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author | Petr Oros <poros@redhat.com> | 2024-07-02 20:14:57 +0300 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2024-07-04 05:36:52 +0300 |
commit | 7829ee78490ddb29993cc7893384a04b8cc7436c (patch) | |
tree | 82bf70f14123b418c2aa4be79539582be7e044fb /drivers/net/ethernet/neterion | |
parent | be2a9d12e6dad894b27361c06ea3752d67a45b49 (diff) | |
download | linux-7829ee78490ddb29993cc7893384a04b8cc7436c.tar.xz |
ice: use proper macro for testing bit
Do not use _test_bit() macro for testing bit. The proper macro for this
is one without underline.
_test_bit() is what test_bit() was prior to const-optimization. It
directly calls arch_test_bit(), i.e. the arch-specific implementation
(or the generic one). It's strictly _internal_ and shouldn't be used
anywhere outside the actual test_bit() macro.
test_bit() is a wrapper which checks whether the bitmap and the bit
number are compile-time constants and if so, it calls the optimized
function which evaluates this call to a compile-time constant as well.
If either of them is not a compile-time constant, it just calls _test_bit().
test_bit() is the actual function to use anywhere in the kernel.
IOW, calling _test_bit() avoids potential compile-time optimizations.
The sensors is not a compile-time constant, thus most probably there
are no object code changes before and after the patch.
But anyway, we shouldn't call internal wrappers instead of
the actual API.
Fixes: 4da71a77fc3b ("ice: read internal temperature sensor")
Acked-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Petr Oros <poros@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20240702171459.2606611-5-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/neterion')
0 files changed, 0 insertions, 0 deletions