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| author | Mark Lord <liml@rtr.ca> | 2008-05-17 13:38:00 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-19 17:30:11 -0400 |
| commit | 96e2c487933e5f69e98fffdcae2c35c78a671c07 (patch) | |
| tree | 418ff66ed6e6aaaef8775e1b6d03d6c799fc6b4c /drivers/ata/pata_cypress.c | |
| parent | a44253d24a97ec3efe601267274a5fb64d8696c1 (diff) | |
| download | kernel_samsung_smdk4412-96e2c487933e5f69e98fffdcae2c35c78a671c07.zip kernel_samsung_smdk4412-96e2c487933e5f69e98fffdcae2c35c78a671c07.tar.gz kernel_samsung_smdk4412-96e2c487933e5f69e98fffdcae2c35c78a671c07.tar.bz2 | |
sata_mv: cache main_irq_mask register in hpriv
Part five of simplifying/fixing handling of the main_irq_mask register
to resolve unexpected interrupt issues observed in 2.6.26-rc*.
Keep a cached copy of the main_irq_mask so that we don't have
to stall the CPU to read it on every pass through mv_interrupt.
This significantly speeds up interrupt handling, both for sata_mv,
and for any other driver/device sharing the same PCI IRQ line.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/pata_cypress.c')
0 files changed, 0 insertions, 0 deletions