Hi all,
In a normal situation, I have something like this:
serial8250_interrupt()
serial8250_handle_port()
transmit_chars()
pass_counter: 0
serial8250_handle_port()
pass_counter: 1
serial8250_handle_port()
pass_counter: 2
pass_counter: 3
But when the problem happends:
serial8250_interrupt(16)
serial8250_handle_port()
transmit_chars()
uart_circ_empty()
pass_counter: 0
.
.
.
serial8250_handle_port()
transmit_chars()
uart_circ_empty()
pass_counter: 257
serial8250: too much work for irq16
If the circ buffer is empty, why iterate 256 times?
How can I trace the application that is calling serial routines?
Its difficult to debug cause I use serial console to communicate with the board.
Thanks in advance,
--
Alemao