diff options
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; |