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From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] fix warning in drivers/net/sis900.c
Date: Wed, 19 Mar 2003 23:34:16 -0800	[thread overview]
Message-ID: <13270000.1048145654@[10.10.2.4]> (raw)
In-Reply-To: <3E60EC7D.2040802@pobox.com>

>> drivers/net/sis900.c: In function `set_rx_mode':
>> drivers/net/sis900.c:2100: warning: passing arg 2 of `set_bit' from incompatible pointer type
>> 
>> I just cast this. Seems to work fine at the moment, so presumably it's
>> correct.
> 
> 
> Nope -- set_bit wants to work on a real unsigned long.  
> While your patch will work, the proper fix is to not use set_bit :)

Fair enough. How about this? (compile tested, but not machine-tested)
mc_filter is declared as this ...
u16 mc_filter[16] = {0};        /* 256/128 bits multicast hash table */
so I just split off the high & low parts, and use them seperately ...

M.

diff -urpN -X /home/fletch/.diff.exclude virgin/drivers/net/sis900.c sisfix/drivers/net/sis900.c
--- virgin/drivers/net/sis900.c	Mon Mar 17 21:43:45 2003
+++ sisfix/drivers/net/sis900.c	Wed Mar 19 23:27:49 2003
@@ -2094,10 +2094,13 @@ static void set_rx_mode(struct net_devic
 		   use Receive Filter to reject unwanted MCAST packet */
 		struct dev_mc_list *mclist;
 		rx_mode = RFAAB;
-		for (i = 0, mclist = net_dev->mc_list; mclist && i < net_dev->mc_count;
-		     i++, mclist = mclist->next)
-			set_bit(sis900_compute_hashtable_index(mclist->dmi_addr, revision),
-				mc_filter);
+		for (i = 0, mclist = net_dev->mc_list; 
+					mclist && i < net_dev->mc_count;
+					i++, mclist = mclist->next) {
+			int index = sis900_compute_hashtable_index(
+						mclist->dmi_addr, revision);
+			mc_filter[index/16] |= (u16) (1 << (index & 0xff));
+		}
 	}
 
 	/* update Multicast Hash Table in Receive Filter */


      reply	other threads:[~2003-03-20  7:23 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-03-01 17:11 Martin J. Bligh
2003-03-01 17:23 ` Jeff Garzik
2003-03-20  7:34   ` Martin J. Bligh [this message]

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