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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-20 10:11:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-20 10:11:11 -0700 |
| commit | e6423407d01168f7760cdee7270d9f51d1240301 (patch) | |
| tree | 979795cfa8f6946238ab31f544159142f3e7df93 /drivers/ide/ide-xfer-mode.c | |
| parent | 7f8189068726492950bf1a2dcfd9b51314560abf (diff) | |
| parent | 39c58f37a10198054c656c28202fb1e6d22fd505 (diff) | |
Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (34 commits)
ide-cd: prevent null pointer deref via cdrom_newpc_intr
ide: BUG() on unknown requests
ide: filter out invalid DMA xfer mode changes in HDIO_DRIVE_CMD ioctl handler
ide: do not access ide_drive_t 'drive_data' field directly
sl82c105: implement test_irq() method
siimage: implement test_irq() method
pdc202xx_old: implement test_irq() method (take 2)
cmd64x: implement test_irq() method
cmd640: implement test_irq() method
ide: move ack_intr() method into 'struct ide_port_ops' (take 2)
ide: move IRQ clearing from ack_intr() method to clear_irq() method (take 2)
siimage: use ide_dma_test_irq() (take 2)
cmd64x: implement clear_irq() method (take 2)
ide: call clear_irq() method in ide_timer_expiry()
sgiioc4: coding style cleanup
ide: don't enable IORDY at a probe time
ide: IORDY handling fixes
ata: add ata_id_pio_need_iordy() helper (v2)
ide-tape: fix build issue
ide: unify interrupt reason checking
...
Diffstat (limited to 'drivers/ide/ide-xfer-mode.c')
| -rw-r--r-- | drivers/ide/ide-xfer-mode.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/ide/ide-xfer-mode.c b/drivers/ide/ide-xfer-mode.c index af44be9d546c..46d203ce60cc 100644 --- a/drivers/ide/ide-xfer-mode.c +++ b/drivers/ide/ide-xfer-mode.c @@ -107,6 +107,18 @@ u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode) } EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); +int ide_pio_need_iordy(ide_drive_t *drive, const u8 pio) +{ + /* + * IORDY may lead to controller lock up on certain controllers + * if the port is not occupied. + */ + if (pio == 0 && (drive->hwif->port_flags & IDE_PFLAG_PROBING)) + return 0; + return ata_id_pio_need_iordy(drive->id, pio); +} +EXPORT_SYMBOL_GPL(ide_pio_need_iordy); + int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) { ide_hwif_t *hwif = drive->hwif; |