summaryrefslogtreecommitdiff
path: root/include/linux/usb.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 00:09:47 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 00:09:47 +0400
commit55b81e6f2795484ea8edf5805c95c007cacfa736 (patch)
treec3724975107857fcc03b5dd649c462e4f72397be /include/linux/usb.h
parent5983faf942f260023e547f3c5f38c1033c35cc9b (diff)
parent08e87d0d773dc9ca5faf4c3306e238ed0ea129b0 (diff)
downloadlinux-55b81e6f2795484ea8edf5805c95c007cacfa736.tar.xz
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (232 commits) USB: Add USB-ID for Multiplex RC serial adapter to cp210x.c xhci: Clean up 32-bit build warnings. USB: update documentation for usbmon usb: usb-storage doesn't support dynamic id currently, the patch disables the feature to fix an oops drivers/usb/class/cdc-acm.c: clear dangling pointer drivers/usb/dwc3/dwc3-pci.c: introduce missing kfree drivers/usb/host/isp1760-if.c: introduce missing kfree usb: option: add ZD Incorporated HSPA modem usb: ch9: fix up MaxStreams helper USB: usb-skeleton.c: cleanup open_count USB: usb-skeleton.c: fix open/disconnect race xhci: Properly handle COMP_2ND_BW_ERR USB: remove dead code from suspend/resume path USB: add quirk for another camera drivers: usb: wusbcore: Fix dependency for USB_WUSB xhci: Better debugging for critical host errors. xhci: Be less verbose during URB cancellation. xhci: Remove debugging about ring structure allocation. xhci: Remove debugging about toggling cycle bits. xhci: Remove debugging for individual transfers. ...
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 7f8d4d61ca47..27a4e16d2bf1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1233,6 +1233,7 @@ struct urb {
void *transfer_buffer; /* (in) associated data buffer */
dma_addr_t transfer_dma; /* (in) dma addr for transfer_buffer */
struct scatterlist *sg; /* (in) scatter gather buffer list */
+ int num_mapped_sgs; /* (internal) mapped sg entries */
int num_sgs; /* (in) number of entries in the sg list */
u32 transfer_buffer_length; /* (in) data buffer length */
u32 actual_length; /* (return) actual transfer length */
@@ -1610,6 +1611,19 @@ usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
/* ----------------------------------------------------------------------- */
+/* translate USB error codes to codes user space understands */
+static inline int usb_translate_errors(int error_code)
+{
+ switch (error_code) {
+ case 0:
+ case -ENOMEM:
+ case -ENODEV:
+ return error_code;
+ default:
+ return -EIO;
+ }
+}
+
/* Events from the usb core */
#define USB_DEVICE_ADD 0x0001
#define USB_DEVICE_REMOVE 0x0002