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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 <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-05-07 21:39:29 -04:00
parent fe6bb59f4d
commit fd8ec4dd4a
1 changed files with 0 additions and 7 deletions
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7
drivers/infiniband/hw/hfi1/user_exp_rcv.c
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@ -206,13 +206,6 @@ static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf)
return -EINVAL; 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 */ /* Allocate the array of struct page pointers needed for pinning */
pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL); pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL);
if (!pages) if (!pages)