From: Al Viro Date: Fri, 8 May 2020 01:03:04 +0000 (-0400) Subject: drivers/fpga/dfl-afu-dma-region.c: get rid of pointless access_ok() X-Git-Tag: microblaze-v5.10~704^2~10 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=83a4f2e70470be94c582b3d09e774fc9c4470b40;p=linux-2.6-microblaze.git drivers/fpga/dfl-afu-dma-region.c: get rid of pointless access_ok() 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 --- 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;