A customer using a device with USBDEVFS is reporting following
backtrace (it seems to be a rather generic issue related to linux usb
3.0 in general):
According to him this problem is reproducible as soon as he starts the
data transfer, is there anything known about that?
He is using 3.12.0-031200-
On Tue, 24 Dec 2013, Smilen Dimitrov wrote:
> Hi all,
>
> Apologies for somewhat of a cross-post; I have already tried to ask about
> this here:
>
> Reliable Linux kernel timestamps (or adjustment thereof) with both usbmon
> and ftrace?
>
> http://stackoverflow.com/questions/20417897/rel
According to CY7C67300 specification HPI read and write cycle duration
Tcyc must be at least 6T long, where T is 1/48MHz, which is 125ns.
Without this delay fast host processor cannot write to chip registers.
Add proper ndelay to hpi_{read,write}_reg.
Signed-off-by: Max Filippov
---
drivers/usb/
Hello,
there are two fixes for the CY7C67x00 host controller:
one fixes memory allocation with non-atomic flags in the atomic context,
the other adds proper delays to the register access methods which makes
possible to use the chip with fast host CPU.
Max Filippov (2):
USB: c67x00: move URB pri
This fixes the following warning:
BUG: sleeping function called from invalid context at mm/slub.c:940
in_atomic(): 1, irqs_disabled(): 1, pid: 17, name: khubd
CPU: 0 PID: 17 Comm: khubd Not tainted 3.12.0-4-g938dd60-dirty #1
__might_sleep+0xbe/0xc0
kmem_cache_alloc_trace+0x36/0x17
On Tue, 24 Dec 2013, Du, ChangbinX wrote:
> > > usb_hub_to_struct_hub() can return NULL if the hub without active
> > > configuration. So the result must be checked.
> > >
> > > BUG: unable to handle kernel NULL pointer dereference at 015c
>
> > How did you manage to trigger this BUG? If hub
Hi,
On Thursday 05 December 2013 01:44 PM, Vivek Gautam wrote:
Hi Kishon,
On Wed, Dec 4, 2013 at 7:58 PM, Kishon Vijay Abraham I wrote:
Hi Vivek,
On Wednesday 20 November 2013 09:14 PM, Kishon Vijay Abraham I wrote:
Hi,
On Wednesday 20 November 2013 03:02 PM, Vivek Gautam wrote:
On Wed,
>>This is a bug in user space. FUNCTIONFS_DISABLE event means the host
>>has chosen a configuration with given function disabled. User-space
>>should clean up it's state, as any pending requests of any >> kind are
>>now invalid. It should not close all of the ep files.
On Tue, Dec 24 2013, rosh
>>This is a bug in user space. FUNCTIONFS_DISABLE event means the host has
>>chosen a configuration with given function disabled. User-space should clean
>>up it's state, as any pending requests of any >> kind are now invalid. It
>>should not close all of the ep files.
Then, I would say this
Reviewed-by: Ilija Hadzic
On Tue, 24 Dec 2013, Valentina Manea wrote:
As of Matt Mooney's major refactoring in 2011, usbip port
option was left out. Add support for this option in
a manner similar to the old implementation.
Sample output:
Imported USB devices
Port 00:
On Tue, Dec 24 2013, roshan.jhal...@broadcom.com wrote:
> I agree with your point. But this doesn’t work when used this driver
> in Android platform. Kernel driver sends USB_DISCONNECT event even in
> BUS reset case and by that time USB disconnect is not expected from
> FunctionFs driver.
>
> More
Hi all,
Apologies for somewhat of a cross-post; I have already tried to ask about this
here:
Reliable Linux kernel timestamps (or adjustment thereof) with both usbmon and
ftrace?
http://stackoverflow.com/questions/20417897/reliable-linux-kernel-timestamps-or-adjustment-thereof-with-both-u
> From: Alan Stern [mailto:st...@rowland.harvard.edu]
> Sent: Monday, December 23, 2013 11:13 PM
> To: Du, ChangbinX
> Cc: gre...@linuxfoundation.org; sarah.a.sh...@linux.intel.com; Lan, Tianyu;
> burzalod...@gmail.com; linux-usb@vger.kernel.org;
> linux-ker...@vger.kernel.org
> Subject: Re: [PATCH
>> This function is called whenever an ep file is released by user space (be it
>> ep0 file or the other “regular” ep files). It is complementary to the
>> ffs_data_opened function which in tandem track whether >> at least one
>> epfile is open.
>> The way it works is that if user space closes
From: Wei Yongjun
Remove unneeded error handling on the result of a call
to platform_get_resource() when the value is passed to
devm_ioremap_resource().
Signed-off-by: Wei Yongjun
---
drivers/usb/phy/phy-keystone.c | 5 -
1 file changed, 5 deletions(-)
diff --git a/drivers/usb/phy/phy-key
On Tue, Dec 24 2013, roshan.jhal...@broadcom.com wrote:
>> Do you have a patch that does that? It would help in analysing the
>> issue. Something quick and dirty will do just to see.
> Please refer patch below. I am not so good in gadgetFs, so just tried
> to hack this issue as per the following
>> Do you have a patch that does that? It would help in analysing the issue.
>> Something quick and dirty will do just to see.
Please refer patch below. I am not so good in gadgetFs, so just tried to hack
this issue as per the following:
Signed-off-by: Roshan Jhalani
---
drivers/usb/gadget/c
On 12/24/2013 8:20 AM, Michal Nazarewicz wrote:
> On Mon, Dec 23 2013, Manu Gautam wrote:
>> Allow userspace to pass SuperSpeed descriptors and
>> handle them in the driver accordingly.
>> This change doesn't modify existing desc_header and thereby
>> keeps the ABI changes backward compatible i.e.
Allow userspace to pass SuperSpeed descriptors and
handle them in the driver accordingly.
This change doesn't modify existing desc_header and thereby
keeps the ABI changes backward compatible i.e. existing
userspace drivers compiled with old header (functionfs.h)
would continue to work with the upd
As of Matt Mooney's major refactoring in 2011, usbip port
option was left out. Add support for this option in
a manner similar to the old implementation.
Sample output:
Imported USB devices
Port 00: at Full Speed(12Mbps)
unknown vendor : unknown product (1687:6211)
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