This is a note to let you know that I've just added the patch titled
xhci: Fix command ring stop regression in 4.11
to the 4.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xhci-fix-command-ring-stop-regression-in-4.11.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 604d02a2a66ab7f93fd3b2bde3698c29ef057b65 Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Date: Wed, 17 May 2017 18:32:05 +0300
Subject: xhci: Fix command ring stop regression in 4.11
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
commit 604d02a2a66ab7f93fd3b2bde3698c29ef057b65 upstream.
In 4.11 TRB completion codes were renamed to match spec.
Completion codes for command ring stopped and endpoint stopped
were mixed, leading to failures while handling a stopped command ring.
Use the correct completion code for command ring stopped events.
Fixes: 0b7c105a04ca ("usb: host: xhci: rename completion codes to match spec")
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-hub.c | 2 +-
drivers/usb/host/xhci-ring.c | 8 ++++----
drivers/usb/host/xhci.c | 8 ++++----
3 files changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -421,7 +421,7 @@ static int xhci_stop_device(struct xhci_
wait_for_completion(cmd->completion);
if (cmd->status == COMP_COMMAND_ABORTED ||
- cmd->status == COMP_STOPPED) {
+ cmd->status == COMP_COMMAND_RING_STOPPED) {
xhci_warn(xhci, "Timeout while waiting for stop endpoint command\n");
ret = -ETIME;
}
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -321,7 +321,7 @@ static void xhci_handle_stopped_cmd_ring
if (i_cmd->status != COMP_COMMAND_ABORTED)
continue;
- i_cmd->status = COMP_STOPPED;
+ i_cmd->status = COMP_COMMAND_RING_STOPPED;
xhci_dbg(xhci, "Turn aborted command %p to no-op\n",
i_cmd->command_trb);
@@ -1342,7 +1342,7 @@ static void handle_cmd_completion(struct
cmd_comp_code = GET_COMP_CODE(le32_to_cpu(event->status));
/* If CMD ring stopped we own the trbs between enqueue and dequeue */
- if (cmd_comp_code == COMP_STOPPED) {
+ if (cmd_comp_code == COMP_COMMAND_RING_STOPPED) {
complete_all(&xhci->cmd_ring_stop_completion);
return;
}
@@ -1397,8 +1397,8 @@ static void handle_cmd_completion(struct
break;
case TRB_CMD_NOOP:
/* Is this an aborted command turned to NO-OP? */
- if (cmd->status == COMP_STOPPED)
- cmd_comp_code = COMP_STOPPED;
+ if (cmd->status == COMP_COMMAND_RING_STOPPED)
+ cmd_comp_code = COMP_COMMAND_RING_STOPPED;
break;
case TRB_RESET_EP:
WARN_ON(slot_id != TRB_TO_SLOT_ID(
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1805,7 +1805,7 @@ static int xhci_configure_endpoint_resul
switch (*cmd_status) {
case COMP_COMMAND_ABORTED:
- case COMP_STOPPED:
+ case COMP_COMMAND_RING_STOPPED:
xhci_warn(xhci, "Timeout while waiting for configure endpoint command\n");
ret = -ETIME;
break;
@@ -1856,7 +1856,7 @@ static int xhci_evaluate_context_result(
switch (*cmd_status) {
case COMP_COMMAND_ABORTED:
- case COMP_STOPPED:
+ case COMP_COMMAND_RING_STOPPED:
xhci_warn(xhci, "Timeout while waiting for evaluate context command\n");
ret = -ETIME;
break;
@@ -3478,7 +3478,7 @@ int xhci_discover_or_reset_device(struct
ret = reset_device_cmd->status;
switch (ret) {
case COMP_COMMAND_ABORTED:
- case COMP_STOPPED:
+ case COMP_COMMAND_RING_STOPPED:
xhci_warn(xhci, "Timeout waiting for reset device command\n");
ret = -ETIME;
goto command_cleanup;
@@ -3845,7 +3845,7 @@ static int xhci_setup_device(struct usb_
*/
switch (command->status) {
case COMP_COMMAND_ABORTED:
- case COMP_STOPPED:
+ case COMP_COMMAND_RING_STOPPED:
xhci_warn(xhci, "Timeout while waiting for setup device command\n");
ret = -ETIME;
break;
Patches currently in stable-queue which might be from mathias.nyman@xxxxxxxxxxxxxxx are
queue-4.11/xhci-remove-gfp_dma-flag-from-allocation.patch
queue-4.11/xhci-apply-pme_stuck_quirk-and-missing_cas-quirk-for-denverton.patch
queue-4.11/usb-host-xhci-mem-allocate-zeroed-scratchpad-buffer.patch
queue-4.11/usb-host-xhci-plat-propagate-return-value-of-platform_get_irq.patch
queue-4.11/xhci-fix-command-ring-stop-regression-in-4.11.patch
queue-4.11/usb-xhci-fix-lock-inversion-problem.patch