Use __dma_buffer to align buffer in struct usb_hub and descriptor in
struct usb_device since both are used for DMA.
Patch is against 2.4.19-pre10.
Thanks,
Roland
drivers/usb/hub.h | 3 ++-
include/linux/usb.h | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff -Naur linux-2.4.19-pre9.orig/drivers/usb/hub.h linux-2.4.19-pre9/drivers/usb/hub.h
--- linux-2.4.19-pre9.orig/drivers/usb/hub.h Wed Jun 12 14:53:36 2002
+++ linux-2.4.19-pre9/drivers/usb/hub.h Wed Jun 12 14:55:58 2002
@@ -3,6 +3,7 @@
#include <linux/list.h>
#include <linux/compiler.h> /* likely()/unlikely() */
+#include <asm/dma_buffer.h>
/*
* Hub request types
@@ -125,7 +126,7 @@
struct urb *urb; /* Interrupt polling pipe */
- char buffer[(USB_MAXCHILDREN + 1 + 7) / 8]; /* add 1 bit for hub status change
*/
+ char buffer[(USB_MAXCHILDREN + 1 + 7) / 8] __dma_buffer; /* add 1 bit for hub
+status change */
/* and add 7 bits to round up to byte boundary
*/
int error;
int nerrors;
diff -Naur linux-2.4.19-pre9.orig/include/linux/usb.h
linux-2.4.19-pre9/include/linux/usb.h
--- linux-2.4.19-pre9.orig/include/linux/usb.h Wed Jun 12 14:53:52 2002
+++ linux-2.4.19-pre9/include/linux/usb.h Wed Jun 12 14:55:40 2002
@@ -139,6 +139,7 @@
#include <linux/interrupt.h> /* for in_interrupt() */
#include <linux/config.h>
#include <linux/list.h>
+#include <asm/dma_buffer.h>
#define USB_MAJOR 180
@@ -781,7 +782,7 @@
struct usb_device *parent;
struct usb_bus *bus; /* Bus we're part of */
- struct usb_device_descriptor descriptor;/* Descriptor */
+ struct usb_device_descriptor descriptor __dma_buffer;/* Descriptor */
struct usb_config_descriptor *config; /* All of the configs */
struct usb_config_descriptor *actconfig;/* the active configuration */
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