From: James Bottomley <James.Bottomley@SteelEye.com>
Date: Tue, 16 Oct 2007 08:23:58 +0000 (-0700)
Subject: pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices
X-Git-Tag: v2.6.24-rc1~1259
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43d9f7fda11a3413c99fbbde35005ec3138eb865;p=linux-2.6

pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices

Most non cardbus devices can't do dma, so flag them as such in the device
creation routine.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 55baa1f0fc..7bf78c1278 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -23,6 +23,7 @@
 #include <linux/crc32.h>
 #include <linux/firmware.h>
 #include <linux/kref.h>
+#include <linux/dma-mapping.h>
 
 #define IN_CARD_SERVICES
 #include <pcmcia/cs_types.h>
@@ -670,6 +671,9 @@ struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int f
 	p_dev->dev.bus = &pcmcia_bus_type;
 	p_dev->dev.parent = s->dev.parent;
 	p_dev->dev.release = pcmcia_release_dev;
+	/* by default don't allow DMA */
+	p_dev->dma_mask = DMA_MASK_NONE;
+	p_dev->dev.dma_mask = &p_dev->dma_mask;
 	bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
 
 	p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h
index 90ef552c42..f047a1fd64 100644
--- a/include/pcmcia/ds.h
+++ b/include/pcmcia/ds.h
@@ -184,6 +184,7 @@ struct pcmcia_device {
 
 	char *			prod_id[4];
 
+	u64			dma_mask;
 	struct device		dev;
 
 #ifdef CONFIG_PCMCIA_IOCTL