Messages in this thread | | | Date | Tue, 01 Sep 2015 10:41:50 +0300 | From | Jarkko Nikula <> | Subject | Re: [PATCH] spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled |
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On 09/01/2015 05:22 AM, Tan Jui Nee wrote: > From: "Tan, Jui Nee" <jui.nee.tan@intel.com> > > 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@intel.com> > --- > drivers/spi/spi-pxa2xx.c | 4 ++++ > 1 file changed, 4 insertions(+) > Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
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