kfifo: fix sparse complaints

This patch fix complaints by the sparse tool when using kfifo_put() with
non scalar types like structures (i.e.
drivers/iio/industrialio-event.c).

Casting a pointer to the value and read this pointer instead of directly
casting the value will fix this.

The generated code is equal.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 473b43678ad12ef360801ffd9e32594285efd41a..41eb6fdf87a84d05ae43bfd769943a89abb47d98 100644 (file)
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -401,7 +401,7 @@ __kfifo_int_must_check_helper( \
                        ((typeof(__tmp->type))__kfifo->data) : \
                        (__tmp->buf) \
                        )[__kfifo->in & __tmp->kfifo.mask] = \
-                               (typeof(*__tmp->type))__val; \
+                               *(typeof(__tmp->type))&__val; \
                        smp_wmb(); \
                        __kfifo->in++; \
                } \