[Skiboot] [PATCH] lpc: Clear pending IRQs at boot

Stewart Smith stewart at linux.vnet.ibm.com
Wed Nov 29 16:45:41 AEDT 2017

Oliver O'Halloran <oohall at gmail.com> writes:
> When we come in from hostboot the LPC master has the bus reset indicator
> set. This error isn't handled until the host kernel unmasks interrupts,
> at which point we get the following suprious error:
> [   20.053560375,3] LPC: Got LPC reset on chip 0x0 !
> [   20.053564560,3] LPC[000]: Unknown LPC error Error address reg: 0x00000000
> Fix this by clearing the various error bits in the LPC status register
> before we initalise the skiboot LPC bus driver.
> Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
> ---
>  hw/lpc.c | 4 ++++
>  1 file changed, 4 insertions(+)

That's been casually bugging me in test results for ages, thanks.

Merged to master as of 7fb517898f69ea008077297617e1035827e29417.

Stewart Smith
OPAL Architect, IBM.

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