From: Al Viro Date: Fri, 8 May 2020 01:39:29 +0000 (-0400) Subject: hfi1: get rid of pointless access_ok() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fd8ec4dd4a79d5ad51d31d4a7664b5f82d108316;p=linux.git hfi1: get rid of pointless access_ok() pin_user_pages_fast() doesn't need that from its caller. NB: only reachable from ->ioctl(), and only under USER_DS Signed-off-by: Al Viro --- diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c index 4da03f8234749..f81ca20f4b693 100644 --- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c +++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c @@ -206,13 +206,6 @@ static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf) return -EINVAL; } - /* Verify that access is OK for the user buffer */ - if (!access_ok((void __user *)vaddr, - npages * PAGE_SIZE)) { - dd_dev_err(dd, "Fail vaddr %p, %u pages, !access_ok\n", - (void *)vaddr, npages); - return -EFAULT; - } /* Allocate the array of struct page pointers needed for pinning */ pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL); if (!pages)