From: Devin Heitmueller <dheitmueller@linuxtv.org>
Date: Mon, 23 Mar 2009 02:42:26 +0000 (-0300)
Subject: V4L/DVB (11142): au0828: fix oops on ARM platform when allocating transfer buffers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fadadb7d7ad1d6c09863fcf24f83e59f596201ed;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

V4L/DVB (11142): au0828: fix oops on ARM platform when allocating transfer buffers

Add missing URB_NO_TRANSFER_DMA_MAP flag, since the use of consistent memory
is not permitted for DMA on the ARM platform.

Thanks to Paul Thomas <pthomas8589@gmail.com> for providing sample ARM
hardware that was experiencing the oops (tested on the at91rm9200 based
LinuxStamp).

Thanks to David Brownell <david-b@pacbell.net> for providing insight into the
ARM memory architecture.

Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c
index d3a388af46e7..f7ad4958b94e 100644
--- a/drivers/media/video/au0828/au0828-video.c
+++ b/drivers/media/video/au0828/au0828-video.c
@@ -267,7 +267,7 @@ int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
 				 au0828_irq_callback, dma_q, 1);
 
 		urb->number_of_packets = max_packets;
-		urb->transfer_flags = URB_ISO_ASAP;
+		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 
 		k = 0;
 		for (j = 0; j < max_packets; j++) {