On 09/01/2015 05:22 AM, Tan Jui Nee wrote:
From: "Tan, Jui Nee" <[email protected]>
On Intel Baytrail, there is case when interrupt handler get called, no SPI
message is captured. The RX FIFO is indeed empty when RX timeout pending
interrupt (SSSR_TINT) happens.
Use the BIOS version where both HSUART and SPI are on the same IRQ. Both
drivers are using IRQF_SHARED when calling the request_irq function. When
running two separate and independent SPI and HSUART application that
generate data traffic on both components, user will see messages like
below on the console:
pxa2xx-spi pxa2xx-spi.0: bad message state in interrupt handler
This commit will fix this by first checking Receiver Time-out Interrupt,
if it is disabled, ignore the request and return without servicing.
Signed-off-by: Tan, Jui Nee <[email protected]>
---
drivers/spi/spi-pxa2xx.c | 4 ++++
1 file changed, 4 insertions(+)
Acked-by: Jarkko Nikula <[email protected]>
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