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USB: Change the scatterlist type in struct urb

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Change the type of the URB's 'sg' pointer from a usb_sg_request to
a scatterlist.  This allows drivers to submit scatter-gather lists
without using the usb_sg_wait() interface.  It has the added benefit
of removing the typecasts that were added as part of patch as1368 (and
slightly decreasing the number of pointer dereferences).

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Matthew Wilcox
2010-05-01 12:20:01 -06:00
committed by Greg Kroah-Hartman
parent 1e429018b6
commit 910f8d0ced
8 changed files with 13 additions and 15 deletions
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4
drivers/usb/host/whci/qset.c
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@@ -443,7 +443,7 @@ static int qset_add_urb_sg(struct whc *whc, struct whc_qset *qset, struct urb *u
remaining = urb->transfer_buffer_length;
for_each_sg(urb->sg->sg, sg, urb->num_sgs, i) {
for_each_sg(urb->sg, sg, urb->num_sgs, i) {
dma_addr_t dma_addr;
size_t dma_remaining;
dma_addr_t sp, ep;
@@ -561,7 +561,7 @@ static int qset_add_urb_sg_linearize(struct whc *whc, struct whc_qset *qset,
remaining = urb->transfer_buffer_length;
for_each_sg(urb->sg->sg, sg, urb->sg->nents, i) {
for_each_sg(urb->sg, sg, urb->num_sgs, i) {
size_t len;
size_t sg_remaining;
void *orig;