DBC_DEBUG is defined.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 62 ++--
1 file changed, 60 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 6b23f09..b36a527 100644
--- a/drivers
file
will show users the state (disabled, enabled or configured) of the
debug port.
With a host that does NOT support debug port, "debug_port_state" file
won't be created.
Signed-off-by: Lu Baolu
---
.../ABI/testing/sysfs-bus-pci-drivers-xhci_hcd | 23 +
On 11/09/2015 05:27 PM, Steinar H. Gunderson wrote:
On Mon, Nov 09, 2015 at 01:02:50PM +0800, Lu, Baolu wrote:
We've got below facts:
1. One card works well w/ or w/o LPM enabled.
No, this isn't right. One card works well without LPM; it does work with LPM
but not well. Ther
On 11/10/2015 05:39 PM, Dave Young wrote:
Hi,
On 11/09/15 at 03:38pm, Lu Baolu wrote:
This patch series adds support for early printk through USB3 debug port.
USB3 debug port is described in xHCI specification as an optional extended
capability.
I did a test with your previous patchset
+ *
+ * Copyright (C) 2015 Intel Corp.
+ *
+ * Author: Lu Baolu
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include
+
+#include "x
On 11/11/2015 10:25 AM, Dave Young wrote:
Hi,
On 11/11/15 at 09:32am, Lu, Baolu wrote:
On 11/10/2015 05:39 PM, Dave Young wrote:
Hi,
On 11/09/15 at 03:38pm, Lu Baolu wrote:
This patch series adds support for early printk through USB3 debug port.
USB3 debug port is described in xHCI
On 11/11/2015 10:25 AM, Dave Young wrote:
[ 1616.823351] usb 2-2: new SuperSpeed USB device number 8 using xhci_hcd
[ 1616.834520] usb 2-2: LPM exit latency is zeroed, disabling LPM.
[ 1616.834856] usb 2-2: New USB device found, idVendor=1d6b, idProduct=0004
[ 1616.834858] usb 2-2: New USB devi
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-off-by: Lu Baolu
---
include/linux/usb.h | 1 -
1 file changed, 1 deletion(-)
di
-unfriendly USB devices on any released
Linux kernels.
This patch series contains a fix and a cleanup as well.
Thanks,
Baolu
Lu Baolu (3):
usb: core: lpm: fix usb3_hardware_lpm sysfs node
usb: core: lpm: add sysfs node for usb3 lpm permit
usb: core: lpm: remove usb3_lpm_enabled in
u1 (for U1) and usb3_hardware_lpm_u2
(for U2), and recording the U1/U2 LPM status in right places.
This patch should be back-ported to kernels as old as 4.3,
that contains Commit 655fe4effe0f ("usbcore: add sysfs support
to xHCI usb3 hardware LPM").
Cc: sta...@vger.kernel.org
Signed-off-by: Lu
or u2 permitted,
"u1" - only u1 is permitted, "u2" - only u2 is permitted, "u1_u2" -
both u1 and u2 are permitted. With this interface, users can use an
LPM-unfriendly USB device on a released Linux kernel.
Signed-off-by: Lu Baolu
Signed-off-by: Zhuang Jin Can
---
On 11/11/2015 11:10 PM, Alan Stern wrote:
On Wed, 11 Nov 2015, Lu Baolu wrote:
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-off-by: Lu Baolu
---
include/linux/usb.h | 2 --
1 file changed, 2 deletions(-)
di
u1 (for U1) and usb3_hardware_lpm_u2
(for U2), and recording the U1/U2 LPM status in right places.
This patch should be back-ported to kernels as old as 4.3,
that contains Commit 655fe4effe0f ("usbcore: add sysfs support
to xHCI usb3 hardware LPM").
Cc: sta...@vger.kernel.org
Signed-off-by: Lu
-unfriendly USB devices on any released
Linux kernels.
This patch series contains a fix and a cleanup as well.
Change log:
v1->v2:
Fix the "make htmldoc" warning reported by 0-day robot.
Thanks,
Baolu
Lu Baolu (3):
usb: core: lpm: fix usb3_hardware_lpm sysfs node
usb: core: l
or u2 permitted,
"u1" - only u1 is permitted, "u2" - only u2 is permitted, "u1_u2" -
both u1 and u2 are permitted. With this interface, users can use an
LPM-unfriendly USB device on a released Linux kernel.
Signed-off-by: Lu Baolu
Signed-off-by: Zhuang Jin Can
---
On 11/11/2015 10:25 AM, Dave Young wrote:
Hi,
On 11/11/15 at 09:32am, Lu, Baolu wrote:
On 11/10/2015 05:39 PM, Dave Young wrote:
Hi,
On 11/09/15 at 03:38pm, Lu Baolu wrote:
This patch series adds support for early printk through USB3 debug port.
USB3 debug port is described in xHCI specifica
On 11/13/2015 12:20 AM, Alan Stern wrote:
On Thu, 12 Nov 2015, Lu Baolu wrote:
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-
Hi Dave,
On 11/12/2015 02:01 PM, Dave Young wrote:
Hi, Baolu
On 11/12/15 at 10:45am, Lu, Baolu wrote:
>Hi Dave,
>
>Which device are you testing with? This implementation was developed
>and tested on Intel Skylake devices.
>
>It doesn't surprise me if it doesn't w
On 11/13/2015 12:20 AM, Alan Stern wrote:
On Thu, 12 Nov 2015, Lu Baolu wrote:
Commit 655fe4effe0f ("usbcore: add sysfs support to xHCI usb3
hardware LPM") introduced usb3_hardware_lpm sysfs node. This
doesn't show the correct status of USB3 U1 and U2 LPM status.
This patc
On 11/13/2015 10:26 AM, Dave Young wrote:
On 11/13/15 at 10:04am, Lu, Baolu wrote:
Hi Dave,
On 11/12/2015 02:01 PM, Dave Young wrote:
Hi, Baolu
On 11/12/15 at 10:45am, Lu, Baolu wrote:
Hi Dave,
Which device are you testing with? This implementation was developed
and tested on Intel
On 11/13/2015 11:28 PM, Alan Stern wrote:
On Fri, 13 Nov 2015, Lu, Baolu wrote:
On 11/13/2015 12:20 AM, Alan Stern wrote:
On Thu, 12 Nov 2015, Lu Baolu wrote:
Commit 655fe4effe0f ("usbcore: add sysfs support to xHCI usb3
hardware LPM") introduced usb3_hardware_lpm sysfs node. Th
-day robot.
Thanks,
Baolu
Lu Baolu (3):
usb: core: lpm: fix usb3_hardware_lpm sysfs node
usb: core: lpm: add sysfs node for usb3 lpm permit
usb: core: lpm: remove usb3_lpm_enabled in usb_device
Documentation/ABI/testing/sysfs-bus-usb | 27 +++---
Documentation/usb/power-management.t
or u2 permitted,
"u1" - only u1 is permitted, "u2" - only u2 is permitted, "u1_u2" -
both u1 and u2 are permitted. With this interface, users can use an
LPM-unfriendly USB device on a released Linux kernel.
Signed-off-by: Lu Baolu
Signed-off-by: Zhuang Jin Can
---
Commit 8306095fd2c1 ("USB: Disable USB 3.0 LPM in critical sections.")
adds usb3_lpm_enabled member to struct usb_device. There is no reference
to this member now. Hence, it could be removed.
Signed-off-by: Lu Baolu
---
include/linux/usb.h | 2 --
1 file changed, 2 deletions(-)
di
u1 (for U1) and usb3_hardware_lpm_u2
(for U2), and recording the U1/U2 LPM status in right places.
This patch should be back-ported to kernels as old as 4.3,
that contains Commit 655fe4effe0f ("usbcore: add sysfs support
to xHCI usb3 hardware LPM").
Cc: sta...@vger.kernel.org
Signed-off-by: Lu
Hi,
On 11/13/2015 11:34 PM, Dmitry Malkin wrote:
On Mon, 9 Nov 2015 15:38:33 +0800, Lu Baolu wrote:
On Intel platform, if the debug target is connected with debug
host, enabling DCE bit in command register leads to a hung bus
state. In the hung state, the host system will not see a port
This patch add dbc debug device support in usb_debug driver.
Signed-off-by: Lu Baolu
Acked-by: Johan Hovold
---
drivers/usb/serial/usb_debug.c | 28 +---
1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial
Add Documentation/usb/xhci-dbc.txt. This document includes
development status and user guide for USB3 debug port.
Signed-off-by: Lu Baolu
---
Documentation/usb/xhci-dbc.txt | 325 +
MAINTAINERS| 1 +
drivers/usb/early/xhci-dbc.c
'y' in the tty application.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 68a7139..b75c523 100644
--- a/drivers/usb/early/xhci-dbc
Add support for early printk by writing debug messages to the USB3
debug port. Users can use this type of early printk by specifying
kernel parameter of "earlyprintk=xdbc". This gives users a chance
of providing debug output.
Signed-off-by: Lu Baolu
---
Documentation/kernel-parameter
DbC might exit configured state in some cases (refer to 7.6.4.4 in
xHCI spec 1.1). Software needs detect and clear this situation by
clearing DCCTRL.DCR and wait until the DbC configured before read
or write oprations.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 28
.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 36
1 file changed, 36 insertions(+)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 8a5a51f..aaf655f 100644
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early
DBC_DEBUG is defined.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 62 ++--
1 file changed, 60 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 6b23f09..b36a527 100644
--- a/drivers
This patch adds interfaces for bulk out and bulk in ops. These
interfaces could be used to implement early printk bootconsole
or hook to various system debuggers.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 373 +++
include/linux/usb/xhci
file
will show users the state (disabled, enabled or configured) of the
debug port.
With a host that does NOT support debug port, "debug_port_state" file
won't be created.
Signed-off-by: Lu Baolu
---
.../ABI/testing/sysfs-bus-pci-drivers-xhci_hcd | 23 +++
between the
debug host and target.
Signed-off-by: Lu Baolu
---
MAINTAINERS | 7 +
arch/x86/Kconfig.debug | 12 +
drivers/usb/early/Makefile | 1 +
drivers/usb/early/xhci-dbc.c | 787 +++
include/linux/usb/xhci-dbc.h | 187
fixed_addresses table for
xHCI mmio access.
Signed-off-by: Lu Baolu
---
arch/x86/include/asm/fixmap.h | 4
1 file changed, 4 insertions(+)
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index f80d700..fbf452f 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include
a port reset to the
debug port from the host xHCI. This patch introduces this work
around.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 52
include/linux/usb/xhci-dbc.h | 2 ++
2 files changed, 54 insertions(+)
diff --git a/drivers/usb
_cap_by_id() helper.
(2) Patch 3 "bus hung state" changed to "port hung state" in commit message.
(3) Patch 12 added verified platform information.
Lu Baolu (12):
usb: xhci: add sysfs file for xHCI debug port
x86: fixmap: add permanent fixmap for xhci debug port
usb
Hi,
On 11/17/2015 06:28 PM, Dmitry Malkin wrote:
On Mon, 16 Nov 2015 10:18:42 +0800, Lu Baolu wrote:
This quirk works as well if debug host doesn't have DBC. I didn't try a
DBC-capable debug host yet.
Hi,
I went through it again, with your v3 patch series on top of vanilla v4
On 11/20/2015 10:33 PM, Mathias Nyman wrote:
On 17.11.2015 08:38, Lu Baolu wrote:
This patch adds a sysfs file for users to check 1) whether the debug
capability is implemented by hardware; 2) if supported, which state
does it stay at.
With a host that supports debug port, a file named
Add Documentation/usb/xhci-dbc.txt. This document includes
development status and user guide for USB3 debug port.
Signed-off-by: Lu Baolu
---
Documentation/usb/xhci-dbc.txt | 350 +
MAINTAINERS| 1 +
drivers/usb/early/xhci-dbc.c
This patch add dbc debug device support in usb_debug driver.
Signed-off-by: Lu Baolu
Acked-by: Johan Hovold
---
drivers/usb/serial/usb_debug.c | 28 +---
1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial
'y' in the tty application.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 6c24ba0..37c5c87 100644
--- a/drivers/usb/early/xhci-dbc
Add support for early printk by writing debug messages to the USB3
debug port. Users can use this type of early printk by specifying
kernel parameter of "earlyprintk=xdbc". This gives users a chance
of providing debug output.
Signed-off-by: Lu Baolu
---
Documentation/kernel-parameter
.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 36
1 file changed, 36 insertions(+)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index c81df40..344d93e 100644
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early
DbC might exit configured state in some cases (refer to 7.6.4.4 in
xHCI spec 1.1). Software needs detect and clear this situation by
clearing DCCTRL.DCR and wait until the DbC configured before read
or write oprations.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 28
This patch adds interfaces for bulk out and bulk in ops. These
interfaces could be used to implement early printk bootconsole
or hook to various system debuggers.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 373 +++
include/linux/usb/xhci
DBC_DEBUG is defined.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 62 ++--
1 file changed, 60 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 41ce116..6855048 100644
--- a/drivers
fixed_addresses table for
xHCI mmio access.
Signed-off-by: Lu Baolu
---
arch/x86/include/asm/fixmap.h | 4
1 file changed, 4 insertions(+)
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index f80d700..fbf452f 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include
a port reset to the
debug port from the host xHCI. This patch introduces this work
around.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 52
include/linux/usb/xhci-dbc.h | 2 ++
2 files changed, 54 insertions(+)
diff --git a/drivers/usb
de information.
(3) All patches rebased to the new usb-next branch which contains commit
d5ddcdf(xhci: rework xhci extended capability list parsing functions).
Lu Baolu (12):
usb: xhci: add sysfs file for xHCI debug port
x86: fixmap: add permanent fixmap for xhci debug port
usb: xhci: db
between the
debug host and target.
Signed-off-by: Lu Baolu
---
MAINTAINERS | 7 +
arch/x86/Kconfig.debug | 12 +
drivers/usb/early/Makefile | 1 +
drivers/usb/early/xhci-dbc.c | 774 +++
include/linux/usb/xhci-dbc.h | 187
file
will show users the state (disabled, enabled or configured) of the
debug port.
With a host that does NOT support debug port, "debug_port_state" file
won't be created.
Signed-off-by: Lu Baolu
---
.../ABI/testing/sysfs-bus-pci-drivers-xhci_hcd | 23
> configure it. Normally BIOS takes care of it.
>
> The driver for the mux is an "extcon" driver. With this we
> only register the mux if it's detected.
>
> Suggested-by: Lu Baolu
> Signed-off-by: Heikki Krogerus
> ---
> drivers/usb/host/pci-quirks.c | 3
I tried to reproduce this issue on an Intel Ivybridge machine. But I failed.
Kernel version: 4.0.0-rc1 (built against master branch of Greg's usb tree)
USB fabric:
$ sudo lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hu
exist.
so I guess I get it like 5 minutes after I send this ;)
On 2015-03-02 03:37, Lu, Baolu wrote:
Include Kenneth Johansson.
On 2015-03-02 10:33, Lu, Baolu wrote:
I tried to reproduce this issue on an Intel Ivybridge machine. But I
failed.
Kernel version: 4.0.0-rc1 (built against master bran
Hi Kenneth Johansson,
Did you still get the bandwidth error when testing it with longer time?
Thanks,
Baolu
On 2015-03-03 10:06, Lu, Baolu wrote:
cc'ed usb mailing list.
On 2015-03-02 21:23, Kenneth Johansson wrote:
I have been running 3.19 prereleases and now 3.19 and have not got
On 03/05/2015 09:17 PM, Kenneth Johansson wrote:
On 2015-03-05 03:23, Lu, Baolu wrote:
Hi Kenneth Johansson,
Did you still get the bandwidth error when testing it with longer time?
no I have not seen it on any 3.19 kernel I have used so far. But It
could take a week to see it before so
EC bit is cleared in
xhci_clear_port_change_bit().
[Mathias Nyman contributed the idea. The commit log is based on patch
posted at http://marc.info/?l=linux-kernel&m=142323612321434&w=2]
Signed-off-by: Lu Baolu
Cc: stable # v3.2+
---
drivers/usb/host/xhci-hub.c | 9 -
1 file changed, 8 insert
Hi Alan,
Do you have any comments for this patch?
Thanks,
Baolu
On 03/06/2015 04:12 PM, Lu Baolu wrote:
Linux xHCI driver doesn't report and handle port cofig error change.
If Port Configure Error for root hub port occurs, CEC bit in PORTSC
would be set by xHC and remains 1. This hap
Hi Devin,
Do you mind to post output of "lspci -xv" on the machine where you saw
this problem?
We are facing the same problems in other cases. I could provide a patch
for it later.
Thanks,
Baolu
On 01/19/2015 04:55 AM, Devin Heitmueller wrote:
Hello,
I'm debugging some issues on a couple
r
Device Status: 0x0001
Self Powered
Devin
On Tue, Mar 10, 2015 at 5:55 AM, Lu, Baolu wrote:
Hi Devin,
Do you mind to post output of "lspci -xv" on the machine where you saw this
problem?
We are facing the same problems in other cases. I could provide a patch for
it later.
On 03/11/2015 02:49 AM, Alan Stern wrote:
On Tue, 10 Mar 2015, Mathias Nyman wrote:
Mathias:
Your patch description says this:
The endpoint might already processesed some TRBs on the endpiont ring
before we soft reset the endpoint.
Make sure we set the dequeue pointer to where we were befe
uot; is not notified. As the result, the xHC
looks like dead to user.
The patch is to apply XHCI_AVOID_BEI to Intel VallyView and Lynx Point
LP devices. And it should be backported to kernels as old as 3.0, that
contains the commit 69e848c2090a ("Intel xhci: Support EHCI/xHCI port
switching.&q
On 03/12/2015 04:46 PM, Mathias Nyman wrote:
On 12.03.2015 03:39, Lu Baolu wrote:
When a device with an isochronous endpoint is plugged into the Intel
xHCI host controller, and the driver submits multiple frames per URB,
the xHCI driver will set the Block Event Interrupt (BEI) flag on all
but
On 03/12/2015 03:54 PM, Greg Kroah-Hartman wrote:
On Thu, Mar 12, 2015 at 09:39:06AM +0800, Lu Baolu wrote:
When a device with an isochronous endpoint is plugged into the Intel
xHCI host controller, and the driver submits multiple frames per URB,
the xHCI driver will set the Block Event
, the xHC looks like dead to user.
This patch is to apply XHCI_AVOID_BEI quirk to Intel xHC devices. And
it should be backported to kernels as old as 3.0, that contains the
commit 69e848c2090a ("Intel xhci: Support EHCI/xHCI port switching.").
Signed-off-by: Lu Baolu
Cc: sta...@vger.ke
, the xHC looks like dead to user.
This patch is to apply XHCI_AVOID_BEI quirk to Intel xHC devices. And
it should be backported to kernels as old as 3.0, that contains the
commit 69e848c2090a ("Intel xhci: Support EHCI/xHCI port switching.").
Signed-off-by: Lu Baolu
Tested-by: Al
The devices running at SuperSpeedPlus speed are also LPM capable.
Apply usb3 hardware LPM attributes to those devices as well.
Signed-off-by: Lu Baolu
---
drivers/usb/core/sysfs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core
Hi Greg,
On 09/05/2017 09:58 AM, Lu Baolu wrote:
> xHCI compatible USB host controllers(i.e. super-speed USB3 controllers)
> can be implemented with the Debug Capability(DbC). It presents a debug
> device which is fully compliant with the USB framework and provides the
> equivalent of
y.
>>>>>>> > >> >> >
>>>>>>> > >> >> > When the debug capability is enabled, it will present a debug
>>>>>>> > >> >> > device
>>>>>>> > >> >> >
Hi,
On 11/03/2017 02:27 PM, Greg Kroah-Hartman wrote:
> On Fri, Nov 03, 2017 at 08:45:46AM +0800, Lu Baolu wrote:
>> Hi,
>>
>> On 11/03/2017 12:51 AM, Greg Kroah-Hartman wrote:
>>> On Thu, Nov 02, 2017 at 12:38:57PM +0200, Felipe Balbi wrote:
>>>>&g
Hi,
On 11/06/2017 04:00 PM, Greg Kroah-Hartman wrote:
> On Mon, Nov 06, 2017 at 08:35:41AM +0800, Lu Baolu wrote:
>> Hi,
>>
>> On 11/03/2017 02:27 PM, Greg Kroah-Hartman wrote:
>>> On Fri, Nov 03, 2017 at 08:45:46AM +0800, Lu Baolu wrote:
>>>> Hi,
&g
# v4.12+
Cc: Johan Hovold
Signed-off-by: Lu Baolu
---
drivers/usb/serial/usb_debug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index 12f4c5a..48f285a 100644
--- a/drivers/usb/serial/usb_debug.c
+++
valid one. The description strings are changed accordingly.
This patch should be back-ported to kernels as old as v4.12,
that contain the commit aeb9dd1de98c ("usb/early: Add driver
for xhci debug capability").
Cc: # v4.12+
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.h | 6
t to remove the 700+ different ways that files in
> the kernel describe the GPL license text. And there's unneeded stuff
> like the address (sometimes incorrect) for the FSF which is never
> needed.
>
> No copyright headers or other non-license-description text was removed.
>
return -ENOMEM;
>>> +
>>> + db->buf_size = size;
>>> + db->buf_put = db->buf_buf;
>>> + db->buf_get = db->buf_buf;
>>> +
>>> + return 0;
>>> +}
> you may wanna have a look at kfifo.
>
Yeah! kfifo
USB vendor id and product id for Linux USB Debug Target is added.
Signed-off-by: Lu Baolu
---
drivers/usb/serial/usb_debug.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index ab5a2ac..47636b6 100644
--- a/drivers/usb
The kernel FIFO implementation, kfifo, provides interfaces to manipulate
a first-in-first-out circular buffer. Use kfifo instead of the homemade
one to make the code more concise and readable.
Signed-off-by: Lu Baolu
---
drivers/usb/gadget/function/u_serial.c | 192
This corrects the endpiont type value set to the DbC bulk in endpoint.
The previous value doesn't cause any problems because that we now only
use the bulk out endpoint. Set the hardware with the correct value any
way.
Signed-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 2 +-
1
Hi,
On 11/28/2017 03:29 PM, Greg Kroah-Hartman wrote:
> On Tue, Nov 28, 2017 at 12:52:24PM +0800, Lu Baolu wrote:
>> This corrects the endpiont type value set to the DbC bulk in endpoint.
>> The previous value doesn't cause any problems because that we now only
>> use
Hi Felipe,
On 11/28/2017 04:05 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> The kernel FIFO implementation, kfifo, provides interfaces to manipulate
>> a first-in-first-out circular buffer. Use kfifo instead of the homemade
>> one to make the cod
Hi Johan,
On 11/28/2017 05:01 PM, Johan Hovold wrote:
> On Tue, Nov 28, 2017 at 12:40:59PM +0800, Lu Baolu wrote:
>> USB vendor id and product id for Linux USB Debug Target is added.
>>
>> Signed-off-by: Lu Baolu
>> ---
>> drivers/usb/serial/usb_debug.c | 2 ++
Update Documentation/driver-api/usb/usb3-debug-port.rst. This update
includes the guide for using xHCI debug capability based TTY serial
link.
Cc: Mathias Nyman
Cc: Greg Kroah-Hartman
Signed-off-by: Lu Baolu
---
Documentation/driver-api/usb/usb3-debug-port.rst | 52
1
33] ? kthread_delayed_work_timer_fn+0x80/0x80
[ 528.511755] ret_from_fork+0x24/0x30
Fixes: dfba2174dc42 ("usb: xhci: Add DbC support in xHCI driver")
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-dbgcap.c | 20
drivers/usb/host/xhci-dbgtty.c | 20 --
Update the xhci dbc files with the correct SPDX license identifiers.
Fixes: dfba2174dc42 ("usb: xhci: Add DbC support in xHCI driver")
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-dbgcap.c | 1 +
drivers/usb/host/xhci-dbgcap.h | 2 +-
drivers/usb/host/xhci-dbgtty.c | 1 +
3 fil
Hi,
On 12/22/2017 04:32 PM, Philippe Ombredanne wrote:
> Lu,
>
> On Fri, Dec 22, 2017 at 2:34 AM, Lu Baolu wrote:
>> Update the xhci dbc files with the correct SPDX license identifiers.
>>
>> Fixes: dfba2174dc42 ("usb: xhci: Add DbC support in xHCI dri
Update the xhci dbc files with the correct SPDX license identifiers.
Fixes: dfba2174dc42 ("usb: xhci: Add DbC support in xHCI driver")
Cc: Philippe Ombredanne
Signed-off-by: Lu Baolu
---
changes from v1:
* Use plain C style comments in header file.
drivers/usb/host/xhci-db
Function argument ep_trb for xhci_cleanup_halted_endpoint() isn't
needed anymore. Cleanup it.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-ring.c | 11 ---
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-r
Function argument ep_trb for finish_td() isn't needed anymore.
Cleanup it.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-ring.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 642a070..88
Hi,
On 05/03/2017 06:38 AM, Boris Ostrovsky wrote:
> On 03/21/2017 04:01 AM, Lu Baolu wrote:
>> Add a simple udelay calibration in x86 architecture-specific
>> boot-time initializations. This will get a workable estimate
>> for loops_per_jiffy. Hence, udelay() cou
Hi,
On 05/30/2017 09:46 PM, Vlastimil Babka wrote:
> On 03/21/2017 09:01 AM, Lu Baolu wrote:
>> XHCI debug capability (DbC) is an optional but standalone
>> functionality provided by an xHCI host controller. Software
>> learns this capability by walking through the extended
Hi,
On 05/31/2017 02:24 PM, Steven Rostedt wrote:
> On Wed, 31 May 2017 11:27:19 +0800
> Lu Baolu wrote:
>
>
>>>> +
>>>> +#define XDBC_TRACE
>>>> +#ifdef XDBC_TRACE
>>>> +#define xdbc_trace trace_printk
>>> Did you
Hi,
On 05/31/2017 05:38 PM, Vlastimil Babka wrote:
> On 05/31/2017 05:27 AM, Lu Baolu wrote:
>> Hi,
>>
>> On 05/30/2017 09:46 PM, Vlastimil Babka wrote:
>>> On 03/21/2017 09:01 AM, Lu Baolu wrote:
>>>> XHCI debug capability (DbC) is an optional but st
d-off-by: Lu Baolu
---
drivers/usb/early/xhci-dbc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index 1268818..12fe70b 100644
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early/xhci-dbc.c
@@ -32,7 +32,6 @@
static s
Hi,
On 07/12/2017 04:02 PM, Dou Liyang wrote:
> Hi, Lu
>
> At 05/05/2017 08:50 PM, Boris Ostrovsky wrote:
>> On 05/05/2017 01:41 AM, Lu Baolu wrote:
>>> Hi,
>>>
>>> On 05/03/2017 06:38 AM, Boris Ostrovsky wrote:
>>>> On 03/21/2017 04:01 AM, Lu
Hi,
On 07/13/2017 09:39 AM, Dou Liyang wrote:
> Hi, Lu
>
> At 07/13/2017 09:17 AM, Lu Baolu wrote:
>> Hi,
>>
>> On 07/12/2017 04:02 PM, Dou Liyang wrote:
>>> Hi, Lu
>>>
>>> At 05/05/2017 08:50 PM, Boris Ostrovsky wrote:
>>>> On 0
.
Hence it can be remote accessed by a debug host. Another use case can
probably be found in servers. It provides a peer-to-peer USB link
between two host-only machines. This provides a reasonable out-of-band
communication method between two servers.
Signed-off-by: Lu Baolu
---
.../ABI/testing/sysfs
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