[PATCH] USB: UHCI: Split apart the physical and logical framelist arrays
This patch (as563) splits the physical and logical framelist arrays in
uhci-hcd into two separate pieces. This will allow slightly better memory
utilization, since each piece is no larger than a single page whereas
before the whole thing was a little bigger than two pages. It also allows
the logical array to be allocated in non-DMA-coherent memory.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index d540382..51de06b 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -89,10 +89,10 @@
td->frame = framenum;
/* Is there a TD already mapped there? */
- if (uhci->fl->frame_cpu[framenum]) {
+ if (uhci->frame_cpu[framenum]) {
struct uhci_td *ftd, *ltd;
- ftd = uhci->fl->frame_cpu[framenum];
+ ftd = uhci->frame_cpu[framenum];
ltd = list_entry(ftd->fl_list.prev, struct uhci_td, fl_list);
list_add_tail(&td->fl_list, &ftd->fl_list);
@@ -101,10 +101,10 @@
wmb();
ltd->link = cpu_to_le32(td->dma_handle);
} else {
- td->link = uhci->fl->frame[framenum];
+ td->link = uhci->frame[framenum];
wmb();
- uhci->fl->frame[framenum] = cpu_to_le32(td->dma_handle);
- uhci->fl->frame_cpu[framenum] = td;
+ uhci->frame[framenum] = cpu_to_le32(td->dma_handle);
+ uhci->frame_cpu[framenum] = td;
}
}
@@ -114,16 +114,16 @@
if (td->frame == -1 && list_empty(&td->fl_list))
return;
- if (td->frame != -1 && uhci->fl->frame_cpu[td->frame] == td) {
+ if (td->frame != -1 && uhci->frame_cpu[td->frame] == td) {
if (list_empty(&td->fl_list)) {
- uhci->fl->frame[td->frame] = td->link;
- uhci->fl->frame_cpu[td->frame] = NULL;
+ uhci->frame[td->frame] = td->link;
+ uhci->frame_cpu[td->frame] = NULL;
} else {
struct uhci_td *ntd;
ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list);
- uhci->fl->frame[td->frame] = cpu_to_le32(ntd->dma_handle);
- uhci->fl->frame_cpu[td->frame] = ntd;
+ uhci->frame[td->frame] = cpu_to_le32(ntd->dma_handle);
+ uhci->frame_cpu[td->frame] = ntd;
}
} else {
struct uhci_td *ptd;