spi/spi-xilinx: Fix spurious IRQ ACK on irq mode

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commit 74346841e6 upstream.

The ACK of an inexistent IRQ can trigger an spurious IRQ that breaks the
txrx logic. This has been observed on axi_quad_spi:3.2 core.

This patch only ACKs IRQs that have not been Acknowledge jet.

Reported-by: Edward Kigwana <ekigwana@scires.com>
Tested-by: Edward Kigwana <ekigwana@scires.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ricardo Ribalda Delgado 2015-08-13 16:09:28 +02:00 • committed by Greg Kroah-Hartman

parent 7d72c3751d

commit 7d3cb0eecd

1 changed files with 10 additions and 6 deletions

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drivers/spi/spi-xilinx.c

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