From: Paul Fulghum <paulkf@microgate.com>
Add the ability to clear statistics.
Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
drivers/char/synclink.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff -puN drivers/char/synclink.c~synclinkc-add-clear-stats drivers/char/synclink.c
--- 25/drivers/char/synclink.c~synclinkc-add-clear-stats Wed Sep 7 15:52:04 2005
+++ 25-akpm/drivers/char/synclink.c Wed Sep 7 15:52:04 2005
@@ -1814,6 +1814,8 @@ static int startup(struct mgsl_struct *
info->pending_bh = 0;
+ memset(&info->icount, 0, sizeof(info->icount));
+
init_timer(&info->tx_timer);
info->tx_timer.data = (unsigned long)info;
info->tx_timer.function = mgsl_tx_timeout;
@@ -2470,12 +2472,12 @@ static int mgsl_get_stats(struct mgsl_st
printk("%s(%d):mgsl_get_params(%s)\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):mgsl_get_stats(%s) 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;
_