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authorAlan Stern <stern@rowland.harvard.edu>2006-08-30 11:29:56 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-27 11:58:56 -0700
commitdd990f16a39d4e615c0b70a0ab50b79b32bfb16d (patch)
tree471ab506eb21fadf05eaea7c47a33266b9e7a7d7 /include/linux/usb.h
parenta6d2bb9ff919b4685bd684620ec7a1ffa8bf2349 (diff)
downloadop-kernel-dev-dd990f16a39d4e615c0b70a0ab50b79b32bfb16d.zip
op-kernel-dev-dd990f16a39d4e615c0b70a0ab50b79b32bfb16d.tar.gz
usbcore: Add flag for whether a host controller uses DMA
This patch (as770b) introduces a new field to usb_bus: a flag indicating whether or not the host controller uses DMA. This serves to encapsulate the computation. It also means we will have only one spot to update if the DMA API changes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 4709033..0966175 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -269,6 +269,7 @@ struct usb_bus {
struct device *controller; /* host/master side hardware */
int busnum; /* Bus number (in order of reg) */
char *bus_name; /* stable id (PCI slot_name etc) */
+ u8 uses_dma; /* Does the host controller use DMA? */
u8 otg_port; /* 0, or number of OTG/HNP port */
unsigned is_b_host:1; /* true during some HNP roleswitches */
unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
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