UBUNTU: SAUCE: mfd: intel-lpss: add quirk for Dell XPS 13 7390 2-in-1

[mirror_ubuntu-bionic-kernel.git] / lib / string.c

diff --git a/lib/string.c b/lib/string.c
index 64a9e33f1daae4b2bb02ba7dbdc0bf431756935f..72125fd5b4a64dda92169faec990a2a2d4afbc08 100644 (file)
--- a/lib/string.c
+++ b/lib/string.c
@@ -203,7 +203,7 @@ ssize_t strscpy(char *dest, const char *src, size_t count)
        while (max >= sizeof(unsigned long)) {
                unsigned long c, data;
 
-               c = *(unsigned long *)(src+res);
+               c = read_word_at_a_time(src+res);
                if (has_zero(c, &data, &constants)) {
                        data = prep_zero_mask(c, data, &constants);
                        data = create_zero_mask(data);
@@ -865,6 +865,26 @@ __visible int memcmp(const void *cs, const void *ct, size_t count)
 EXPORT_SYMBOL(memcmp);
 #endif
 
+#ifndef __HAVE_ARCH_BCMP
+/**
+ * bcmp - returns 0 if and only if the buffers have identical contents.
+ * @a: pointer to first buffer.
+ * @b: pointer to second buffer.
+ * @len: size of buffers.
+ *
+ * The sign or magnitude of a non-zero return value has no particular
+ * meaning, and architectures may implement their own more efficient bcmp(). So
+ * while this particular implementation is a simple (tail) call to memcmp, do
+ * not rely on anything but whether the return value is zero or non-zero.
+ */
+#undef bcmp
+int bcmp(const void *a, const void *b, size_t len)
+{
+       return memcmp(a, b, len);
+}
+EXPORT_SYMBOL(bcmp);
+#endif
+
 #ifndef __HAVE_ARCH_MEMSCAN
 /**
  * memscan - Find a character in an area of memory.