From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars-Peter Clausen Subject: [PATCH v2 2/2] spi: xilinx: Return IRQ_NONE if no interrupts were detected Date: Fri, 15 Jul 2016 11:04:19 +0200 Message-ID: <1468573459-3071-2-git-send-email-lars@metafoo.de> References: <1468573459-3071-1-git-send-email-lars@metafoo.de> Cc: Michal Simek , =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , Ricardo Ribalda Delgado , linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Lars-Peter Clausen To: Mark Brown Return-path: In-Reply-To: <1468573459-3071-1-git-send-email-lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: 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 --- No changes since v1 --- 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 e62eb9a..bc7100b 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) -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html