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Johan Hovold authored
The 8250 handle_irq callback is not just called from the interrupt handler but also from a timer callback when polling (e.g. for ports without an interrupt line). Consequently the callback must explicitly disable interrupts to avoid a potential deadlock with another interrupt in polled mode. Fix up the two paths in the freescale callback that failed to re-enable interrupts when polling. Fixes: 853a9ae2 ("serial: 8250: fix handle_irq locking") Cc: stable@vger.kernel.org # 5.13 Reported-by:
Dan Carpenter <error27@gmail.com> Link: https://lore.kernel.org/r/Y/xYzqp4ogmOF5t0@kiliSigned-off-by:
Johan Hovold <johan@kernel.org> Acked-by:
Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20230227085046.24282-1-johan@kernel.orgSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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