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[media] fintek-cir: make suspend with active IR more reliable

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There was a missing lock in fintek_suspend. Without the lock, its
possible the system will be in the middle of receiving IR (draining the
RX buffer) when we try to disable CIR interrupts.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson 2011-05-27 17:14:51 -03:00 committed by Mauro Carvalho Chehab
parent 8de111e276
commit 0ae90252d0
1 changed files with 5 additions and 0 deletions
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5
drivers/media/rc/fintek-cir.c
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@ -597,12 +597,17 @@ static void __devexit fintek_remove(struct pnp_dev *pdev)
static int fintek_suspend(struct pnp_dev *pdev, pm_message_t state)
{
struct fintek_dev *fintek = pnp_get_drvdata(pdev);
unsigned long flags;
fit_dbg("%s called", __func__);
spin_lock_irqsave(&fintek->fintek_lock, flags);
/* disable all CIR interrupts */
fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
spin_unlock_irqrestore(&fintek->fintek_lock, flags);
fintek_config_mode_enable(fintek);
/* disable cir logical dev */