[media] media: rc: nuvoton: replace usage of spin_lock_irqsave in ISR

Kernel takes care that interrupts from one source are serialized.
So there's no need to use spinlock_irq_save.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Heiner Kallweit 2016-10-25 17:23:52 -02:00 committed by Mauro Carvalho Chehab
parent 73d4576d8f
commit c044170fcf
1 changed files with 4 additions and 5 deletions

View File

@ -840,11 +840,10 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
{
struct nvt_dev *nvt = data;
u8 status, iren;
unsigned long flags;
nvt_dbg_verbose("%s firing", __func__);
spin_lock_irqsave(&nvt->lock, flags);
spin_lock(&nvt->lock);
/*
* Get IR Status register contents. Write 1 to ack/clear
@ -866,7 +865,7 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
* logical device is being disabled.
*/
if (status == 0xff && iren == 0xff) {
spin_unlock_irqrestore(&nvt->lock, flags);
spin_unlock(&nvt->lock);
nvt_dbg_verbose("Spurious interrupt detected");
return IRQ_HANDLED;
}
@ -875,7 +874,7 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
* status bit whether the related interrupt source is enabled
*/
if (!(status & iren)) {
spin_unlock_irqrestore(&nvt->lock, flags);
spin_unlock(&nvt->lock);
nvt_dbg_verbose("%s exiting, IRSTS 0x0", __func__);
return IRQ_NONE;
}
@ -923,7 +922,7 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
}
}
spin_unlock_irqrestore(&nvt->lock, flags);
spin_unlock(&nvt->lock);
nvt_dbg_verbose("%s done", __func__);
return IRQ_HANDLED;