On 09/01/2015 05:22 AM, Tan Jui Nee wrote:
From: "Tan, Jui Nee" <jui.nee.tan@xxxxxxxxx> 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 <jui.nee.tan@xxxxxxxxx> --- drivers/spi/spi-pxa2xx.c | 4 ++++ 1 file changed, 4 insertions(+)
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