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
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
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
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")
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
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 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
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 ++
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,
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
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
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
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
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
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.
>
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
# 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
+++
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
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
y.
>>>>>>> > >> >> >
>>>>>>> > >> >> > When the debug capability is enabled, it will present a debug
>>>>>>> > >> >> > device
>>>>>>> > >> >> >
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
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
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-ring.c | 19 ---
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index c75cfe7..b1de9f2 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/hos
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 | 8 +++-
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
communication method between two servers.
Best regards,
Lu Baolu
---
Change log:
v1->v2:
- Add a new patch to move u_serial.c from drivers/usb/gadget/function
to drivers/usb/common/ and move u_serial.h to include/linux/usb/.
v2->v3:
- Remove the use of u_serial and add a new tty gl
.
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
Update Documentation/driver-api/usb/usb3-debug-port.rst. This update
includes the guide for using xHCI debug capability based TTY serial
link.
Signed-off-by: Lu Baolu
---
Documentation/driver-api/usb/usb3-debug-port.rst | 68
1 file changed, 68 insertions(+)
diff --git
This patch makes some static functions global to avoid duplications
in different files. These functions can be used in the implementation
of xHCI debug capability. There is no functional change.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-mem.c | 94
pointer, but xhci_disable_slot()
frees it when it detects a dead host.
This patch fixes these two problems by removing the command parameter
from xhci_disable_slot().
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
--
/?l=linux-usb&m=149362010728921&w=2
http://marc.info/?l=linux-usb&m=149252752825755&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers
306294725821&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 4
1 file changed, 4 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 3bb3075..311cded 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.
dead host.
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 129067
ux-usb&m=149252752825755&w=2
This patch set includes some fixes in xhci_disable_slot() as well
which will be used to handle USB transaction error on address
command.
This patch set is based on the top of for-usb-next branch in your
xhci tree.
Best regards,
Lu Baolu
---
Change log:
t;)
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-hub.c | 3 +++
drivers/usb/host/xhci.c | 4
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index ad89a6d..f0ae9df 100644
--- a/drivers/usb/host/x
responsibilities to
free the slot related data structure. Otherwise, memory leakage
happens.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 14 --
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 502842b..1290674 100644
Hi,
On 08/18/2017 09:31 PM, Mathias Nyman wrote:
> On 16.08.2017 05:15, Lu Baolu wrote:
>> Hi,
>>
>> On 08/15/2017 07:30 PM, Mathias Nyman wrote:
>>> On 11.08.2017 05:41, Lu Baolu wrote:
>>>> Xhci driver handles USB transaction errors on transfer events
nd.
v2->v3:
- Add checking virt dev for test mode in PATCH 1/5.
v3->v4:
- Resolve xhci->mutex locking issue in 5/5.
Lu Baolu (5):
usb: xhci: Disable slot even virt-dev is null
usb: xhci: Fix potential memory leak in xhci_disable_slot()
usb: xhci: Fix memory leak when xhci_disabl
pointer, but xhci_disable_slot()
frees it when it detects a dead host.
This patch fixes these two problems by removing the command parameter
from xhci_disable_slot().
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
--
t;)
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-hub.c | 3 +++
drivers/usb/host/xhci.c | 4
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 00721e8..6fcb98d 100644
--- a/drivers/usb/host/x
responsibilities to
free the slot related data structure. Otherwise, memory leakage
happens.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 14 --
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index cb2461a..2df601e 100644
/?l=linux-usb&m=149362010728921&w=2
http://marc.info/?l=linux-usb&m=149252752825755&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci
dead host.
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2df601
Hi,
On 08/15/2017 07:30 PM, Mathias Nyman wrote:
> On 11.08.2017 05:41, Lu Baolu wrote:
>> Xhci driver handles USB transaction errors on transfer events,
>> but transaction errors are possible on address device command
>> completion events as well.
>>
>> The
pointer, but xhci_disable_slot()
frees it when it detects a dead host.
This patch fixes these two problems by removing the command parameter
from xhci_disable_slot().
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
--
responsibilities to
free the slot related data structure. Otherwise, memory leakage
happens.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 14 --
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index cb2461a..2df601e 100644
nd.
v2->v3:
- Add checking virt dev for test mode in PATCH 1/5.
Lu Baolu (5):
usb: xhci: Disable slot even virt-dev is null
usb: xhci: Fix potential memory leak in xhci_disable_slot()
usb: xhci: Fix memory leak when xhci_disable_slot() returns error
usb: xhci: Return erro
/?l=linux-usb&m=149362010728921&w=2
http://marc.info/?l=linux-usb&m=149252752825755&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci
dead host.
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2df601
t;)
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-hub.c | 3 +++
drivers/usb/host/xhci.c | 4
2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 00721e8..6fcb98d 100644
--- a/drivers/usb/host/x
Hi,
On 08/10/2017 06:00 PM, Mathias Nyman wrote:
> On 10.08.2017 03:35, Lu Baolu wrote:
>> Hi,
>>
>> On 08/09/2017 03:58 PM, Mathias Nyman wrote:
>>> On 27.07.2017 05:21, Lu Baolu wrote:
>>>> xhci_disable_slot() is a helper for disabling a slot when a de
Hi,
On 08/09/2017 03:58 PM, Mathias Nyman wrote:
> On 27.07.2017 05:21, Lu Baolu wrote:
>> xhci_disable_slot() is a helper for disabling a slot when a device
>> goes away or recovers from error situations. Currently, it checks
>> the corespoding virt-dev pointer and returns
Hi,
On 08/08/2017 02:14 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>>> Lu Baolu writes:
>>>> The component u_serial provides a glue layer between TTY layer
>>>> and a USB gadget device needed to provide a basic serial port
>>>>
Hi,
On 08/07/2017 04:13 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> The component u_serial provides a glue layer between TTY layer
>> and a USB gadget device needed to provide a basic serial port
>> functionality. Currently, u_serial sits under gadget
.
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
This patch makes some static functions global to avoid duplications
in different files. These functions can be used in the implementation
of xHCI debug capability. There is no functional change.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-mem.c | 94
Update Documentation/driver-api/usb/usb3-debug-port.rst. This update
includes the guide for using xHCI debug capability based TTY serial
link.
Signed-off-by: Lu Baolu
---
Documentation/driver-api/usb/usb3-debug-port.rst | 68
1 file changed, 68 insertions(+)
diff --git
communication method between two servers.
Best regards,
Lu Baolu
---
Change log:
v1->v2:
- Add a new patch to move u_serial.c from drivers/usb/gadget/function
to drivers/usb/common/ and move u_serial.h to include/linux/usb/.
Lu Baolu (4):
usb: xhci: Make some static functions global
-off-by: Lu Baolu
---
drivers/usb/Kconfig|3 +
drivers/usb/Makefile |3 +-
drivers/usb/common/Makefile|1 +
drivers/usb/common/u_serial.c | 1604 +++
drivers/usb/gadget/Kconfig |3
]
|__enqueue <[ring enqueue pointer]
|__trbs <---[ring trbs]
Signed-off-by: Lu Baolu
---
Change log:
v1->v2:
- No need to check return valuse of debugfs interfaces.
- Remove file entries when adding end
In the xhci_add_endpoint(), a new ring was allocated and saved at
xhci_virt_ep->new_ring. Hence, when error happens, we need to free
the allocated ring before returning error.
Current code frees xhci_virt_ep->ring instead of the new_ring. This
patch fixes this.
Signed-off-by: Lu
Hi Greg,
On 07/29/2017 09:34 PM, Greg KH wrote:
> On Sat, Jul 29, 2017 at 04:18:03PM +0800, Lu Baolu wrote:
>> +static void xhci_debugfs_create_files(struct xhci_hcd *xhci,
>> + struct xhci_file_map *files,
>> +
]
|__enqueue <[ring enqueue pointer]
|__trbs <---[ring trbs]
Signed-off-by: Lu Baolu
---
drivers/usb/host/Makefile | 4 +
drivers/usb/host/xhci-debugfs.c | 552
drivers/usb/host/
Hi,
On 07/27/2017 03:55 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> Xhci driver handles USB transaction errors on transfer events,
>> but transaction errors are possible on address device command
>> completion events as well.
>>
>> The xHCI sp
ux-usb&m=149252752825755&w=2
This patch set includes some fixes in xhci_disable_slot() as well
which will be used to handle USB transaction error on address
command.
---
Change log:
v1->v2:
- include 4 fixes in xhci_disable_slot which will be used
to handle USB transaction error on address co
responsibilities to
free the slot related data structure. Otherwise, memory leakage
happens.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 14 --
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index cb2461a..2df601e 100644
/?l=linux-usb&m=149362010728921&w=2
http://marc.info/?l=linux-usb&m=149252752825755&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci
dead host.
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2df601
t;)
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 4
1 file changed, 4 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index b2ff1ff..e69073f 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3567,11 +3567,7 @@ int xh
pointer, but xhci_disable_slot()
frees it when it detects a dead host.
This patch fixes these two problems by removing the command parameter
from xhci_disable_slot().
Fixes: f9e609b82479 ("usb: xhci: Add helper function xhci_disable_slot().")
Cc: Guoqing Zhang
Signed-off-by: Lu Baolu
--
Hi,
On 07/26/2017 01:11 PM, Xing, Zhengjun wrote:
>
>
> On 7/25/2017 1:09 PM, Lu Baolu wrote:
>> Xhci driver handles USB transaction errors on transfer events,
>> but transaction errors are possible on address device command
>> completion events as well.
>>
&
/?l=linux-usb&m=149362010728921&w=2
http://marc.info/?l=linux-usb&m=149252752825755&w=2
Suggested-by: Mathias Nyman
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci
Hi Felipe,
On 07/21/2017 06:31 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> +static void xhci_dbc_stop(struct xhci_hcd *xhci)
>> +{
>> +struct xhci_dbc *dbc = xhci->dbc;
>> +
>> +WARN_ON(!dbc);
>> +
>> +cancel_del
This patch makes some static functions global to avoid duplications
in different files. These functions can be used in the implementation
of xHCI debug capability. There is no functional change.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-mem.c | 94
communication method between two servers.
Best regards,
Lu Baolu
Lu Baolu (3):
usb: xhci: Make some static functions global
usb: xhci: Add DbC support in xHCI driver
usb: doc: Update document for USB3 debug port usage
.../ABI/testing/sysfs-bus-pci-drivers-xhci_hcd | 25
Update Documentation/driver-api/usb/usb3-debug-port.rst. This update
includes the guide for using xHCI debug capability based TTY serial
link.
Signed-off-by: Lu Baolu
---
Documentation/driver-api/usb/usb3-debug-port.rst | 68
1 file changed, 68 insertions(+)
diff --git
.
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
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
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
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 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
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 05/30/2017 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 05/03/2017 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 03/21/2017 07:33 PM, Ingo Molnar wrote:
>> Lu Baolu (5):
>> > x86: add simple udelay calibration
>> > usb: early: add driver for xhci debug capability
>> > x86: add support for earlyprintk via USB3 debug port
>> > usb: serial: add dbc de
gt;v2:
- Refactor the duplicate code in xdbc_early_start() and
xdbc_handle_external_reset().
- Free resources when hardware not used any more.
- Refine the user guide document.
Lu Baolu (5):
x86: add simple udelay calibration
usb: early: add driver for xhci debug capability
x86: add support
ory blocks.
This requires to delay setting up debugging hardware and
registering boot console until the memblocks are filled.
Cc: Ingo Molnar
Cc: x...@kernel.org
Signed-off-by: Lu Baolu
---
Documentation/admin-guide/kernel-parameters.txt | 1 +
arch/x86/kernel/early_printk.c | 5 +
Add Documentation/usb/usb3-debug-port.rst. This document includes
the guide for using USB3 debug port.
Cc: linux-...@vger.kernel.org
Signed-off-by: Lu Baolu
---
Documentation/usb/usb3-debug-port.rst | 100 ++
1 file changed, 100 insertions(+)
create mode 100644
This patch adds dbc debug device support to the 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
Add a simple udelay calibration in x86 architecture-specific
boot-time initializations. This will get a workable estimate
for loops_per_jiffy. Hence, udelay() could be used after this
initialization.
Cc: Ingo Molnar
Cc: x...@kernel.org
Signed-off-by: Lu Baolu
---
arch/x86/kernel/setup.c | 22
when your machine crashes very early before the regular
console code is initialized. Other uses include simpler,
lockless logging instead of a full-blown printk console
driver and klogd.
Cc: Ingo Molnar
Cc: Mathias Nyman
Signed-off-by: Lu Baolu
---
arch/x86/Kconfig.debug| 23 +
dr
ce enumerated by this
> driver?
> 2. If "yes" on 1, does that DSDT contain _DSD method for the device?
> 3. If "no" on 2, how is it supposed to work at all?
>
> So, regarding on the answers, I am in between of reverting
>
> commit 942c7924a51edb75baf805679141
Hi Ingo,
On 03/16/2017 03:17 PM, Ingo Molnar wrote:
> * Lu Baolu wrote:
>
>> Hi Ingo,
>>
>> On 03/02/2017 02:40 PM, Ingo Molnar wrote:
>>> * Lu Baolu wrote:
>>>
>>>> Hi Ingo,
>>>>
>>>> How about this version? Any fu
Hi Ingo,
On 03/02/2017 02:40 PM, Ingo Molnar wrote:
> * Lu Baolu wrote:
>
>> Hi Ingo,
>>
>> How about this version? Any further comments?
> So I have re-read the review feedback I gave on Jan 19 and found at least one
> thing I pointed out that you didn't ad
Hi Ingo,
How about this version? Any further comments?
Best regards,
Lu Baolu
On 02/14/2017 10:27 AM, Lu Baolu wrote:
> xHCI debug capability (DbC) is an optional but standalone
> functionality provided by an xHCI host controller. With DbC
> hardware initialized, the system will
dwc3_log_msg trace class isn't used any more. Suggest to remove it.
Signed-off-by: Lu Baolu
---
drivers/usb/dwc3/trace.h | 25 -
1 file changed, 25 deletions(-)
diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h
index 2b124f9..69671e4 100644
--- a/dr
Hi,
On 02/15/2017 04:56 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>>> Lu Baolu writes:
>>>> diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
>>>> index 1ac2cdf..c31eeaf 100644
>>>> --- a/drivers/usb/host
Hi,
On 02/15/2017 04:00 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> XHCI driver has defined xhci_log_ctx trace events to trace
>> the change of an xhci input or output context. This patch
>> extends the trace class of xhci_log_ctx to print out the
>>
Hi,
On 02/15/2017 03:58 PM, Felipe Balbi wrote:
> Hi,
>
> Lu Baolu writes:
>> diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
>> index 1ac2cdf..c31eeaf 100644
>> --- a/drivers/usb/host/xhci-trace.h
>> +++ b/drivers/usb/host/
plugin.
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-hub.c | 2 +
drivers/usb/host/xhci-ring.c | 13 +--
drivers/usb/host/xhci-trace.h | 90 +++
drivers/usb/host/xhci.c | 7
4 files changed, 108 insertions(+), 4 deletions(-)
diff
XHCI context changes have already been traced by the trace
events. It's unnecessary to put the same message in kernel
log. This patch removes the use of xhci_dbg_ctx().
Signed-off-by: Lu Baolu
---
drivers/usb/host/xhci-dbg.c | 143
drivers/usb
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