[kernel] powerpc/pci: Fix broken INTx configuration via OF

[Michael Ellerman]

On Thu, 2018-02-08 at 05:33:54 UTC, Alexey Kardashevskiy wrote:
> Commit 59f47eff03a0 ("powerpc/pci: Use of_irq_parse_and_map_pci() helper")
> correctly states that of_irq_parse_and_map_pci() does the same thing as
> of_irq_parse_pci() does as it simply calls
> of_irq_parse_pci() and irq_create_of_mapping().
> 
> However of_irq_parse_and_map_pci() not only returns 0 for success and
> negative value for an error but also a positive virq value from
> irq_create_of_mapping() which the mentioned commit ignores and
> INTx config fails.
> 
> This fixes the of_irq_parse_and_map_pci() return value handling.
> 
> Fixes: 59f47eff03a0 "powerpc/pci: Use of_irq_parse_and_map_pci() helper"
> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/560c0f978155282e36f33d21b2aeae

cheers