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Message-ID: <20080429143419.7d12812b@core>
Date: Tue, 29 Apr 2008 14:34:19 +0100
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: akpm@...l.org, linux-kernel@...r.kernel.org
Subject: [PATCH] 8250: Switch 8250 drivers to use _nocache ioremaps
Signed-off-by: Alan Cox <alan@...hat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-mm1/drivers/serial/8250.c linux-2.6.25-mm1/drivers/serial/8250.c
--- linux.vanilla-2.6.25-mm1/drivers/serial/8250.c 2008-04-28 11:36:50.000000000 +0100
+++ linux-2.6.25-mm1/drivers/serial/8250.c 2008-04-28 10:11:41.000000000 +0100
@@ -2271,7 +2271,8 @@
}
if (up->port.flags & UPF_IOREMAP) {
- up->port.membase = ioremap(up->port.mapbase, size);
+ up->port.membase = ioremap_nocache(up->port.mapbase,
+ size);
if (!up->port.membase) {
release_mem_region(up->port.mapbase, size);
ret = -ENOMEM;
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-mm1/drivers/serial/8250_early.c linux-2.6.25-mm1/drivers/serial/8250_early.c
--- linux.vanilla-2.6.25-mm1/drivers/serial/8250_early.c 2008-04-28 11:36:50.000000000 +0100
+++ linux-2.6.25-mm1/drivers/serial/8250_early.c 2008-04-28 10:11:55.000000000 +0100
@@ -153,7 +153,7 @@
(void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE);
port->membase += port->mapbase & ~PAGE_MASK;
#else
- port->membase = ioremap(port->mapbase, 64);
+ port->membase = ioremap_nocache(port->mapbase, 64);
if (!port->membase) {
printk(KERN_ERR "%s: Couldn't ioremap 0x%llx\n",
__func__,
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-mm1/drivers/serial/8250_pci.c linux-2.6.25-mm1/drivers/serial/8250_pci.c
--- linux.vanilla-2.6.25-mm1/drivers/serial/8250_pci.c 2008-04-28 11:36:50.000000000 +0100
+++ linux-2.6.25-mm1/drivers/serial/8250_pci.c 2008-04-28 10:11:16.000000000 +0100
@@ -86,7 +86,7 @@
len = pci_resource_len(dev, bar);
if (!priv->remapped_bar[bar])
- priv->remapped_bar[bar] = ioremap(base, len);
+ priv->remapped_bar[bar] = ioremap_nocache(base, len);
if (!priv->remapped_bar[bar])
return -ENOMEM;
@@ -270,7 +270,7 @@
/*
* enable/disable interrupts
*/
- p = ioremap(pci_resource_start(dev, 0), 0x80);
+ p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
if (p == NULL)
return -ENOMEM;
writel(irq_config, p + 0x4c);
@@ -294,7 +294,7 @@
/*
* disable interrupts
*/
- p = ioremap(pci_resource_start(dev, 0), 0x80);
+ p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
if (p != NULL) {
writel(0, p + 0x4c);
@@ -341,7 +341,8 @@
{
u8 __iomem *p;
- p = ioremap(pci_resource_start(dev, 0), pci_resource_len(dev, 0));
+ p = ioremap_nocache(pci_resource_start(dev, 0),
+ pci_resource_len(dev, 0));
if (p == NULL)
return -ENOMEM;
@@ -365,7 +366,8 @@
{
u8 __iomem *p;
- p = ioremap(pci_resource_start(dev, 0), pci_resource_len(dev, 0));
+ p = ioremap_nocache(pci_resource_start(dev, 0),
+ pci_resource_len(dev, 0));
/* FIXME: What if resource_len < OCT_REG_CR_OFF */
if (p != NULL)
writeb(0, p + OCT_REG_CR_OFF);
@@ -419,7 +421,7 @@
break;
}
- p = ioremap(pci_resource_start(dev, 0), 0x80);
+ p = ioremap_nocache(pci_resource_start(dev, 0), 0x80);
if (p == NULL)
return -ENOMEM;
--
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