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>
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 @@
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)