[ +cc Huang Shijie ] On 03/20/2014 01:29 PM, Felipe Balbi wrote:
then we need updates to Documentation: Documentation/serial/tty.txt:: | Driver Side Interfaces: | | receive_buf() - Hand buffers of bytes from the driver to the ldisc | for processing. Semantics currently rather | mysterious 8( | | write_wakeup() - May be called at any point between open and close. | The TTY_DO_WRITE_WAKEUP flag indicates if a call | is needed but always races versus calls. Thus the | ldisc must be careful about setting order and to | handle unexpected calls. Must not sleep. | | The driver is forbidden from calling this directly | from the ->write call from the ldisc as the ldisc | is permitted to call the driver write method from | this function. In such a situation defer it. documentation says ldisc is allowed to call ->write() from ->write_wakeup(). huh ?
Patch submitted but never applied. http://www.spinics.net/lists/linux-serial/msg11144.html Regards, Peter Hurley -- 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
