Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Regarding to:
https://github.com/tanzilli/ariag25-linux-2.6.39/blob/ariag25/drivers/tty/serial/8250.c#L1584
https://github.com/tanzilli/ariag25-linux-2.6.39/blob/ariag25/drivers/tty/serial/8250.c#L1913



When UART_LSR_THRE bit is set, then we ready to transmit more.

Current u16550_putc loops while UART_LSR_THRE bit is set. This logic have to be inverted.

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

[drivers/net/ftmac100] Remove private board-specific interrupt configuration calls. Configure Mode/Level outside of the driver scope.

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>

16550 UART Driver: Add a configuration option to indicate the the THR empty bit is inverted.  This is the the case for the moxART SoC.  Based comments from Anton D. Kachalov

Sporadic: This interim version works pretty well, but the things that I had to do were nasty and mean that -- sigh -- there will be another redesign coming

Check if DNS server has been initialized before trying to lookup the server address in the cache.  From Librae

Sporadic scheduler: Add logic to collection the partial timer expiration when a sporadic thread is suspended in tickless mode

Sporadic scheduler: Handle a case when the scheduler is resumed before it has even had a chance to run

This is basically a complete redesign of the sporadic scheduling logic due to limitations in the initial design