diff options
Diffstat (limited to 'drivers/staging/android/ashmem.c')
| -rw-r--r-- | drivers/staging/android/ashmem.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c index 38a9135..e681bdd 100644 --- a/drivers/staging/android/ashmem.c +++ b/drivers/staging/android/ashmem.c @@ -702,6 +702,23 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return ret; } +/* support of 32bit userspace on 64bit platforms */ +#ifdef CONFIG_COMPAT +static long compat_ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + + switch (cmd) { + case COMPAT_ASHMEM_SET_SIZE: + cmd = ASHMEM_SET_SIZE; + break; + case COMPAT_ASHMEM_SET_PROT_MASK: + cmd = ASHMEM_SET_PROT_MASK; + break; + } + return ashmem_ioctl(file, cmd, arg); +} +#endif + static const struct file_operations ashmem_fops = { .owner = THIS_MODULE, .open = ashmem_open, @@ -710,7 +727,9 @@ static const struct file_operations ashmem_fops = { .llseek = ashmem_llseek, .mmap = ashmem_mmap, .unlocked_ioctl = ashmem_ioctl, - .compat_ioctl = ashmem_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = compat_ashmem_ioctl, +#endif }; static struct miscdevice ashmem_misc = { |