Hi Peter,
On 19 August 2013 21:01, Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> wrote:
> Please review commit 677fe555cbfb188af58cce105f4dae9505e58c31
> 'serial: imx: Fix recursive locking bug' to see if that is actually the
> problem
> you're having with the samsung serial driver.
No, this doesn't seem to be the same issue... The issue here is:
s3c24xx_serial_rx_chars()
-> spin_lock_irqsave(&port->lock, flags);
-> tty_flip_buffer_push()
-> flush_to_ldisc()
-> n_tty_receive_buf2()
-> __receive_buf()
-> uart_start()
-> spin_lock_irqsave(&port->lock, flags);
This seems to be a generic enough problem as many drivers are already
doing the right thing. They release lock before calling
tty_flip_buffer_push()..
And that's why my patchset had only 25 patches :)
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