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036778a4fa
TSCONFIG_GET and TSCONFIG_SET reject a device that implements neither
hwtstamp NDO, even when its PHY can serve the request. The ioctls they
meant to replace handle it, so the two interfaces disagree on the same
hardware and user space has to pick one.
Accept the default timestamping PHY and an already installed provider on
both sides. On the set side the test moves into ethnl_set_tsconfig() as
the validate callback runs without rtnl. On the get side it stays ahead
of ethnl_ops_begin(), so a device that can serve nothing keeps failing
with EOPNOTSUPP and a dump still skips it rather than stopping there.
A netdev provider needs ndo_hwtstamp_set to be programmed at all, so
don't pick that source without it, and test for ndo_hwtstamp_get before
calling it.
Fixes:
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| README | ||
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. 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