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drm: fix radeon setparam on 32/64 bit systems.

Browse source 
The alignment on 64-bit is different for 64-bit values.

Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie 2007-06-10 16:00:27 +10:00
parent dc7a93190c
commit 9b01bd5b28
1 changed files with 26 additions and 0 deletions
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26
drivers/char/drm/radeon_ioc32.c
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@ -349,6 +349,31 @@ static int compat_radeon_irq_emit(struct file *file, unsigned int cmd,
DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request);
}
typedef struct drm_radeon_setparam32 {
int param;
u64 value;
} __attribute__((packed)) drm_radeon_setparam32_t;
static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_radeon_setparam32_t req32;
drm_radeon_setparam_t __user *request;
if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| __put_user(req32.param, &request->param)
|| __put_user((void __user *)(unsigned long)req32.value,
&request->value))
return -EFAULT;
return drm_ioctl(file->f_dentry->d_inode, file,
DRM_IOCTL_RADEON_SETPARAM, (unsigned long) request);
}
drm_ioctl_compat_t *radeon_compat_ioctls[] = {
[DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
[DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
@ -357,6 +382,7 @@ drm_ioctl_compat_t *radeon_compat_ioctls[] = {
[DRM_RADEON_VERTEX2] = compat_radeon_cp_vertex2,
[DRM_RADEON_CMDBUF] = compat_radeon_cp_cmdbuf,
[DRM_RADEON_GETPARAM] = compat_radeon_cp_getparam,
[DRM_RADEON_SETPARAM] = compat_radeon_cp_setparam,
[DRM_RADEON_ALLOC] = compat_radeon_mem_alloc,
[DRM_RADEON_IRQ_EMIT] = compat_radeon_irq_emit,
};