* Possible bug in 8250.c
@ 2011-08-11 23:23 Ivica Mikec
2011-08-11 23:23 ` Ivica Mikec
0 siblings, 1 reply; 2+ messages in thread
From: Ivica Mikec @ 2011-08-11 23:23 UTC (permalink / raw)
To: linux-mips
Hi!
I noticed a problem in 8250.c.
My board has only one UART port, and is 16550 compatible, so in function serial8250_interrupt I see that serial_in function is called twice. Second time, code "else if (end == NULL)" is executed and function return IRQ_NONE. This causes an entry in /proc/irq/spurious:
count 239
unhandled 1
last_unhandled 4294700846 ms
But this is not a spurious interrupt.
Regards.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Possible bug in 8250.c
2011-08-11 23:23 Possible bug in 8250.c Ivica Mikec
@ 2011-08-11 23:23 ` Ivica Mikec
0 siblings, 0 replies; 2+ messages in thread
From: Ivica Mikec @ 2011-08-11 23:23 UTC (permalink / raw)
To: linux-mips
Hi!
I noticed a problem in 8250.c.
My board has only one UART port, and is 16550 compatible, so in function serial8250_interrupt I see that serial_in function is called twice. Second time, code "else if (end == NULL)" is executed and function return IRQ_NONE. This causes an entry in /proc/irq/spurious:
count 239
unhandled 1
last_unhandled 4294700846 ms
But this is not a spurious interrupt.
Regards.
^ permalink raw reply [flat|nested] 2+ messages in thread
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