From: Paul Fulghum <paulkf@microgate.com>
Add ability to clear statistics.
Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
drivers/char/synclinkmp.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff -puN drivers/char/synclinkmp.c~synclinkmpc-add-statistics-clear drivers/char/synclinkmp.c
--- 25/drivers/char/synclinkmp.c~synclinkmpc-add-statistics-clear Wed Sep 7 15:52:12 2005
+++ 25-akpm/drivers/char/synclinkmp.c Wed Sep 7 15:52:12 2005
@@ -2749,6 +2749,8 @@ static int startup(SLMP_INFO * info)
info->pending_bh = 0;
+ memset(&info->icount, 0, sizeof(info->icount));
+
/* program hardware for current parameters */
reset_port(info);
@@ -2952,12 +2954,12 @@ static int get_stats(SLMP_INFO * info, s
printk("%s(%d):%s get_params()\n",
__FILE__,__LINE__, info->device_name);
- COPY_TO_USER(err,user_icount, &info->icount, sizeof(struct mgsl_icount));
- if (err) {
- if ( debug_level >= DEBUG_LEVEL_INFO )
- printk( "%s(%d):%s get_stats() user buffer copy failed\n",
- __FILE__,__LINE__,info->device_name);
- return -EFAULT;
+ if (!user_icount) {
+ memset(&info->icount, 0, sizeof(info->icount));
+ } else {
+ COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount));
+ if (err)
+ return -EFAULT;
}
return 0;
_