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usb: host: ehci: make use of new usb_endpoint_maxp_mult()

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We have introduced a helper to calculate multiplier
value from wMaxPacketSize. Start using it.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-09-28 13:38:18 +03:00
parent df4769e37a
commit e3b89080f2
2 changed files with 7 additions and 5 deletions
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10
drivers/usb/host/ehci-q.c
View File

@ -550,8 +550,6 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
/*-------------------------------------------------------------------------*/
// high bandwidth multiplier, as encoded in highspeed endpoint descriptors
#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
// ... and packet size, for any kind of endpoint descriptor
#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
@ -770,9 +768,11 @@ qh_make (
gfp_t flags
) {
struct ehci_qh *qh = ehci_qh_alloc (ehci, flags);
struct usb_host_endpoint *ep;
u32 info1 = 0, info2 = 0;
int is_input, type;
int maxp = 0;
int mult;
struct usb_tt *tt = urb->dev->tt;
struct ehci_qh_hw *hw;
@ -787,7 +787,9 @@ qh_make (
is_input = usb_pipein (urb->pipe);
type = usb_pipetype (urb->pipe);
ep = usb_pipe_endpoint (urb->dev, urb->pipe);
maxp = usb_maxpacket (urb->dev, urb->pipe, !is_input);
mult = usb_endpoint_maxp_mult (&ep->desc);
/* 1024 byte maxpacket is a hardware ceiling. High bandwidth
* acts like up to 3KB, but is built from smaller packets.
@ -810,7 +812,7 @@ qh_make (
qh->ps.usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH,
is_input, 0,
hb_mult(maxp) * max_packet(maxp)));
mult * max_packet(maxp)));
qh->ps.phase = NO_FRAME;
if (urb->dev->speed == USB_SPEED_HIGH) {
@ -929,7 +931,7 @@ qh_make (
info2 |= (EHCI_TUNE_MULT_HS << 30);
} else { /* PIPE_INTERRUPT */
info1 |= max_packet (maxp) << 16;
info2 |= hb_mult (maxp) << 30;
info2 |= mult << 30;
}
break;
default:

2
drivers/usb/host/ehci-sched.c
View File

@ -1064,7 +1064,7 @@ iso_stream_init(
/* knows about ITD vs SITD */
if (dev->speed == USB_SPEED_HIGH) {
unsigned multi = hb_mult(maxp);
unsigned multi = usb_endpoint_maxp_mult(&urb->ep->desc);
stream->highspeed = 1;