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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:33 +0200 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:33 +0200 |
commit | aa7687738af3332470e02ac1060f6c046d83c9a3 (patch) | |
tree | 2eb2cd89de0b8dcad12534e28a9178d0325ae491 /drivers/ide/ide.c | |
parent | 9232c14bff36d65de254f34386c00b732c5b6099 (diff) | |
download | linux-3.10-aa7687738af3332470e02ac1060f6c046d83c9a3.tar.gz linux-3.10-aa7687738af3332470e02ac1060f6c046d83c9a3.tar.bz2 linux-3.10-aa7687738af3332470e02ac1060f6c046d83c9a3.zip |
ide: add ide_setting_ioctl() helper
* Add struct ide_ioctl_devset representing ioctl device setting.
* Add ide_setting_ioctl() helper for matching given ioctl
and its parameters against table of ioctl device settings.
* Convert ide_setting_ioctl() and idedisk_ioctl() to use
ide_setting_ioctl().
* Un-export ide_setting_mtx.
While at it:
* {get,set}_lba_addressing() -> {get,set}_addressing()
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide.c')
-rw-r--r-- | drivers/ide/ide.c | 53 |
1 files changed, 34 insertions, 19 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index f78e789ea5f..4910924abeb 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -250,8 +250,6 @@ void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) DEFINE_MUTEX(ide_setting_mtx); -EXPORT_SYMBOL_GPL(ide_setting_mtx); - /** * ide_spin_wait_hwgroup - wait for group * @drive: drive in the group @@ -558,23 +556,23 @@ static int ide_set_nice_ioctl(ide_drive_t *drive, unsigned long arg) return 0; } +static const struct ide_ioctl_devset ide_ioctl_settings[] = { +{ HDIO_GET_32BIT, HDIO_SET_32BIT, get_io_32bit, set_io_32bit }, +{ HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, get_ksettings, set_ksettings }, +{ HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, get_unmaskirq, set_unmaskirq }, +{ HDIO_GET_DMA, HDIO_SET_DMA, get_using_dma, set_using_dma }, +{ -1, HDIO_SET_PIO_MODE, NULL, set_pio_mode }, +{ 0 } +}; + int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, unsigned int cmd, unsigned long arg) { - unsigned long flags; - int err = 0, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int); + int err; - switch (cmd) { - case HDIO_GET_32BIT: getfunc = get_io_32bit; goto read_val; - case HDIO_GET_KEEPSETTINGS: getfunc = get_ksettings; goto read_val; - case HDIO_GET_UNMASKINTR: getfunc = get_unmaskirq; goto read_val; - case HDIO_GET_DMA: getfunc = get_using_dma; goto read_val; - case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; - case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; - case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; - case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; - case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; - } + err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_ioctl_settings); + if (err != -EOPNOTSUPP) + return err; switch (cmd) { case HDIO_OBSOLETE_IDENTITY: @@ -629,11 +627,29 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device default: return -EINVAL; } +} +EXPORT_SYMBOL(generic_ide_ioctl); + +int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev, + unsigned int cmd, unsigned long arg, + const struct ide_ioctl_devset *s) +{ + unsigned long flags; + int err = -EOPNOTSUPP; + + for (; s->get_ioctl; s++) { + if (s->get && s->get_ioctl == cmd) + goto read_val; + else if (s->set && s->set_ioctl == cmd) + goto set_val; + } + + return err; read_val: mutex_lock(&ide_setting_mtx); spin_lock_irqsave(&ide_lock, flags); - err = getfunc(drive); + err = s->get(drive); spin_unlock_irqrestore(&ide_lock, flags); mutex_unlock(&ide_setting_mtx); return err >= 0 ? put_user(err, (long __user *)arg) : err; @@ -646,14 +662,13 @@ set_val: err = -EACCES; else { mutex_lock(&ide_setting_mtx); - err = setfunc(drive, arg); + err = s->set(drive, arg); mutex_unlock(&ide_setting_mtx); } } return err; } - -EXPORT_SYMBOL(generic_ide_ioctl); +EXPORT_SYMBOL_GPL(ide_setting_ioctl); /** * ide_device_get - get an additional reference to a ide_drive_t |