On Sun, 3 Jun 2007, Oliver Neukum wrote:
Am Sonntag, 3. Juni 2007 12:36 schrieb Justin Piszcz:
On Sun, 3 Jun 2007, Jiri Kosina wrote:
On Sat, 2 Jun 2007, Justin Piszcz wrote:
failed to claim USB device, trying 2 more time(s)...
detaching kernel driver from USB device...
Could you please provide strace outputs (or put it on the web somewhere if
it's too big) for the failing and succeeding claiming of the device?
static int usbdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
struct dev_state *ps = file->private_data;
struct usb_device *dev = ps->dev;
void __user *p = (void __user *)arg;
int ret = -ENOTTY;
if (!(file->f_mode & FMODE_WRITE))
return -EPERM;
That check fails as your application falls back to opening read only in
case of insufficient permissions. Did you change some udev rules?
Regards
Oliver
Nope and just to verify that I made sure I tested this a couple times.
Booted 2.6.21.3 no problems, then booted 2.6.23-rc3 w/out your patch,
problem happens again.
Justin.
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