Commit d3364847 authored Jul 15, 2016 by Lars-Peter Clausen Committed by Mark Brown Jul 15, 2016

spi: xilinx: Return IRQ_NONE if no interrupts were detected



Return IRQ_NONE from the interrupt handler if the handler is running, but
no interrupt was detected. This allows the system to recover in case of an
interrupt storm due to an invalid interrupt configuration or faulty
hardware.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 4db9bf54

drivers/spi/spi-xilinx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -341,9 +341,10 @@ static irqreturn_t xilinx_spi_irq(int irq, void *dev_id)

		if (ipif_isr & XSPI_INTR_TX_EMPTY) { /* Transmission completed */
		complete(&xspi->done);
		return IRQ_HANDLED;
		}

		return IRQ_HANDLED;
		return IRQ_NONE;
		}

		static int xilinx_spi_find_buffer_size(struct xilinx_spi *xspi)