffer_length > 0) {
if (setup->bRequestType & USB_DIR_IN)
field |= TRB_TX_TYPE(TRB_DATA_IN);
--
1.9.1
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