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staging: vchiq_arm: cast with __force as needed

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In several cases where a pointer marked as __user is
(intentionally) assigned or passed to a non-marked target,
cast to the target pointer type with a __force directive
to quiet warnings from sparse.

Signed-off-by: Mitchell Tasman <tasman@leaflabs.com>
Link: https://lore.kernel.org/r/20200519004531.33158-1-tasman@leaflabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mitchell Tasman 2020-05-18 20:45:31 -04:00 committed by Greg Kroah-Hartman
parent 49f09554fd
commit 728774f780
2 changed files with 7 additions and 4 deletions
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7
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
View File

@ -371,14 +371,15 @@ create_pagelist(char __user *buf, size_t count, unsigned short type)
pagelistinfo->scatterlist = scatterlist;
pagelistinfo->scatterlist_mapped = 0;
if (is_vmalloc_addr(buf)) {
if (is_vmalloc_addr((void __force *)buf)) {
unsigned long length = count;
unsigned int off = offset;
for (actual_pages = 0; actual_pages < num_pages;
actual_pages++) {
struct page *pg = vmalloc_to_page(buf + (actual_pages *
PAGE_SIZE));
struct page *pg =
vmalloc_to_page((void __force *)(buf +
(actual_pages * PAGE_SIZE)));
size_t bytes = PAGE_SIZE - off;
if (!pg) {

4
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
View File

@ -1209,7 +1209,9 @@ vchiq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
/* The completion must point to the
** msgbuf. */
completion->header = msgbuf;
completion->header =
(struct vchiq_header __force *)
msgbuf;
}
if ((completion->reason ==