From: Al Viro <[email protected]> Address is passed to get_user_pages_fast(), which does access_ok(). NB: this is called only from ->ioctl(), and only under USER_DS.
Signed-off-by: Al Viro <[email protected]> --- drivers/fpga/dfl-afu-dma-region.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/fpga/dfl-afu-dma-region.c b/drivers/fpga/dfl-afu-dma-region.c index 62f924489db5..d902acb36d14 100644 --- a/drivers/fpga/dfl-afu-dma-region.c +++ b/drivers/fpga/dfl-afu-dma-region.c @@ -324,10 +324,6 @@ int afu_dma_map_region(struct dfl_feature_platform_data *pdata, if (user_addr + length < user_addr) return -EINVAL; - if (!access_ok((void __user *)(unsigned long)user_addr, - length)) - return -EINVAL; - region = kzalloc(sizeof(*region), GFP_KERNEL); if (!region) return -ENOMEM; -- 2.11.0
