>
> Thank you, that sounds like the best approach.
> In this case I think perhaps the long wait without any data is an
> problem with the imx6 Chipidea USB controller.
> >>>
> >>> What's the possible problem?
> >>
> >> Sorry for the delay in replying, I have been getting some
>
> FunctionFS is very specific, because read/write operations are
> directly translated into USB requests, which are asynchronous, so
> you cannot use O_NONBLOCK.
>
> If you need non-blocking API you can use Asynchronous I/O (AIO). You
> can find some examples in kernel
> >>>
> >>> FunctionFS is very specific, because read/write operations are
> >>> directly translated into USB requests, which are asynchronous, so
> >>> you cannot use O_NONBLOCK.
> >>>
> >>> If you need non-blocking API you can use Asynchronous I/O (AIO). You
> >>> can find some examples in kern
> On Wed, Apr 01, 2015 at 06:29:05PM +0100, Baxter, Jim wrote:
>>>
>>> FunctionFS is very specific, because read/write operations are directly
>>> translated into USB requests, which are asynchronous, so you cannot use
>>> O_NONBLOCK.
>>>
>>> If you need non-blocking API you can use Asynchronous I
On Wed, Apr 01, 2015 at 06:29:05PM +0100, Baxter, Jim wrote:
> >
> > FunctionFS is very specific, because read/write operations are directly
> > translated into USB requests, which are asynchronous, so you cannot use
> > O_NONBLOCK.
> >
> > If you need non-blocking API you can use Asynchronous I/
>
> FunctionFS is very specific, because read/write operations are directly
> translated into USB requests, which are asynchronous, so you cannot use
> O_NONBLOCK.
>
> If you need non-blocking API you can use Asynchronous I/O (AIO). You can
> find some examples in kernel sources (tools/usb/ffs-ai
Hi,
On 03/31/2015 08:53 PM, Baxter, Jim wrote:
> Hi,
>
> I have been looking at an issue where a phone that is the Function FS
> host sometimes locks up and causes the function:
> static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data
> *io_data) in drivers/usb/gadget/function/f_fs.c
Hi,
(it helps if you Cc the maintainer too :-)
On Tue, Mar 31, 2015 at 07:53:39PM +0100, Baxter, Jim wrote:
> I have been looking at an issue where a phone that is the Function FS
> host sometimes locks up and causes the function:
which USB controller ? which kernel ? which platform ?
> static
Hi,
I have been looking at an issue where a phone that is the Function FS
host sometimes locks up and causes the function:
static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data
*io_data) in drivers/usb/gadget/function/f_fs.c to timeout after
MAX_SCHEDULE_TIMEOUT jiffies.
We are openi
