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linux/drivers/mcb/mcb-pci.c
Sanjuán García, Jorge a774c5d1f9 mcb: mcb-pci: detect IO mapped devices before requesting resources 
If the memory region is requested with devm_request_mem_region()
for an IO mapped device it will return an error and mcb-pci will
incorrectly report it with EBUSY code.

Make sure we identify if the reosure is IO mapped and fail early
with a correct ENOTSUPP code.

Reviewed-by: Jose Javier Rodriguez Barbarin <JoseJavier.Rodriguez@duagon.com>
Signed-off-by: Jorge Sanjuan Garcia <jorge.sanjuangarcia@duagon.com>
Link: https://lore.kernel.org/r/20240523103430.423340-1-jorge.sanjuangarcia@duagon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-04 17:48:57 +02:00

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