Hello, experts. I am porting my board support for the latest kernel. The 16550 UART device on my board (ARM architecture) shares an IRQ line with an ethernet device. With both devices enabled, I got an error message like this: genirq: Flags mismatch irq 18. 00000080 (serial) vs. 00000084 (eth0) I am working on Linux 4.0 with device tree configuration. Is there any solution? When I used an old kernel with a board file, I could use CONFIG_SERIAL_8250_SHARE_IRQ. I gave it a try on the latest kernel, but it looked like no effect for me. As I use device tree configuration, the UART is initialized via drivers/tty/serial/of_serial.c If CONFIG_SERIAL_8250_SHARE_IRQ is on, IRQF_SHARED is set in serial8250_probe(), but this function is only for pre-device-tree old boards, I think. Is CONFIG_SERIAL_8250_SHARE_IRQ no longer supported for DTS-configured boards? Any hint is appreciated. -- Best Regards Masahiro Yamada -- 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
