drivers/ide/ide-disk_ioctl.c

   1 #include <linux/kernel.h>
   2 #include <linux/ide.h>
   3 #include <linux/hdreg.h>
   4 #include <linux/mutex.h>
   5
   6 #include "ide-disk.h"
   7
   8 static DEFINE_MUTEX(ide_disk_ioctl_mutex);
   9 static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = {
  10 { HDIO_GET_ADDRESS,     HDIO_SET_ADDRESS,   &ide_devset_address   },
  11 { HDIO_GET_MULTCOUNT,   HDIO_SET_MULTCOUNT, &ide_devset_multcount },
  12 { HDIO_GET_NOWERR,      HDIO_SET_NOWERR,    &ide_devset_nowerr    },
  13 { HDIO_GET_WCACHE,      HDIO_SET_WCACHE,    &ide_devset_wcache    },
  14 { HDIO_GET_ACOUSTIC,    HDIO_SET_ACOUSTIC,  &ide_devset_acoustic  },
  15 { 0 }
  16 };
  17
  18 int ide_disk_ioctl(ide_drive_t *drive, struct block_device *bdev, fmode_t mode,
  19                    unsigned int cmd, unsigned long arg)
  20 {
  21         int err;
  22
  23         mutex_lock(&ide_disk_ioctl_mutex);
  24         err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_disk_ioctl_settings);
  25         if (err != -EOPNOTSUPP)
  26                 goto out;
  27
  28         err = generic_ide_ioctl(drive, bdev, cmd, arg);
  29 out:
  30         mutex_unlock(&ide_disk_ioctl_mutex);
  31         return err;
  32 }