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| author | Will Deacon <[email protected]> | 2019-02-22 13:37:21 +0000 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2019-04-08 11:00:32 +0000 |
| commit | 49ca6462fc9e0f5a67cd96eeddd844efc3fb33b9 (patch) | |
| tree | e4e9054283eee93d05a3b371fc2fa7db4fa15d97 /drivers/net/ethernet/intel/igc/igc_main.c | |
| parent | mips/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() (diff) | |
| download | kernel-49ca6462fc9e0f5a67cd96eeddd844efc3fb33b9.tar.gz kernel-49ca6462fc9e0f5a67cd96eeddd844efc3fb33b9.zip | |
ia64/mmiowb: Add unconditional mmiowb() to arch_spin_unlock()
The mmiowb() macro is horribly difficult to use and drivers will continue
to work most of the time if they omit a call when it is required.
Rather than rely on driver authors getting this right, push mmiowb() into
arch_spin_unlock() for ia64. If this is deemed to be a performance issue,
a subsequent optimisation could make use of ARCH_HAS_MMIOWB to elide
the barrier in cases where no I/O writes were performed inside the
critical section.
Acked-by: Linus Torvalds <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_main.c')
0 files changed, 0 insertions, 0 deletions