diff options
| author | Luis Henriques <luis.henriques@canonical.com> | 2012-04-21 19:25:21 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-04-26 22:41:16 +0400 |
| commit | 9ef449c6b31bb6a8e6dedc24de475a3b8c79be20 (patch) | |
| tree | 03b61f0a0288416b83063099c15be28eead02ebe /drivers/media/rc/fintek-cir.c | |
| parent | 9967232f1be5bab10c7b7a8dcf51ff5c3c1a6d77 (diff) | |
| download | linux-9ef449c6b31bb6a8e6dedc24de475a3b8c79be20.tar.xz | |
[media] rc: Postpone ISR registration
An early registration of an ISR was causing a crash to several users (for
example, with the ite-cir driver: http://bugs.launchpad.net/bugs/972723).
The reason was that IRQs were being triggered before a driver
initialisation was completed.
This patch fixes this by moving the invocation to request_irq() and to
request_region() to a later stage on the driver probe function.
Cc: <stable@vger.kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/rc/fintek-cir.c')
| -rw-r--r-- | drivers/media/rc/fintek-cir.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/media/rc/fintek-cir.c b/drivers/media/rc/fintek-cir.c index 392d4be91f8f..238d4033a826 100644 --- a/drivers/media/rc/fintek-cir.c +++ b/drivers/media/rc/fintek-cir.c @@ -514,16 +514,6 @@ static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id spin_lock_init(&fintek->fintek_lock); - ret = -EBUSY; - /* now claim resources */ - if (!request_region(fintek->cir_addr, - fintek->cir_port_len, FINTEK_DRIVER_NAME)) - goto failure; - - if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED, - FINTEK_DRIVER_NAME, (void *)fintek)) - goto failure; - pnp_set_drvdata(pdev, fintek); fintek->pdev = pdev; @@ -558,6 +548,16 @@ static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id /* rx resolution is hardwired to 50us atm, 1, 25, 100 also possible */ rdev->rx_resolution = US_TO_NS(CIR_SAMPLE_PERIOD); + ret = -EBUSY; + /* now claim resources */ + if (!request_region(fintek->cir_addr, + fintek->cir_port_len, FINTEK_DRIVER_NAME)) + goto failure; + + if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED, + FINTEK_DRIVER_NAME, (void *)fintek)) + goto failure; + ret = rc_register_device(rdev); if (ret) goto failure; |