On Tue, 2012-08-28 at 12:44 +0100, Luis Henriques wrote: > On Mon, Aug 20, 2012 at 12:32:27AM +0100, Ben Hutchings wrote: > > ite_dev::rdev is currently initialised in ite_probe() after > > rc_register_device() returns. If a newly registered device is opened > > quickly enough, we may enable interrupts and try to use ite_dev::rdev > > before it has been initialised. Move it up to the earliest point we > > can, right after calling rc_allocate_device(). > > I believe this is the same bug: > > https://bugzilla.kernel.org/show_bug.cgi?id=46391 > > And the bug is present in other IR devices as well. > > I've sent a proposed fix: > > http://marc.info/?l=linux-kernel&m=134590803109050&w=2 It might be a worthwhile fix. But it doesn't fix this bug - after that patch, the driver will still enable its IRQ before initialising ite_dev::rdev. Ben. > Cheers, > -- > Luis > > > > > References: http://bugs.debian.org/684441 Reported-and-tested-by: > > YunQiang Su <wzssyqa@gmail.com> Signed-off-by: Ben Hutchings > > <ben@decadent.org.uk> Cc: stable@vger.kernel.org --- Unlike the > > previous version, this will apply cleanly to the media > > staging/for_v3.6 branch. > > > > Ben. > > > > drivers/media/rc/ite-cir.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c > > index 36fe5a3..24c77a4 100644 > > --- a/drivers/media/rc/ite-cir.c > > +++ b/drivers/media/rc/ite-cir.c > > @@ -1473,6 +1473,7 @@ static int ite_probe(struct pnp_dev *pdev, const struct pnp_device_id > > rdev = rc_allocate_device(); > > if (!rdev) > > goto failure; > > + itdev->rdev = rdev; > > > > ret = -ENODEV; > > > > @@ -1604,7 +1605,6 @@ static int ite_probe(struct pnp_dev *pdev, const struct pnp_device_id > > if (ret) > > goto failure3; > > > > - itdev->rdev = rdev; > > ite_pr(KERN_NOTICE, "driver has been successfully loaded\n"); > > > > return 0; > > > -- Ben Hutchings It is a miracle that curiosity survives formal education. - Albert Einstein
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