From 5cdb8205e917c09fd1348e4b22e26492e8c45b36 Mon Sep 17 00:00:00 2001
From: Grant Grundler <grundler@parisc-linux.org>
Date: Tue, 10 Jan 2006 20:47:57 -0500
Subject: [PATCH] [PARISC] Fix BLK_BOUNCE_HIGH on parisc by initializing
 max_low_pfn

max_low_pfn was not being set in arch/parisc/mm/init.c, causing severe
problems whenever anything tried to use BLK_BOUNCE_HIGH. Set it to
max_pfn like other similar architectures do.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
---
 arch/parisc/mm/init.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index f2e7f13ddeeb..720287d46e55 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -300,6 +300,13 @@ static void __init setup_bootmem(void)
 			max_pfn = start_pfn + npages;
 	}
 
+	/* IOMMU is always used to access "high mem" on those boxes
+	 * that can support enough mem that a PCI device couldn't
+	 * directly DMA to any physical addresses.
+	 * ISA DMA support will need to revisit this.
+	 */
+	max_low_pfn = max_pfn;
+
 	if ((bootmap_pfn - bootmap_start_pfn) != bootmap_pages) {
 		printk(KERN_WARNING "WARNING! bootmap sizing is messed up!\n");
 		BUG();
-- 
2.30.2