On Wed, 30 Sep 2015 23:57:57 +0300, Vladimir Zapolskiy wrote: > Hardcode IC irq type to IRQF_TRIGGER_FALLING for both platform and OF > cases. According to the datasheet IC irq line is active low, reflect > this fact in the driver. > > If sc16is7xx device is described in devicetree, the change fixes > the following problem and makes the driver working correctly: > > root@devkit3250:~# stty -F /dev/ttySC1 115200 > INFO: rcu_preempt self-detected stall on CPU > 0: (2100 ticks this GP) idle=a79/140000000000002/0 softirq=1759/1759 fqs=0 > (t=2100 jiffies g=910 c=909 q=2) > rcu_preempt kthread starved for 2100 jiffies! g910 c909 f0x0 s3 ->state=0x1 > Task dump for CPU 0: > stty R running 0 698 696 0x00000002 > ...... > > Signed-off-by: Vladimir Zapolskiy <vz@xxxxxxxxx> NAK I'm with Alexander on this one. Did you honestly configure the device in a wrong way by mistake or is it a hypothetical problem? Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
