[PATCH 10/13, revised] drivers/usb/gadget: use USB API functionsrather than constants

From: Julia Lawall
Date: Mon Dec 29 2008 - 16:50:25 EST

As compared to the previous version, the includes of usb.h have been dropped.
This patch depends on the previously submitted patch "Move definitions from
usb.h to usb/ch9.h".



From: Julia Lawall <julia@xxxxxxx>

This set of patches introduces calls to the following set of functions:

usb_endpoint_dir_in(epd)
usb_endpoint_dir_out(epd)
usb_endpoint_is_bulk_in(epd)
usb_endpoint_is_bulk_out(epd)
usb_endpoint_is_int_in(epd)
usb_endpoint_is_int_out(epd)
usb_endpoint_is_isoc_in(epd)
usb_endpoint_is_isoc_out(epd)
usb_endpoint_num(epd)
usb_endpoint_type(epd)
usb_endpoint_xfer_bulk(epd)
usb_endpoint_xfer_control(epd)
usb_endpoint_xfer_int(epd)
usb_endpoint_xfer_isoc(epd)

In some cases, introducing one of these functions is not possible, and it
just replaces an explicit integer value by one of the following constants:

USB_ENDPOINT_XFER_BULK
USB_ENDPOINT_XFER_CONTROL
USB_ENDPOINT_XFER_INT
USB_ENDPOINT_XFER_ISOC

An extract of the semantic patch that makes these changes is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r1@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) ==
- \(USB_ENDPOINT_XFER_CONTROL\|0\))
+ usb_endpoint_xfer_control(epd)

@r5@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
- \(USB_DIR_IN\|0x80\))
+ usb_endpoint_dir_in(epd)
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/usb/gadget/at91_udc.c | 2 +-
drivers/usb/gadget/atmel_usba_udc.c | 6 +++---
drivers/usb/gadget/dummy_hcd.c | 10 +++++-----
drivers/usb/gadget/epautoconf.c | 10 +++++-----
drivers/usb/gadget/fsl_qe_udc.c | 8 ++++----
drivers/usb/gadget/fsl_usb2_udc.c | 16 +++++++---------
drivers/usb/gadget/goku_udc.c | 4 ++--
drivers/usb/gadget/m66592-udc.c | 12 ++++++------
drivers/usb/gadget/net2280.c | 9 ++++-----
drivers/usb/gadget/s3c2410_udc.c | 4 ++--
10 files changed, 39 insertions(+), 42 deletions(-)

diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 0b2bb8f..0e27960 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -485,7 +486,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
return -ESHUTDOWN;
}

- tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+ tmp = usb_endpoint_type(desc);
switch (tmp) {
case USB_ENDPOINT_XFER_CONTROL:
DBG("only one control endpoint\n");
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 65b03e3..ddf00a7 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -529,7 +530,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)

maxpacket = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;

- if (((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) != ep->index)
+ if ((usb_endpoint_num(desc) != ep->index)
|| ep->index == 0
|| desc->bDescriptorType != USB_DT_ENDPOINT
|| maxpacket == 0
@@ -550,12 +551,12 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
DBG(DBG_HW, "%s: EPT_SIZE = %lu (maxpacket = %lu)\n",
ep->ep.name, ept_cfg, maxpacket);

- if ((desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ if (usb_endpoint_dir_in(desc)) {
ep->is_in = 1;
ept_cfg |= USBA_EPT_DIR_IN;
}

- switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_CONTROL:
ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL);
ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE);
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 9064696..f51ae30 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -356,7 +356,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
* especially for "ep9out" style fixed function ones.)
*/
retval = -EINVAL;
- switch (desc->bmAttributes & 0x03) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_BULK:
if (strstr (ep->ep.name, "-iso")
|| strstr (ep->ep.name, "-int")) {
@@ -423,8 +423,8 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)

dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n",
_ep->name,
- desc->bEndpointAddress & 0x0f,
- (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
+ usb_endpoint_num(desc),
+ usb_endpoint_dir_in(desc) ? "in" : "out",
({ char *val;
switch (desc->bmAttributes & 0x03) {
case USB_ENDPOINT_XFER_BULK: val = "bulk"; break;
@@ -533,7 +533,7 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req,
spin_lock_irqsave (&dum->lock, flags);

/* implement an emulated single-request FIFO */
- if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) &&
+ if (ep->desc && usb_endpoint_dir_in(ep->desc) &&
list_empty (&dum->fifo_req.queue) &&
list_empty (&ep->queue) &&
_req->length <= FIFO_SIZE) {
@@ -612,7 +612,7 @@ dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
return -ESHUTDOWN;
if (!value)
ep->halted = ep->wedged = 0;
- else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) &&
+ else if (ep->desc && usb_endpoint_dir_in(ep->desc) &&
!list_empty (&ep->queue))
return -EAGAIN;
else {
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index a36b117..8b3f994 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -75,7 +76,7 @@ ep_matches (
return 0;

/* only support ep0 for portable CONTROL traffic */
- type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+ type = usb_endpoint_type(desc);
if (USB_ENDPOINT_XFER_CONTROL == type)
return 0;

@@ -118,7 +119,7 @@ ep_matches (
/* direction-restriction: "..in-..", "out-.." */
tmp--;
if (!isdigit (*tmp)) {
- if (desc->bEndpointAddress & USB_DIR_IN) {
+ if (usb_endpoint_dir_in(desc)) {
if ('n' != *tmp)
return 0;
} else {
@@ -164,7 +165,7 @@ ep_matches (
u8 num = simple_strtoul (&ep->name [2], NULL, 10);
desc->bEndpointAddress |= num;
#ifdef MANY_ENDPOINTS
- } else if (desc->bEndpointAddress & USB_DIR_IN) {
+ } else if (usb_endpoint_dir_in(desc)) {
if (++in_epnum > 15)
return 0;
desc->bEndpointAddress = USB_DIR_IN | in_epnum;
@@ -237,7 +238,7 @@ struct usb_ep * __init usb_ep_autoconfig (
struct usb_ep *ep;
u8 type;

- type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+ type = usb_endpoint_type(desc);

/* First, apply chip-specific "best usage" knowledge.
* This might make a good usb_gadget_ops hook ...
@@ -258,7 +259,7 @@ struct usb_ep * __init usb_ep_autoconfig (
if (ep && ep_matches (gadget, ep, desc))
return ep;
} else if (USB_ENDPOINT_XFER_BULK == type
- && (USB_DIR_IN & desc->bEndpointAddress)) {
+ && usb_endpoint_dir_in(desc)) {
/* DMA may be available */
ep = find_ep (gadget, "ep2-bulk");
if (ep && ep_matches (gadget, ep, desc))
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index d6c5bcd..5ae4bdb 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -488,10 +489,10 @@ static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num)
epparam = udc->ep_param[pipe_num];

usep = 0;
- logepnum = (ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ logepnum = usb_endpoint_num(ep->desc);
usep |= (logepnum << USB_EPNUM_SHIFT);

- switch (ep->desc->bmAttributes & 0x03) {
+ switch (usb_endpoint_type(ep->desc)) {
case USB_ENDPOINT_XFER_BULK:
usep |= USB_TRANS_BULK;
break;
@@ -545,7 +546,7 @@ static int qe_ep_init(struct qe_udc *udc,
/* Refer to USB2.0 spec table 9-13,
*/
if (pipe_num != 0) {
- switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_BULK:
if (strstr(ep->ep.name, "-iso")
|| strstr(ep->ep.name, "-int"))
@@ -642,7 +643,7 @@ static int qe_ep_init(struct qe_udc *udc,

/* initialize ep structure */
ep->ep.maxpacket = max;
- ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
+ ep->tm = (u8)usb_endpoint_type(desc);
ep->desc = desc;
ep->stopped = 0;
ep->init = 1;
diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c
index f3c6703..7e06e51 100644
--- a/drivers/usb/gadget/fsl_usb2_udc.c
+++ b/drivers/usb/gadget/fsl_usb2_udc.c
@@ -465,7 +466,7 @@ static int fsl_ep_enable(struct usb_ep *_ep,
zlt = 1;

/* Assume the max packet size from gadget is always correct */
- switch (desc->bmAttributes & 0x03) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_CONTROL:
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
@@ -496,25 +497,23 @@ static int fsl_ep_enable(struct usb_ep *_ep,
/* Init EPx Queue Head (Ep Capabilites field in QH
* according to max, zlt, mult) */
struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
- (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ (unsigned char) (usb_endpoint_dir_in(desc)
? USB_SEND : USB_RECV),
- (unsigned char) (desc->bmAttributes
- & USB_ENDPOINT_XFERTYPE_MASK),
+ (unsigned char) usb_endpoint_type(desc),
max, zlt, mult);

/* Init endpoint ctrl register */
dr_ep_setup((unsigned char) ep_index(ep),
- (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ (unsigned char) (usb_endpoint_dir_in(desc)
? USB_SEND : USB_RECV),
- (unsigned char) (desc->bmAttributes
- & USB_ENDPOINT_XFERTYPE_MASK));
+ (unsigned char) usb_endpoint_type(desc));

spin_unlock_irqrestore(&udc->lock, flags);
retval = 0;

VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
- ep->desc->bEndpointAddress & 0x0f,
- (desc->bEndpointAddress & USB_DIR_IN)
+ usb_endpoint_num(ep->desc),
+ usb_endpoint_dir_in(desc)
? "in" : "out", max);
en_done:
return retval;
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index 60aa048..70d38b8 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -110,10 +111,10 @@ goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
return -EINVAL;
if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
return -ESHUTDOWN;
- if (ep->num != (desc->bEndpointAddress & 0x0f))
+ if (ep->num != usb_endpoint_num(desc))
return -EINVAL;

- switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
break;
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 43dcf9e..ed29838 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -395,7 +396,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
ep->pipenum = pipenum;
ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
m66592->pipenum2ep[pipenum] = ep;
- m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
+ m66592->epaddr2ep[usb_endpoint_num(desc)] = ep;
INIT_LIST_HEAD(&ep->queue);
}

@@ -427,7 +428,7 @@ static int alloc_pipe_config(struct m66592_ep *ep,

BUG_ON(ep->pipenum);

- switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_BULK:
if (m66592->bulk >= M66592_MAX_NUM_BULK) {
if (m66592->isochronous >= M66592_MAX_NUM_ISOC) {
@@ -469,10 +470,10 @@ static int alloc_pipe_config(struct m66592_ep *ep,
}
ep->type = info.type;

- info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ info.epnum = usb_endpoint_num(desc);
info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
info.interval = desc->bInterval;
- if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ if (usb_endpoint_dir_in(desc))
info.dir_in = 1;
else
info.dir_in = 0;
@@ -591,7 +592,7 @@ static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req)

static void start_packet(struct m66592_ep *ep, struct m66592_request *req)
{
- if (ep->desc->bEndpointAddress & USB_DIR_IN)
+ if (usb_endpoint_dir_in(ep->desc))
start_packet_write(ep, req);
else
start_packet_read(ep, req);
@@ -905,7 +906,7 @@ static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb)
ep = m66592->pipenum2ep[pipenum];
req = list_entry(ep->queue.next,
struct m66592_request, queue);
- if (ep->desc->bEndpointAddress & USB_DIR_IN)
+ if (usb_endpoint_dir_in(ep->desc))
irq_packet_write(ep, req);
else
irq_packet_read(ep, req);
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 12c6d83..8a1e5a7 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -164,7 +165,7 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
return -ESHUTDOWN;

/* erratum 0119 workaround ties up an endpoint number */
- if ((desc->bEndpointAddress & 0x0f) == EP_DONTUSE)
+ if (usb_endpoint_num(desc) == EP_DONTUSE)
return -EDOM;

/* sanity check ep-e/ep-f since their fifos are small */
@@ -195,12 +196,12 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)

/* set type, direction, address; reset fifo counters */
writel ((1 << FIFO_FLUSH), &ep->regs->ep_stat);
- tmp = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
+ tmp = usb_endpoint_type(desc);
if (tmp == USB_ENDPOINT_XFER_INT) {
/* erratum 0105 workaround prevents hs NYET */
if (dev->chiprev == 0100
&& dev->gadget.speed == USB_SPEED_HIGH
- && !(desc->bEndpointAddress & USB_DIR_IN))
+ && !usb_endpoint_dir_in(desc))
writel ((1 << CLEAR_NAK_OUT_PACKETS_MODE),
&ep->regs->ep_rsp);
} else if (tmp == USB_ENDPOINT_XFER_BULK) {
@@ -1230,8 +1231,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
return -EINVAL;
if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
return -ESHUTDOWN;
- if (ep->desc /* not ep0 */ && (ep->desc->bmAttributes & 0x03)
- == USB_ENDPOINT_XFER_ISOC)
+ if (ep->desc /* not ep0 */ && usb_endpoint_xfer_isoc(ep->desc))
return -EINVAL;

spin_lock_irqsave (&ep->dev->lock, flags);
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 9a2b892..31a7617 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1077,7 +1077,7 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep,
udc_write(max >> 3, S3C2410_UDC_MAXP_REG);

/* set type, direction, address; reset fifo counters */
- if (desc->bEndpointAddress & USB_DIR_IN) {
+ if (usb_endpoint_dir_in(desc)) {
csr1 = S3C2410_UDC_ICSR1_FFLUSH|S3C2410_UDC_ICSR1_CLRDT;
csr2 = S3C2410_UDC_ICSR2_MODEIN|S3C2410_UDC_ICSR2_DMAIEN;

@@ -1112,7 +1112,7 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep,
tmp = desc->bEndpointAddress;
dprintk (DEBUG_NORMAL, "enable %s(%d) ep%x%s-blk max %02x\n",
_ep->name,ep->num, tmp,
- desc->bEndpointAddress & USB_DIR_IN ? "in" : "out", max);
+ usb_endpoint_dir_in(desc) ? "in" : "out", max);

local_irq_restore (flags);
s3c2410_udc_set_halt(_ep, 0);
--
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