[PATCH/RESEND v14 3/9] usb: Modify existing gadget drivers to use config_ep_by_speed() instead of ep_choose.

Tatyana Brokhman
2011-05-31T13:19:20Z

Remove obsolete functions:
1. ep_choose()
2. usb_find_endpoint()

Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>

---
drivers/usb/gadget/config.c | 25 ------------------
drivers/usb/gadget/f_acm.c | 47 ++++++++++-----------------------
drivers/usb/gadget/f_ecm.c | 45 ++++++++++----------------------
drivers/usb/gadget/f_eem.c | 32 ++++++----------------
drivers/usb/gadget/f_hid.c | 19 ++++---------
drivers/usb/gadget/f_loopback.c | 11 +++++---
drivers/usb/gadget/f_mass_storage.c | 34 +++++++++---------------
drivers/usb/gadget/f_ncm.c | 49 ++++++++++------------------------
drivers/usb/gadget/f_obex.c | 32 ++++++----------------
drivers/usb/gadget/f_phonet.c | 12 ++++----
drivers/usb/gadget/f_rndis.c | 45 +++++++++----------------------
drivers/usb/gadget/f_serial.c | 32 +++++-----------------
drivers/usb/gadget/f_sourcesink.c | 8 ++++-
drivers/usb/gadget/f_subset.c | 29 ++++----------------
include/linux/usb/composite.h | 15 ----------
include/linux/usb/gadget.h | 6 ----
16 files changed, 126 insertions(+), 315 deletions(-)

diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index 09084fd..b2c0013 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -165,28 +165,3 @@ usb_copy_descriptors(struct usb_descriptor_header **src)
return ret;
}

-/**
- * usb_find_endpoint - find a copy of an endpoint descriptor
- * @src: original vector of descriptors
- * @copy: copy of @src
- * @match: endpoint descriptor found in @src
- *
- * This returns the copy of the @match descriptor made for @copy. Its
- * intended use is to help remembering the endpoint descriptor to use
- * when enabling a given endpoint.
- */
-struct usb_endpoint_descriptor *
-usb_find_endpoint(
- struct usb_descriptor_header **src,
- struct usb_descriptor_header **copy,
- struct usb_endpoint_descriptor *match
-)
-{
- while (*src) {
- if (*src == (void *) match)
- return (void *)*copy;
- src++;
- copy++;
- }
- return NULL;
-}
diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c
index d04b4a6..3f88493 100644
--- a/drivers/usb/gadget/f_acm.c
+++ b/drivers/usb/gadget/f_acm.c
@@ -39,12 +39,6 @@
* descriptors (roughly equivalent to CDC Unions) may sometimes help.
*/

-struct acm_ep_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
- struct usb_endpoint_descriptor *notify;
-};
-
struct f_acm {
struct gserial port;
u8 ctrl_id, data_id;
@@ -58,9 +52,6 @@ struct f_acm {
*/
spinlock_t lock;

- struct acm_ep_descs fs;
- struct acm_ep_descs hs;
-
struct usb_ep *notify;
struct usb_request *notify_req;

@@ -404,9 +395,8 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
usb_ep_disable(acm->notify);
} else {
VDBG(cdev, "init acm ctrl interface %d\n", intf);
- acm->notify->desc = ep_choose(cdev->gadget,
- acm->hs.notify,
- acm->fs.notify);
+ if (config_ep_by_speed(cdev->gadget, f, acm->notify))
+ return -EINVAL;
}
usb_ep_enable(acm->notify);
acm->notify->driver_data = acm;
@@ -415,12 +405,17 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (acm->port.in->driver_data) {
DBG(cdev, "reset acm ttyGS%d\n", acm->port_num);
gserial_disconnect(&acm->port);
- } else {
+ }
+ if (!acm->port.in->desc || !acm->port.out->desc) {
DBG(cdev, "activate acm ttyGS%d\n", acm->port_num);
- acm->port.in->desc = ep_choose(cdev->gadget,
- acm->hs.in, acm->fs.in);
- acm->port.out->desc = ep_choose(cdev->gadget,
- acm->hs.out, acm->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ acm->port.in) ||
+ config_ep_by_speed(cdev->gadget, f,
+ acm->port.out)) {
+ acm->port.in->desc = NULL;
+ acm->port.out->desc = NULL;
+ return -EINVAL;
+ }
}
gserial_connect(&acm->port, acm->port_num);

@@ -628,18 +623,11 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
acm->notify_req->complete = acm_cdc_notify_complete;
acm->notify_req->context = acm;

- /* copy descriptors, and track endpoint copies */
+ /* copy descriptors */
f->descriptors = usb_copy_descriptors(acm_fs_function);
if (!f->descriptors)
goto fail;

- acm->fs.in = usb_find_endpoint(acm_fs_function,
- f->descriptors, &acm_fs_in_desc);
- acm->fs.out = usb_find_endpoint(acm_fs_function,
- f->descriptors, &acm_fs_out_desc);
- acm->fs.notify = usb_find_endpoint(acm_fs_function,
- f->descriptors, &acm_fs_notify_desc);
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -652,15 +640,8 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
acm_hs_notify_desc.bEndpointAddress =
acm_fs_notify_desc.bEndpointAddress;

- /* copy descriptors, and track endpoint copies */
+ /* copy descriptors */
f->hs_descriptors = usb_copy_descriptors(acm_hs_function);
-
- acm->hs.in = usb_find_endpoint(acm_hs_function,
- f->hs_descriptors, &acm_hs_in_desc);
- acm->hs.out = usb_find_endpoint(acm_hs_function,
- f->hs_descriptors, &acm_hs_out_desc);
- acm->hs.notify = usb_find_endpoint(acm_hs_function,
- f->hs_descriptors, &acm_hs_notify_desc);
}

DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n",
diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index 7c996f2..ddedbc83 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -46,11 +46,6 @@
* and also means that a get_alt() method is required.
*/

-struct ecm_ep_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
- struct usb_endpoint_descriptor *notify;
-};

enum ecm_notify_state {
ECM_NOTIFY_NONE, /* don't notify */
@@ -64,9 +59,6 @@ struct f_ecm {

char ethaddr[14];

- struct ecm_ep_descs fs;
- struct ecm_ep_descs hs;
-
struct usb_ep *notify;
struct usb_request *notify_req;
u8 notify_state;
@@ -463,11 +455,11 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (ecm->notify->driver_data) {
VDBG(cdev, "reset ecm control %d\n", intf);
usb_ep_disable(ecm->notify);
- } else {
+ }
+ if (!(ecm->notify->desc)) {
VDBG(cdev, "init ecm ctrl %d\n", intf);
- ecm->notify->desc = ep_choose(cdev->gadget,
- ecm->hs.notify,
- ecm->fs.notify);
+ if (config_ep_by_speed(cdev->gadget, f, ecm->notify))
+ goto fail;
}
usb_ep_enable(ecm->notify);
ecm->notify->driver_data = ecm;
@@ -482,12 +474,17 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
gether_disconnect(&ecm->port);
}

- if (!ecm->port.in_ep->desc) {
+ if (!ecm->port.in_ep->desc ||
+ !ecm->port.out_ep->desc) {
DBG(cdev, "init ecm\n");
- ecm->port.in_ep->desc = ep_choose(cdev->gadget,
- ecm->hs.in, ecm->fs.in);
- ecm->port.out_ep->desc = ep_choose(cdev->gadget,
- ecm->hs.out, ecm->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ ecm->port.in_ep) ||
+ config_ep_by_speed(cdev->gadget, f,
+ ecm->port.out_ep)) {
+ ecm->port.in_ep->desc = NULL;
+ ecm->port.out_ep->desc = NULL;
+ goto fail;
+ }
}

/* CDC Ethernet only sends data in non-default altsettings.
@@ -664,13 +661,6 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
if (!f->descriptors)
goto fail;

- ecm->fs.in = usb_find_endpoint(ecm_fs_function,
- f->descriptors, &fs_ecm_in_desc);
- ecm->fs.out = usb_find_endpoint(ecm_fs_function,
- f->descriptors, &fs_ecm_out_desc);
- ecm->fs.notify = usb_find_endpoint(ecm_fs_function,
- f->descriptors, &fs_ecm_notify_desc);
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -687,13 +677,6 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
f->hs_descriptors = usb_copy_descriptors(ecm_hs_function);
if (!f->hs_descriptors)
goto fail;
-
- ecm->hs.in = usb_find_endpoint(ecm_hs_function,
- f->hs_descriptors, &hs_ecm_in_desc);
- ecm->hs.out = usb_find_endpoint(ecm_hs_function,
- f->hs_descriptors, &hs_ecm_out_desc);
- ecm->hs.notify = usb_find_endpoint(ecm_hs_function,
- f->hs_descriptors, &hs_ecm_notify_desc);
}

/* NOTE: all that is done without knowing or caring about
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index fea8e3b..3e41274 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -35,17 +35,9 @@
* Ethernet link.
*/

-struct eem_ep_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
-};
-
struct f_eem {
struct gether port;
u8 ctrl_id;
-
- struct eem_ep_descs fs;
- struct eem_ep_descs hs;
};

static inline struct f_eem *func_to_eem(struct usb_function *f)
@@ -176,12 +168,16 @@ static int eem_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
gether_disconnect(&eem->port);
}

- if (!eem->port.in_ep->desc) {
+ if (!eem->port.in_ep->desc || !eem->port.out_ep->desc) {
DBG(cdev, "init eem\n");
- eem->port.in_ep->desc = ep_choose(cdev->gadget,
- eem->hs.in, eem->fs.in);
- eem->port.out_ep->desc = ep_choose(cdev->gadget,
- eem->hs.out, eem->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ eem->port.in_ep) ||
+ config_ep_by_speed(cdev->gadget, f,
+ eem->port.out_ep)) {
+ eem->port.in_ep->desc = NULL;
+ eem->port.out_ep->desc = NULL;
+ goto fail;
+ }
}

/* zlps should not occur because zero-length EEM packets
@@ -253,11 +249,6 @@ eem_bind(struct usb_configuration *c, struct usb_function *f)
if (!f->descriptors)
goto fail;

- eem->fs.in = usb_find_endpoint(eem_fs_function,
- f->descriptors, &eem_fs_in_desc);
- eem->fs.out = usb_find_endpoint(eem_fs_function,
- f->descriptors, &eem_fs_out_desc);
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -272,11 +263,6 @@ eem_bind(struct usb_configuration *c, struct usb_function *f)
f->hs_descriptors = usb_copy_descriptors(eem_hs_function);
if (!f->hs_descriptors)
goto fail;
-
- eem->hs.in = usb_find_endpoint(eem_hs_function,
- f->hs_descriptors, &eem_hs_in_desc);
- eem->hs.out = usb_find_endpoint(eem_hs_function,
- f->hs_descriptors, &eem_hs_out_desc);
}

DBG(cdev, "CDC Ethernet (EEM): %s speed IN/%s OUT/%s\n",
diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c
index 12879b6..403a48b 100644
--- a/drivers/usb/gadget/f_hid.c
+++ b/drivers/usb/gadget/f_hid.c
@@ -59,8 +59,6 @@ struct f_hidg {
struct cdev cdev;
struct usb_function func;
struct usb_ep *in_ep;
- struct usb_endpoint_descriptor *fs_in_ep_desc;
- struct usb_endpoint_descriptor *hs_in_ep_desc;
};

static inline struct f_hidg *func_to_hidg(struct usb_function *f)
@@ -425,8 +423,12 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (hidg->in_ep->driver_data != NULL)
usb_ep_disable(hidg->in_ep);

- hidg->in_ep->desc = ep_choose(f->config->cdev->gadget,
- hidg->hs_in_ep_desc, hidg->fs_in_ep_desc);
+ status = config_ep_by_speed(f->config->cdev->gadget, f,
+ hidg->in_ep);
+ if (status) {
+ ERROR(cdev, "config_ep_by_speed FAILED!\n");
+ goto fail;
+ }
status = usb_ep_enable(hidg->in_ep);
if (status < 0) {
ERROR(cdev, "Enable endpoint FAILED!\n");
@@ -497,21 +499,12 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f)
if (!f->descriptors)
goto fail;

- hidg->fs_in_ep_desc = usb_find_endpoint(hidg_fs_descriptors,
- f->descriptors,
- &hidg_fs_in_ep_desc);
-
if (gadget_is_dualspeed(c->cdev->gadget)) {
hidg_hs_in_ep_desc.bEndpointAddress =
hidg_fs_in_ep_desc.bEndpointAddress;
f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors);
if (!f->hs_descriptors)
goto fail;
- hidg->hs_in_ep_desc = usb_find_endpoint(hidg_hs_descriptors,
- f->hs_descriptors,
- &hidg_hs_in_ep_desc);
- } else {
- hidg->hs_in_ep_desc = NULL;
}

mutex_init(&hidg->lock);
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c
index 34e3cca..3756326 100644
--- a/drivers/usb/gadget/f_loopback.c
+++ b/drivers/usb/gadget/f_loopback.c
@@ -256,8 +256,9 @@ enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop)

/* one endpoint writes data back IN to the host */
ep = loop->in_ep;
- ep->desc = ep_choose(cdev->gadget,
- &hs_loop_source_desc, &fs_loop_source_desc);
+ result = config_ep_by_speed(cdev->gadget, &(loop->function), ep);
+ if (result)
+ return result;
result = usb_ep_enable(ep);
if (result < 0)
return result;
@@ -265,8 +266,10 @@ enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop)

/* one endpoint just reads OUT packets */
ep = loop->out_ep;
- ep->desc = ep_choose(cdev->gadget,
- &hs_loop_sink_desc, &fs_loop_sink_desc);
+ result = config_ep_by_speed(cdev->gadget, &(loop->function), ep);
+ if (result)
+ goto fail0;
+
result = usb_ep_enable(ep);
if (result < 0) {
fail0:
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 4eee434..5b93395 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2324,19 +2324,6 @@ static int get_next_command(struct fsg_common *common)

/*-------------------------------------------------------------------------*/

-static int enable_endpoint(struct fsg_common *common, struct usb_ep *ep,
- const struct usb_endpoint_descriptor *d)
-{
- int rc;
-
- ep->driver_data = common;
- ep->desc = (struct usb_endpoint_descriptor *)d;
- rc = usb_ep_enable(ep);
- if (rc)
- ERROR(common, "can't enable %s, result %d\n", ep->name, rc);
- return rc;
-}
-
static int alloc_request(struct fsg_common *common, struct usb_ep *ep,
struct usb_request **preq)
{
@@ -2350,7 +2337,6 @@ static int alloc_request(struct fsg_common *common, struct usb_ep *ep,
/* Reset interface setting and re-init endpoint state (toggle etc). */
static int do_set_interface(struct fsg_common *common, struct fsg_dev *new_fsg)
{
- const struct usb_endpoint_descriptor *d;
struct fsg_dev *fsg;
int i, rc = 0;

@@ -2397,20 +2383,26 @@ reset:
fsg = common->fsg;

/* Enable the endpoints */
- d = fsg_ep_desc(common->gadget,
- &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
- rc = enable_endpoint(common, fsg->bulk_in, d);
+ rc = config_ep_by_speed(common->gadget, &(fsg->function), fsg->bulk_in);
+ if (rc)
+ goto reset;
+ rc = usb_ep_enable(fsg->bulk_in);
if (rc)
goto reset;
+ fsg->bulk_in->driver_data = common;
fsg->bulk_in_enabled = 1;

- d = fsg_ep_desc(common->gadget,
- &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
- rc = enable_endpoint(common, fsg->bulk_out, d);
+ rc = config_ep_by_speed(common->gadget, &(fsg->function),
+ fsg->bulk_out);
+ if (rc)
+ goto reset;
+ rc = usb_ep_enable(fsg->bulk_out);
if (rc)
goto reset;
+ fsg->bulk_out->driver_data = common;
fsg->bulk_out_enabled = 1;
- common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
+ common->bulk_out_maxpacket =
+ le16_to_cpu(fsg->bulk_out->desc->wMaxPacketSize);
clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);

/* Allocate the requests */
diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index 06daa1b..ae69ed7 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -48,12 +48,6 @@
#define NCM_NDP_HDR_CRC 0x01000000
#define NCM_NDP_HDR_NOCRC 0x00000000

-struct ncm_ep_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
- struct usb_endpoint_descriptor *notify;
-};
-
enum ncm_notify_state {
NCM_NOTIFY_NONE, /* don't notify */
NCM_NOTIFY_CONNECT, /* issue CONNECT next */
@@ -66,9 +60,6 @@ struct f_ncm {

char ethaddr[14];

- struct ncm_ep_descs fs;
- struct ncm_ep_descs hs;
-
struct usb_ep *notify;
struct usb_request *notify_req;
u8 notify_state;
@@ -801,11 +792,12 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (ncm->notify->driver_data) {
DBG(cdev, "reset ncm control %d\n", intf);
usb_ep_disable(ncm->notify);
- } else {
+ }
+
+ if (!(ncm->notify->desc)) {
DBG(cdev, "init ncm ctrl %d\n", intf);
- ncm->notify->desc = ep_choose(cdev->gadget,
- ncm->hs.notify,
- ncm->fs.notify);
+ if (config_ep_by_speed(cdev->gadget, f, ncm->notify))
+ goto fail;
}
usb_ep_enable(ncm->notify);
ncm->notify->driver_data = ncm;
@@ -828,14 +820,17 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (alt == 1) {
struct net_device *net;

- if (!ncm->port.in_ep->desc) {
+ if (!ncm->port.in_ep->desc ||
+ !ncm->port.out_ep->desc) {
DBG(cdev, "init ncm\n");
- ncm->port.in_ep->desc = ep_choose(cdev->gadget,
- ncm->hs.in,
- ncm->fs.in);
- ncm->port.out_ep->desc = ep_choose(cdev->gadget,
- ncm->hs.out,
- ncm->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ ncm->port.in_ep) ||
+ config_ep_by_speed(cdev->gadget, f,
+ ncm->port.out_ep)) {
+ ncm->port.in_ep->desc = NULL;
+ ncm->port.out_ep->desc = NULL;
+ goto fail;
+ }
}

/* TODO */
@@ -1227,13 +1222,6 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f)
if (!f->descriptors)
goto fail;

- ncm->fs.in = usb_find_endpoint(ncm_fs_function,
- f->descriptors, &fs_ncm_in_desc);
- ncm->fs.out = usb_find_endpoint(ncm_fs_function,
- f->descriptors, &fs_ncm_out_desc);
- ncm->fs.notify = usb_find_endpoint(ncm_fs_function,
- f->descriptors, &fs_ncm_notify_desc);
-
/*
* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
@@ -1251,13 +1239,6 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f)
f->hs_descriptors = usb_copy_descriptors(ncm_hs_function);
if (!f->hs_descriptors)
goto fail;
-
- ncm->hs.in = usb_find_endpoint(ncm_hs_function,
- f->hs_descriptors, &hs_ncm_in_desc);
- ncm->hs.out = usb_find_endpoint(ncm_hs_function,
- f->hs_descriptors, &hs_ncm_out_desc);
- ncm->hs.notify = usb_find_endpoint(ncm_hs_function,
- f->hs_descriptors, &hs_ncm_notify_desc);
}

/*
diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c
index a6dbda09..394502a 100644
--- a/drivers/usb/gadget/f_obex.c
+++ b/drivers/usb/gadget/f_obex.c
@@ -39,20 +39,12 @@
* ready to handle the commands.
*/

-struct obex_ep_descs {
- struct usb_endpoint_descriptor *obex_in;
- struct usb_endpoint_descriptor *obex_out;
-};
-
struct f_obex {
struct gserial port;
u8 ctrl_id;
u8 data_id;
u8 port_num;
u8 can_activate;
-
- struct obex_ep_descs fs;
- struct obex_ep_descs hs;
};

static inline struct f_obex *func_to_obex(struct usb_function *f)
@@ -227,12 +219,16 @@ static int obex_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
gserial_disconnect(&obex->port);
}

- if (!obex->port.in->desc) {
+ if (!obex->port.in->desc || !obex->port.out->desc) {
DBG(cdev, "init obex ttyGS%d\n", obex->port_num);
- obex->port.in->desc = ep_choose(cdev->gadget,
- obex->hs.obex_in, obex->fs.obex_in);
- obex->port.out->desc = ep_choose(cdev->gadget,
- obex->hs.obex_out, obex->fs.obex_out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ obex->port.in) ||
+ config_ep_by_speed(cdev->gadget, f,
+ obex->port.out)) {
+ obex->port.out->desc = NULL;
+ obex->port.in->desc = NULL;
+ goto fail;
+ }
}

if (alt == 1) {
@@ -346,11 +342,6 @@ obex_bind(struct usb_configuration *c, struct usb_function *f)
/* copy descriptors, and track endpoint copies */
f->descriptors = usb_copy_descriptors(fs_function);

- obex->fs.obex_in = usb_find_endpoint(fs_function,
- f->descriptors, &obex_fs_ep_in_desc);
- obex->fs.obex_out = usb_find_endpoint(fs_function,
- f->descriptors, &obex_fs_ep_out_desc);
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -364,11 +355,6 @@ obex_bind(struct usb_configuration *c, struct usb_function *f)

/* copy descriptors, and track endpoint copies */
f->hs_descriptors = usb_copy_descriptors(hs_function);
-
- obex->hs.obex_in = usb_find_endpoint(hs_function,
- f->hs_descriptors, &obex_hs_ep_in_desc);
- obex->hs.obex_out = usb_find_endpoint(hs_function,
- f->hs_descriptors, &obex_hs_ep_out_desc);
}

/* Avoid letting this gadget enumerate until the userspace
diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c
index dc63f16..0d6d260 100644
--- a/drivers/usb/gadget/f_phonet.c
+++ b/drivers/usb/gadget/f_phonet.c
@@ -429,12 +429,12 @@ static int pn_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (alt == 1) {
int i;

- fp->out_ep->desc = ep_choose(gadget,
- &pn_hs_sink_desc,
- &pn_fs_sink_desc);
- fp->in_ep->desc = ep_choose(gadget,
- &pn_hs_source_desc,
- &pn_fs_source_desc);
+ if (config_ep_by_speed(gadget, f, fp->in_ep) ||
+ config_ep_by_speed(gadget, f, fp->out_ep)) {
+ fp->in_ep->desc = NULL;
+ fp->out_ep->desc = NULL;
+ return -EINVAL;
+ }
usb_ep_enable(fp->out_ep);
usb_ep_enable(fp->in_ep);

diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 4646254..b324efa 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -76,21 +76,12 @@
* - MS-Windows drivers sometimes emit undocumented requests.
*/

-struct rndis_ep_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
- struct usb_endpoint_descriptor *notify;
-};
-
struct f_rndis {
struct gether port;
u8 ctrl_id, data_id;
u8 ethaddr[ETH_ALEN];
int config;

- struct rndis_ep_descs fs;
- struct rndis_ep_descs hs;
-
struct usb_ep *notify;
struct usb_request *notify_req;
atomic_t notify_count;
@@ -483,11 +474,11 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (rndis->notify->driver_data) {
VDBG(cdev, "reset rndis control %d\n", intf);
usb_ep_disable(rndis->notify);
- } else {
+ }
+ if (!rndis->notify->desc) {
VDBG(cdev, "init rndis ctrl %d\n", intf);
- rndis->notify->desc = ep_choose(cdev->gadget,
- rndis->hs.notify,
- rndis->fs.notify);
+ if (config_ep_by_speed(cdev->gadget, f, rndis->notify))
+ goto fail;
}
usb_ep_enable(rndis->notify);
rndis->notify->driver_data = rndis;
@@ -500,12 +491,16 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
gether_disconnect(&rndis->port);
}

- if (!rndis->port.in_ep->desc) {
+ if (!rndis->port.in_ep->desc || !rndis->port.out_ep->desc) {
DBG(cdev, "init rndis\n");
- rndis->port.in_ep->desc = ep_choose(cdev->gadget,
- rndis->hs.in, rndis->fs.in);
- rndis->port.out_ep->desc = ep_choose(cdev->gadget,
- rndis->hs.out, rndis->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f,
+ rndis->port.in_ep) ||
+ config_ep_by_speed(cdev->gadget, f,
+ rndis->port.out_ep)) {
+ rndis->port.in_ep->desc = NULL;
+ rndis->port.out_ep->desc = NULL;
+ goto fail;
+ }
}

/* Avoid ZLPs; they can be troublesome. */
@@ -661,13 +656,6 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
if (!f->descriptors)
goto fail;

- rndis->fs.in = usb_find_endpoint(eth_fs_function,
- f->descriptors, &fs_in_desc);
- rndis->fs.out = usb_find_endpoint(eth_fs_function,
- f->descriptors, &fs_out_desc);
- rndis->fs.notify = usb_find_endpoint(eth_fs_function,
- f->descriptors, &fs_notify_desc);
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -685,13 +673,6 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)

if (!f->hs_descriptors)
goto fail;
-
- rndis->hs.in = usb_find_endpoint(eth_hs_function,
- f->hs_descriptors, &hs_in_desc);
- rndis->hs.out = usb_find_endpoint(eth_hs_function,
- f->hs_descriptors, &hs_out_desc);
- rndis->hs.notify = usb_find_endpoint(eth_hs_function,
- f->hs_descriptors, &hs_notify_desc);
}

rndis->port.open = rndis_open;
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c
index a9ce626..91fdf79 100644
--- a/drivers/usb/gadget/f_serial.c
+++ b/drivers/usb/gadget/f_serial.c
@@ -27,18 +27,10 @@
* if you can arrange appropriate host side drivers.
*/

-struct gser_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
-};
-
struct f_gser {
struct gserial port;
u8 data_id;
u8 port_num;
-
- struct gser_descs fs;
- struct gser_descs hs;
};

static inline struct f_gser *func_to_gser(struct usb_function *f)
@@ -136,12 +128,15 @@ static int gser_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (gser->port.in->driver_data) {
DBG(cdev, "reset generic ttyGS%d\n", gser->port_num);
gserial_disconnect(&gser->port);
- } else {
+ }
+ if (!gser->port.in->desc || !gser->port.out->desc) {
DBG(cdev, "activate generic ttyGS%d\n", gser->port_num);
- gser->port.in->desc = ep_choose(cdev->gadget,
- gser->hs.in, gser->fs.in);
- gser->port.out->desc = ep_choose(cdev->gadget,
- gser->hs.out, gser->fs.out);
+ if (!config_ep_by_speed(cdev->gadget, f, gser->port.in) ||
+ !config_ep_by_speed(cdev->gadget, f, gser->port.out)) {
+ gser->port.in->desc = NULL;
+ gser->port.out->desc = NULL;
+ return -EINVAL;
+ }
}
gserial_connect(&gser->port, gser->port_num);
return 0;
@@ -193,12 +188,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
/* copy descriptors, and track endpoint copies */
f->descriptors = usb_copy_descriptors(gser_fs_function);

- gser->fs.in = usb_find_endpoint(gser_fs_function,
- f->descriptors, &gser_fs_in_desc);
- gser->fs.out = usb_find_endpoint(gser_fs_function,
- f->descriptors, &gser_fs_out_desc);
-
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -211,11 +200,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)

/* copy descriptors, and track endpoint copies */
f->hs_descriptors = usb_copy_descriptors(gser_hs_function);
-
- gser->hs.in = usb_find_endpoint(gser_hs_function,
- f->hs_descriptors, &gser_hs_in_desc);
- gser->hs.out = usb_find_endpoint(gser_hs_function,
- f->hs_descriptors, &gser_hs_out_desc);
}

DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n",
diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index 0ffddd3..caf2f95 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -347,7 +347,9 @@ enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss)

/* one endpoint writes (sources) zeroes IN (to the host) */
ep = ss->in_ep;
- ep->desc = ep_choose(cdev->gadget, &hs_source_desc, &fs_source_desc);
+ result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);
+ if (result)
+ return result;
result = usb_ep_enable(ep);
if (result < 0)
return result;
@@ -364,7 +366,9 @@ fail:

/* one endpoint reads (sinks) anything OUT (from the host) */
ep = ss->out_ep;
- ep->desc = ep_choose(cdev->gadget, &hs_sink_desc, &fs_sink_desc);
+ result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);
+ if (result)
+ goto fail;
result = usb_ep_enable(ep);
if (result < 0)
goto fail;
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index aecaed1..93bf676 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -57,18 +57,10 @@
* caring about specific product and vendor IDs.
*/

-struct geth_descs {
- struct usb_endpoint_descriptor *in;
- struct usb_endpoint_descriptor *out;
-};
-
struct f_gether {
struct gether port;

char ethaddr[14];
-
- struct geth_descs fs;
- struct geth_descs hs;
};

static inline struct f_gether *func_to_geth(struct usb_function *f)
@@ -243,10 +235,12 @@ static int geth_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
}

DBG(cdev, "init + activate cdc subset\n");
- geth->port.in_ep->desc = ep_choose(cdev->gadget,
- geth->hs.in, geth->fs.in);
- geth->port.out_ep->desc = ep_choose(cdev->gadget,
- geth->hs.out, geth->fs.out);
+ if (config_ep_by_speed(cdev->gadget, f, geth->port.in_ep) ||
+ config_ep_by_speed(cdev->gadget, f, geth->port.out_ep)) {
+ geth->port.in_ep->desc = NULL;
+ geth->port.out_ep->desc = NULL;
+ return -EINVAL;
+ }

net = gether_connect(&geth->port);
return IS_ERR(net) ? PTR_ERR(net) : 0;
@@ -297,12 +291,6 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)
/* copy descriptors, and track endpoint copies */
f->descriptors = usb_copy_descriptors(fs_eth_function);

- geth->fs.in = usb_find_endpoint(fs_eth_function,
- f->descriptors, &fs_subset_in_desc);
- geth->fs.out = usb_find_endpoint(fs_eth_function,
- f->descriptors, &fs_subset_out_desc);
-
-
/* support all relevant hardware speeds... we expect that when
* hardware is dual speed, all bulk-capable endpoints work at
* both speeds
@@ -315,11 +303,6 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)

/* copy descriptors, and track endpoint copies */
f->hs_descriptors = usb_copy_descriptors(hs_eth_function);
-
- geth->hs.in = usb_find_endpoint(hs_eth_function,
- f->hs_descriptors, &hs_subset_in_desc);
- geth->hs.out = usb_find_endpoint(hs_eth_function,
- f->hs_descriptors, &hs_subset_out_desc);
}

/* NOTE: all that is done without knowing or caring about
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 2014d6b..99830d6 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -148,21 +148,6 @@ int usb_interface_id(struct usb_configuration *, struct usb_function *);
int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f,
struct usb_ep *_ep);

-/**
- * ep_choose - select descriptor endpoint at current device speed
- * @g: gadget, connected and running at some speed
- * @hs: descriptor to use for high speed operation
- * @fs: descriptor to use for full or low speed operation
- */
-static inline struct usb_endpoint_descriptor *
-ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
- struct usb_endpoint_descriptor *fs)
-{
- if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
- return hs;
- return fs;
-}
-
#define MAX_CONFIG_INTERFACES 16 /* arbitrary; max 255 */

/**
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 8015ceb..318c815 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -871,12 +871,6 @@ int usb_gadget_config_buf(const struct usb_config_descriptor *config,
struct usb_descriptor_header **usb_copy_descriptors(
struct usb_descriptor_header **);

-/* return copy of endpoint descriptor given original descriptor set */
-struct usb_endpoint_descriptor *usb_find_endpoint(
- struct usb_descriptor_header **src,
- struct usb_descriptor_header **copy,
- struct usb_endpoint_descriptor *match);
-
/**
* usb_free_descriptors - free descriptors returned by usb_copy_descriptors()
* @v: vector of descriptors
--
1.7.3.3

--
Sent by an employee of the Qualcomm Innovation Center, Inc.