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>

1 files changed, 13 insertions, 1 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 42f39781af8..64624b9b645 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -932,7 +932,19 @@ struct ide_driver_s {
 int ide_device_get(ide_drive_t *);
 void ide_device_put(ide_drive_t *);
 
-int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
+struct ide_ioctl_devset {
+        unsigned int    get_ioctl;
+        unsigned int    set_ioctl;
+
+        int             (*get)(ide_drive_t *);
+        int             (*set)(ide_drive_t *, int);
+};
+
+int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
+                      unsigned long, const struct ide_ioctl_devset *);
+
+int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
+                      unsigned, unsigned long);
 
 extern int ide_vlb_clk;
 extern int ide_pci_clk;