diff options
Diffstat (limited to 'drivers/ide/ide-cd.c')
| -rw-r--r-- | drivers/ide/ide-cd.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 9d117936bee1..dcf8b51b47fd 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -25,6 +25,7 @@ #define IDECD_VERSION "5.00" +#include <linux/compat.h> #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> @@ -1710,6 +1711,41 @@ static int idecd_ioctl(struct block_device *bdev, fmode_t mode, return ret; } +static int idecd_locked_compat_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) +{ + struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info); + void __user *argp = compat_ptr(arg); + int err; + + switch (cmd) { + case CDROMSETSPINDOWN: + return idecd_set_spindown(&info->devinfo, (unsigned long)argp); + case CDROMGETSPINDOWN: + return idecd_get_spindown(&info->devinfo, (unsigned long)argp); + default: + break; + } + + err = generic_ide_ioctl(info->drive, bdev, cmd, arg); + if (err == -EINVAL) + err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, + (unsigned long)argp); + + return err; +} + +static int idecd_compat_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) +{ + int ret; + + mutex_lock(&ide_cd_mutex); + ret = idecd_locked_compat_ioctl(bdev, mode, cmd, arg); + mutex_unlock(&ide_cd_mutex); + + return ret; +} static unsigned int idecd_check_events(struct gendisk *disk, unsigned int clearing) @@ -1732,6 +1768,8 @@ static const struct block_device_operations idecd_ops = { .open = idecd_open, .release = idecd_release, .ioctl = idecd_ioctl, + .compat_ioctl = IS_ENABLED(CONFIG_COMPAT) ? + idecd_compat_ioctl : NULL, .check_events = idecd_check_events, .revalidate_disk = idecd_revalidate_disk }; |