Guenter,
On Thu, 25 Feb 2016 23:41:50 -0800, Guenter Roeck wrote:
also caused by b4f596b19624 (arm64: add mvebu architecture entry) which enables MVBEU on arm64, the commit was present for a little while and the error cropped up but didn't get reported due to other things masking it. atomic_io_modify() is only available on ARM, I'm unsure if this needs a driver change or if the driver is just specific to older hardware anyway. The code is only used in the init path accessing what look to be device specific registers so I'm not 100% clear why it specifically needs to be an atomic modify.
Thierry already submitted a patch yesterday to restrict the driver to only build on ARM. We can revisit if/when the driver is needed on ARM64.
Ah, good, thanks. It isn't clear yet whether the driver will be needed on ARM64 for the Marvell platforms. For Armada 7K/8K, there is a SBSA compliant watchdog. For Armada 3700, I have only briefly looked, but it seems to be a different IP than the one used on the 32 bits SoCs.
Thanks Thierry for fixing the issue!
Thomas