From d33648478501407267557b1bf6897169625f4178 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 15 Jul 2016 11:04:19 +0200 Subject: [PATCH] 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 Acked-by: Ricardo Ribalda Delgado Signed-off-by: Mark Brown --- drivers/spi/spi-xilinx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index e62eb9ace825..bc7100b93dfc 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -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) -- 2.20.1