linux-kernel - [PATCH] drivers: rtl818x: request DMA-able memory

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Message-Id: <1287952327-9924-1-git-send-email-sez@debian.org>
Date:	Sun, 24 Oct 2010 22:32:07 +0200
From:	Serafeim Zanikolas <sez@...ian.org>
To:	herton@...driva.com.br, htl10@...rs.sourceforge.net,
	Larry.Finger@...inger.net, linville@...driver.com, joe@...ches.com,
	davem@...emloft.net, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Serafeim Zanikolas <sez@...ian.org>
Subject: [PATCH] drivers: rtl818x: request DMA-able memory

Despite the indicated intention in comment, the kmalloc() call was not
explicitly requesting memory from ZONE_DMA.

Signed-off-by: Serafeim Zanikolas <sez@...ian.org>
---
 drivers/net/wireless/rtl818x/rtl8187_dev.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/rtl818x/rtl8187_dev.c b/drivers/net/wireless/rtl818x/rtl8187_dev.c
index 38fa824..771794d 100644
--- a/drivers/net/wireless/rtl818x/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187_dev.c
@@ -1343,7 +1343,8 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
 	priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
 
 	/* allocate "DMA aware" buffer for register accesses */
-	priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
+	priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf),
+				  GFP_DMA | GFP_KERNEL);
 	if (!priv->io_dmabuf) {
 		err = -ENOMEM;
 		goto err_free_dev;
-- 
1.7.1

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