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Commit f8c627fb authored by Sean Young's avatar Sean Young Committed by Mauro Carvalho Chehab
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[media] sir_ir: infinite loop in interrupt handler 



Since this driver does no detection of hardware, it might be used with
a non-sir port. Escape out if we are spinning.

Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent ae8eb443

drivers/media/rc/sir_ir.c

+6 −0
Original line number Diff line number Diff line
@@ -183,9 +183,15 @@ static irqreturn_t sir_interrupt(int irq, void *dev_id) 
	static unsigned long delt;

	unsigned long deltintr;

	unsigned long flags;

	int counter = 0;

	int iir, lsr;



	while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) {

		if (++counter > 256) {

			dev_err(&sir_ir_dev->dev, "Trapped in interrupt");

			break;

		}



		switch (iir & UART_IIR_ID) { /* FIXME toto treba preriedit */

		case UART_IIR_MSI:

			(void)inb(io + UART_MSR);