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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-09-01 02:57:02 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-09-01 02:57:02 -0300 |
| commit | f8dbab29f4d4b977a56776af0d5296b0e6386aef (patch) | |
| tree | 2e35f68d206894b6298fc4e4c1fe7cc887d3a0f1 /drivers/staging/tm6000/tm6000-core.c | |
| parent | d657229ac4378700976fb2333c7433c5ea379d08 (diff) | |
| download | op-kernel-dev-f8dbab29f4d4b977a56776af0d5296b0e6386aef.zip op-kernel-dev-f8dbab29f4d4b977a56776af0d5296b0e6386aef.tar.gz | |
[media] tm6000: Don't try to use a non-existing interface
> [34883.426065] tm6000 #0: registered device video0
> [34883.430591] Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: 0)
> [34883.437763] usbcore: registered new interface driver tm6000
> [34884.608372] BUG: unable to handle kernel NULL pointer dereference at 00000002
> [34884.615514] IP: [<f8c4ceea>] tm6000_reset+0xd7/0x11c [tm6000]
The dev->int_in USB interfaces is used by some devices for the
Remote Controller. Not all devices seem to define this interface,
so, tm6000_reset should not try to set the interface to it on
such devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/tm6000/tm6000-core.c')
| -rw-r--r-- | drivers/staging/tm6000/tm6000-core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c index 9cef1d1..b3c4e05 100644 --- a/drivers/staging/tm6000/tm6000-core.c +++ b/drivers/staging/tm6000/tm6000-core.c @@ -621,6 +621,12 @@ int tm6000_reset(struct tm6000_core *dev) msleep(5); + /* + * Not all devices have int_in defined + */ + if (!dev->int_in.endp) + return 0; + err = usb_set_interface(dev->udev, dev->isoc_in.bInterfaceNumber, 2); if (err < 0) { tm6000_err("failed to select interface %d, alt. setting 2\n", |
