[patch] synclinkmp.c add statistics clear
From: Paul Fulghum <[email protected]>
Add ability to clear statistics.
Signed-off-by: Paul Fulghum <[email protected]>
--- linux-2.6.13/drivers/char/synclinkmp.c 2005-08-28 18:41:01.000000000 -0500
+++ linux-2.6.13-mg/drivers/char/synclinkmp.c 2005-09-07 12:26:28.000000000 -0500
@@ -2750,6 +2750,8 @@ 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);
@@ -2953,12 +2955,12 @@ 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;
-
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