lkml.org 
[lkml]   [2007]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH 18/23] make atomic_read() and atomic_set() behavior consistent on sh
    From: Chris Snook <csnook@redhat.com>

    Use volatile consistently in atomic.h on sh.

    Signed-off-by: Chris Snook <csnook@redhat.com>

    --- linux-2.6.23-rc3-orig/include/asm-sh/atomic.h 2007-07-08 19:32:17.000000000 -0400
    +++ linux-2.6.23-rc3/include/asm-sh/atomic.h 2007-08-13 06:07:16.000000000 -0400
    @@ -7,12 +7,19 @@
    *
    */

    -typedef struct { volatile int counter; } atomic_t;
    +typedef struct { int counter; } atomic_t;

    #define ATOMIC_INIT(i) ( (atomic_t) { (i) } )

    -#define atomic_read(v) ((v)->counter)
    -#define atomic_set(v,i) ((v)->counter = (i))
    +static inline int atomic_read(atomic_t *v)
    +{
    + return *(volatile int *)&v->counter;
    +}
    +
    +static inline void atomic_set(atomic_t *v, int i)
    +{
    + *(volatile int *)&v->counter = i;
    +}

    #include <linux/compiler.h>
    #include <asm/system.h>
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/
    \
     
     \ /
      Last update: 2007-08-13 16:41    [W:0.022 / U:63.240 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site