diff options
author | Jiri Kosina <jkosina@suse.cz> | 2019-11-29 22:34:28 +0300 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2019-11-29 22:34:28 +0300 |
commit | b746a1a2860f4a918f32d10dc569115d282aaf2f (patch) | |
tree | 4b30e6ff28e2783c73a1b763e819f5b41414563c /lib/strnlen_user.c | |
parent | 8725aa4fa7ded30211ebd28bb1c9bae806eb3841 (diff) | |
parent | b03e5774d51fe003e1020060c403a1d085b128eb (diff) | |
download | linux-b746a1a2860f4a918f32d10dc569115d282aaf2f.tar.xz |
Merge branch 'for-5.5/core' into for-linus
- hid_have_special_driver[] cleanup for LED devices (Heiner Kallweit)
- HID parser improvements (Blaž Hrastnik, Candle Sun)
Diffstat (limited to 'lib/strnlen_user.c')
-rw-r--r-- | lib/strnlen_user.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c index 7f2db3fe311f..6c0005d5dd5c 100644 --- a/lib/strnlen_user.c +++ b/lib/strnlen_user.c @@ -2,16 +2,11 @@ #include <linux/kernel.h> #include <linux/export.h> #include <linux/uaccess.h> +#include <linux/mm.h> +#include <linux/bitops.h> #include <asm/word-at-a-time.h> -/* Set bits in the first 'n' bytes when loaded from memory */ -#ifdef __LITTLE_ENDIAN -# define aligned_byte_mask(n) ((1ul << 8*(n))-1) -#else -# define aligned_byte_mask(n) (~0xfful << (BITS_PER_LONG - 8 - 8*(n))) -#endif - /* * Do a strnlen, return length of string *with* final '\0'. * 'count' is the user-supplied count, while 'max' is the @@ -109,7 +104,7 @@ long strnlen_user(const char __user *str, long count) return 0; max_addr = user_addr_max(); - src_addr = (unsigned long)str; + src_addr = (unsigned long)untagged_addr(str); if (likely(src_addr < max_addr)) { unsigned long max = max_addr - src_addr; long retval; |