linux-mips
[Top] [All Lists]

[PATCH] better bar size calculation

To: ralf@oss.sgi.com
Subject: [PATCH] better bar size calculation
From: "Bradley D. LaRonde" <brad@ltc.com>
Date: Mon, 1 Jul 2002 14:50:13 -0400
Cc: linux-mips@oss.sgi.com
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.3.20i
# 02/07/01      brad@dev1.(none)        1.72
# better bar size calculation

diff -Nru a/arch/mips/kernel/pci_auto.c b/arch/mips/kernel/pci_auto.c
--- a/arch/mips/kernel/pci_auto.c       Mon Jul  1 14:48:47 2002
+++ b/arch/mips/kernel/pci_auto.c       Mon Jul  1 14:48:47 2002
@@ -35,6 +35,7 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/pci.h>
+#include <linux/bitops.h>
 
 #include <asm/pci_channel.h>
 
@@ -152,7 +153,7 @@
 
 
                /* Calculate requested size */
-               bar_size = ~(bar_response & addr_mask) + 1;
+               bar_size = 1 << (ffs(bar_response & addr_mask) - 1);
 
                /* Allocate a base address */
                bar_value = ((*lower_limit - 1) & ~(bar_size - 1)) + bar_size;


<Prev in Thread] Current Thread [Next in Thread>
  • [PATCH] better bar size calculation, Bradley D. LaRonde <=