Hello
I would like to make a device driver for printer.
So, I want to use g_serial to develop device driver, but there are some
questions.
There are two requests. Those are Standard Request and Class-Specific
Request.
In g_serial, it handles Standard Request in gs_setup function which is
called by
> Yes, because the HCD may need to allocate space from its private pools
> based on the total length of the URB's transfer buffer.
>
> It's unclear to me to what extent all these things really need to be
> allocated beforehand, however. Certainly for things like usb-storage it
> makes sense to
On Wed, 21 Jul 2004, Oliver Neukum wrote:
> Am Mittwoch, 21. Juli 2004 18:17 schrieb Matthew Dharm:
> > The only idea I had was to force URBs to be allocated in a manner such that
> > they are associated with a device (and thus, by implication, with a
> > particular controller and it's DMA pool).
Am Mittwoch, 21. Juli 2004 18:17 schrieb Matthew Dharm:
> The only idea I had was to force URBs to be allocated in a manner such that
> they are associated with a device (and thus, by implication, with a
> particular controller and it's DMA pool). Then, we can make any
> allocations that the core
Hi,
I am trying to talk to a mobile phone using a usb serial cable
(Siemens DCA-510 cable and SL55 phone). This fails with a "Protocol
error" when scmxx tries to open /dev/tts/USB0. The driver is toast after
the test, apparently having been released twice (see lsmod list below:
pl2303 Used by (-
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I've been thinking about the way we allocate URBs and other data
structures.
Occasionally (over the last indeterminate time period), I've seen bugs crop
up which are basically caused by problematic memory allocations. This
tends to bite usb-storage more than anyone else because usb-storage is tie
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On Wed, 21 Jul 2004, David Anderson wrote:
>
> The camera is a Casio QVR-40, and my machine is running Fedora Core 2 (kernel
> 2.6.5-1.358)
>
> usb 2-1: new full speed USB device using address 2
> SCSI subsystem initialized
> Initializing USB Mass Storage driver...
> usb-storage: This device (0
On Wed, 21 Jul 2004, RChan wrote:
> Dear all,
>
> I had forgotten my motherboard Intel EHCI/UHCI device because up to
> 2.6.6 vanilla
> I would receive hard lock-ups the moment anything was plugged in (e.g.
> Knoppix 2004_05_17
> almost exactly vanilla kernel); I was using an NEC PCI add-in car
The camera is a Casio QVR-40, and my machine is running Fedora Core 2 (kernel
2.6.5-1.358)
usb 2-1: new full speed USB device using address 2
SCSI subsystem initialized
Initializing USB Mass Storage driver...
usb-storage: This device (07cf,1001,5010 S 05 P 01) has an unneeded Protocol
entry in
hi,all
USB Host control chip is ISP1161.Used Targo`s isp1161 HC driver.
The camera chip is ov511+, and the sensor is ov7620. Used v1.63 ov511
device driver.
Now I can capture a image from the camera,but the pictuer is abnormity
and after I capture it always occor this error:
ov511
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