Messages in this thread Patch in this message | | | Subject | [PATCH] use __dma_buffer for USB | From | Roland Dreier <> | Date | 12 Jun 2002 17:27:40 -0700 |
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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 */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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