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Revert THRNE-patch. The problem was in u16550_putc

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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>
This commit is contained in:
Anton D. Kachalov
2015-08-03 12:42:39 +03:00
parent 2ca1dd6efe
commit 2fa6237b49
3 changed files with 3 additions and 22 deletions
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include/nuttx/serial/uart_16550.h
+1 -5
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@@ -299,11 +299,7 @@
#define UART_LSR_PE (1 << 2) /* Bit 2: Parity Error */
#define UART_LSR_FE (1 << 3) /* Bit 3: Framing Error */
#define UART_LSR_BI (1 << 4) /* Bit 4: Break Interrupt */
#ifdef CONFIG_16550_THRNE
# define UART_LSR_THRNE (1 << 5) /* Bit 5: Transmitter Holding Register Not Empty */
#else
# define UART_LSR_THRE (1 << 5) /* Bit 5: Transmitter Holding Register Empty */
#endif
#define UART_LSR_THRE (1 << 5) /* Bit 5: Transmitter Holding Register Empty */
#define UART_LSR_TEMT (1 << 6) /* Bit 6: Transmitter Empty */
#define UART_LSR_RXFE (1 << 7) /* Bit 7: Error in RX FIFO (RXFE) */