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authorPaul Fulghum <paulkf@microgate.com>2005-09-09 13:02:16 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 13:57:34 -0700
commit166692e4a045348109f66b493e1b41afde6f3769 (patch)
tree1c00708bb8038dc2060633cf9a6161f7f2a96851 /drivers/char/synclinkmp.c
parent761a444d8d059e4e2de326383b1dec4a636e0a92 (diff)
[PATCH] synclinkmp.c: add statistics clear
Add ability to clear statistics. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/synclinkmp.c')
-rw-r--r--drivers/char/synclinkmp.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index d55dbf1f9e1..eb31a3b865d 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -2748,6 +2748,8 @@ 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);
@@ -2951,12 +2953,12 @@ static int get_stats(SLMP_INFO * info, struct mgsl_icount __user *user_icount)
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;