linux-kernel - [PATCH 5/8] i386: bitops: Contain warnings fallout from the death of volatiles

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Date:	Mon, 23 Jul 2007 21:35:53 +0530
From:	Satyam Sharma <ssatyam@....iitk.ac.in>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	David Howells <dhowells@...hat.com>,
	Nick Piggin <nickpiggin@...oo.com.au>, Andi Kleen <ak@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 5/8] i386: bitops: Contain warnings fallout from the death of volatiles

From: Satyam Sharma <ssatyam@....iitk.ac.in>

[5/8] i386: bitops: Contain warnings fallout from the death of volatiles

The wrappers below included from all over tree re-used "volatile" just
because the bitops used them. With them killed, almost every file ends
up crying about:

warning: passing argument 2 of 'set_bit' discards qualifiers from
pointer target type

Silence these bogus warnings by killing volatile casts a second time.

Signed-off-by: Satyam Sharma <ssatyam@....iitk.ac.in>
Cc: David Howells <dhowells@...hat.com>
Cc: Nick Piggin <nickpiggin@...oo.com.au>

---

[ Cscope tells us there are other such wrappers that didn't show up
  in my test .config -- I'll update them shortly.

  Also, I should probably merge this patch with the previous one.
  Otherwise git-bisecters who hit the window between these two
  patches will be flooded with bogus warnings and would probably
  want to kill me :-) ]

 include/linux/cpumask.h  |    4 ++--
 include/linux/nodemask.h |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 23f5514..49f6ed4 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -89,13 +89,13 @@ typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t;
 extern cpumask_t _unused_cpumask_arg_;
 
 #define cpu_set(cpu, dst) __cpu_set((cpu), &(dst))
-static inline void __cpu_set(int cpu, volatile cpumask_t *dstp)
+static inline void __cpu_set(int cpu, cpumask_t *dstp)
 {
 	set_bit(cpu, dstp->bits);
 }
 
 #define cpu_clear(cpu, dst) __cpu_clear((cpu), &(dst))
-static inline void __cpu_clear(int cpu, volatile cpumask_t *dstp)
+static inline void __cpu_clear(int cpu, cpumask_t *dstp)
 {
 	clear_bit(cpu, dstp->bits);
 }
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 52c54a5..81ba056 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -89,13 +89,13 @@ typedef struct { DECLARE_BITMAP(bits, MAX_NUMNODES); } nodemask_t;
 extern nodemask_t _unused_nodemask_arg_;
 
 #define node_set(node, dst) __node_set((node), &(dst))
-static inline void __node_set(int node, volatile nodemask_t *dstp)
+static inline void __node_set(int node, nodemask_t *dstp)
 {
 	set_bit(node, dstp->bits);
 }
 
 #define node_clear(node, dst) __node_clear((node), &(dst))
-static inline void __node_clear(int node, volatile nodemask_t *dstp)
+static inline void __node_clear(int node, nodemask_t *dstp)
 {
 	clear_bit(node, dstp->bits);
 }
-
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