On 09/01/2014 08:08, Mark Roszko :
> Just to sumarize the bug after poking before the patch:
>systemd calls open/close on /dev/ttyS0 per line
>atmel_shutdown executes on close
>uart_timer_callback may fire during shutdown before timer is killed
>tasklet gets scheduled after
On 09/01/2014 08:08, Mark Roszko :
Just to sumarize the bug after poking before the patch:
systemd calls open/close on /dev/ttyS0 per line
atmel_shutdown executes on close
uart_timer_callback may fire during shutdown before timer is killed
tasklet gets scheduled after tasklet_kill
Just to sumarize the bug after poking before the patch:
systemd calls open/close on /dev/ttyS0 per line
atmel_shutdown executes on close
uart_timer_callback may fire during shutdown before timer is killed
tasklet gets scheduled after tasklet_kill
atmel_shutdown returns back to
**Sorry for the duplicate mail, I forgot to force plain-text mode in
gmail or the mailing list rejects the mails. Sigh, I need to buy my
own email server at this rate to even deal with the mailing lists and
proper etiquette (no quoteS) :(
Ah, I forgot there was that third mode(no dma and no pdc).
From: Marek Roszko
The uart timer will schedule a tasklet when it fires. It is possible that it
can fire inside _shutdown before it is killed in the dma and pdc cleanup
routines. This causes a tasklet that exists after the port is shutdown, so when
the kernel finally executes it, it panics as
From: Marek Roszko mark.ros...@gmail.com
The uart timer will schedule a tasklet when it fires. It is possible that it
can fire inside _shutdown before it is killed in the dma and pdc cleanup
routines. This causes a tasklet that exists after the port is shutdown, so when
the kernel finally
**Sorry for the duplicate mail, I forgot to force plain-text mode in
gmail or the mailing list rejects the mails. Sigh, I need to buy my
own email server at this rate to even deal with the mailing lists and
proper etiquette (no quoteS) :(
Ah, I forgot there was that third mode(no dma and no pdc).
Just to sumarize the bug after poking before the patch:
systemd calls open/close on /dev/ttyS0 per line
atmel_shutdown executes on close
uart_timer_callback may fire during shutdown before timer is killed
tasklet gets scheduled after tasklet_kill
atmel_shutdown returns back to
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