This patch does two things actually:
- It removes the conditional allocation of string ids. This check is not
required because bind is called only once at modprobe time. So we
never can optimize this one away.
- Instead of calling usb_string_id() multiple times I replace it with
one usb_string_ids_tab(). The NULL pointer in struct usb_string with
"" and are not overwritten in fail or unbind case.
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
drivers/usb/gadget/f_acm.c | 29 +++-------
drivers/usb/gadget/f_ecm.c | 47 ++++------------
drivers/usb/gadget/f_eem.c | 16 +++---
drivers/usb/gadget/f_hid.c | 12 ++---
drivers/usb/gadget/f_mass_storage.c | 12 ++---
drivers/usb/gadget/f_midi.c | 10 ++--
drivers/usb/gadget/f_ncm.c | 52 +++++-------------
drivers/usb/gadget/f_obex.c | 25 +++------
drivers/usb/gadget/f_rndis.c | 42 +++++----------
drivers/usb/gadget/f_serial.c | 10 ++--
drivers/usb/gadget/f_subset.c | 29 +++-------
drivers/usb/gadget/f_uac2.c | 100 ++++++-----------------------------
drivers/usb/gadget/f_uvc.c | 30 +++--------
13 files changed, 106 insertions(+), 308 deletions(-)
diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c
index 308242b..38ec5c7 100644
--- a/drivers/usb/gadget/f_acm.c
+++ b/drivers/usb/gadget/f_acm.c
@@ -742,28 +742,13 @@ int acm_bind_config(struct usb_configuration *c, u8
port_num)
*/
/* maybe allocate device-global string IDs, and patch descriptors */
- if (acm_string_defs[ACM_CTRL_IDX].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- acm_string_defs[ACM_CTRL_IDX].id = status;
-
- acm_control_interface_desc.iInterface = status;
-
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- acm_string_defs[ACM_DATA_IDX].id = status;
-
- acm_data_interface_desc.iInterface = status;
-
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- acm_string_defs[ACM_IAD_IDX].id = status;
-
- acm_iad_descriptor.iFunction = status;
- }
+ status = usb_string_ids_tab(c->cdev, acm_string_defs);
+ if (status < 0)
+ return status;
+ acm_control_interface_desc.iInterface =
+ acm_string_defs[ACM_CTRL_IDX].id;
+ acm_data_interface_desc.iInterface = acm_string_defs[ACM_DATA_IDX].id;
+ acm_iad_descriptor.iFunction = acm_string_defs[ACM_IAD_IDX].id;
/* allocate and initialize one new instance */
acm = kzalloc(sizeof *acm, GFP_KERNEL);
diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index 2d3c5a4..1e6ad86 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -354,7 +354,7 @@ static struct usb_descriptor_header *ecm_ss_function[] = {
static struct usb_string ecm_string_defs[] = {
[0].s = "CDC Ethernet Control Model (ECM)",
- [1].s = NULL /* DYNAMIC */,
+ [1].s = "",
[2].s = "CDC Ethernet Data",
[3].s = "CDC ECM",
{ } /* end of list */
@@ -807,8 +807,6 @@ ecm_unbind(struct usb_configuration *c, struct usb_function
*f)
kfree(ecm->notify_req->buf);
usb_ep_free_request(ecm->notify, ecm->notify_req);
-
- ecm_string_defs[1].s = NULL;
kfree(ecm);
}
@@ -833,37 +831,14 @@ ecm_bind_config(struct usb_configuration *c, u8
ethaddr[ETH_ALEN])
if (!can_support_ecm(c->cdev->gadget) || !ethaddr)
return -EINVAL;
- /* maybe allocate device-global string IDs */
- if (ecm_string_defs[0].id == 0) {
-
- /* control interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ecm_string_defs[0].id = status;
- ecm_control_intf.iInterface = status;
-
- /* data interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ecm_string_defs[2].id = status;
- ecm_data_intf.iInterface = status;
-
- /* MAC address */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ecm_string_defs[1].id = status;
- ecm_desc.iMACAddress = status;
-
- /* IAD label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ecm_string_defs[3].id = status;
- ecm_iad_descriptor.iFunction = status;
- }
+ status = usb_string_ids_tab(c->cdev, ecm_string_defs);
+ if (status)
+ return status;
+
+ ecm_control_intf.iInterface = ecm_string_defs[0].id;
+ ecm_data_intf.iInterface = ecm_string_defs[2].id;
+ ecm_desc.iMACAddress = ecm_string_defs[1].id;
+ ecm_iad_descriptor.iFunction = ecm_string_defs[3].id;
/* allocate and initialize one new instance */
ecm = kzalloc(sizeof *ecm, GFP_KERNEL);
@@ -887,9 +862,7 @@ ecm_bind_config(struct usb_configuration *c, u8
ethaddr[ETH_ALEN])
ecm->port.func.disable = ecm_disable;
status = usb_add_function(c, &ecm->port.func);
- if (status) {
- ecm_string_defs[1].s = NULL;
+ if (status)
kfree(ecm);
- }
return status;
}
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index cf0ebee..9f296a2 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -533,16 +533,12 @@ int __init eem_bind_config(struct usb_configuration *c)
struct f_eem *eem;
int status;
- /* maybe allocate device-global string IDs */
- if (eem_string_defs[0].id == 0) {
-
- /* control interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- eem_string_defs[0].id = status;
- eem_intf.iInterface = status;
- }
+ /* control interface label */
+ status = usb_string_id(c->cdev);
+ if (status < 0)
+ return status;
+ eem_string_defs[0].id = status;
+ eem_intf.iInterface = status;
/* allocate and initialize one new instance */
eem = kzalloc(sizeof *eem, GFP_KERNEL);
diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c
index 6e69a8e..edafe5f 100644
--- a/drivers/usb/gadget/f_hid.c
+++ b/drivers/usb/gadget/f_hid.c
@@ -699,13 +699,11 @@ int __init hidg_bind_config(struct usb_configuration *c,
return -ENOENT;
/* maybe allocate device-global string IDs, and patch descriptors */
- if (ct_func_string_defs[CT_FUNC_HID_IDX].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ct_func_string_defs[CT_FUNC_HID_IDX].id = status;
- hidg_interface_desc.iInterface = status;
- }
+ status = usb_string_id(c->cdev);
+ if (status < 0)
+ return status;
+ ct_func_string_defs[CT_FUNC_HID_IDX].id = status;
+ hidg_interface_desc.iInterface = status;
/* allocate and initialize one new instance */
hidg = kzalloc(sizeof *hidg, GFP_KERNEL);
diff --git a/drivers/usb/gadget/f_mass_storage.c
b/drivers/usb/gadget/f_mass_storage.c
index 3433e43..79bf45a 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2686,13 +2686,11 @@ static struct fsg_common *fsg_common_init(struct
fsg_common *common,
common->cdev = cdev;
/* Maybe allocate device-global string IDs, and patch descriptors */
- if (fsg_strings[FSG_STRING_INTERFACE].id == 0) {
- rc = usb_string_id(cdev);
- if (unlikely(rc < 0))
- goto error_release;
- fsg_strings[FSG_STRING_INTERFACE].id = rc;
- fsg_intf_desc.iInterface = rc;
- }
+ rc = usb_string_id(cdev);
+ if (unlikely(rc < 0))
+ goto error_release;
+ fsg_strings[FSG_STRING_INTERFACE].id = rc;
+ fsg_intf_desc.iInterface = rc;
/*
* Create the LUNs, open their backing files, and register the
diff --git a/drivers/usb/gadget/f_midi.c b/drivers/usb/gadget/f_midi.c
index 263e721..20a22f0 100644
--- a/drivers/usb/gadget/f_midi.c
+++ b/drivers/usb/gadget/f_midi.c
@@ -746,12 +746,10 @@ f_midi_bind(struct usb_configuration *c, struct
usb_function *f)
int status, n, jack = 1, i = 0;
/* maybe allocate device-global string ID */
- if (midi_string_defs[0].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- goto fail;
- midi_string_defs[0].id = status;
- }
+ status = usb_string_id(c->cdev);
+ if (status < 0)
+ goto fail;
+ midi_string_defs[0].id = status;
/* We have two interfaces, AudioControl and MIDIStreaming */
status = usb_interface_id(c, f);
diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index 326d7e6..239213d 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -321,7 +321,7 @@ static struct usb_descriptor_header *ncm_hs_function[]
__initdata = {
static struct usb_string ncm_string_defs[] = {
[STRING_CTRL_IDX].s = "CDC Network Control Model (NCM)",
- [STRING_MAC_IDX].s = NULL /* DYNAMIC */,
+ [STRING_MAC_IDX].s = "",
[STRING_DATA_IDX].s = "CDC Network Data",
[STRING_IAD_IDX].s = "CDC NCM",
{ } /* end of list */
@@ -1267,7 +1267,6 @@ ncm_unbind(struct usb_configuration *c, struct
usb_function *f)
kfree(ncm->notify_req->buf);
usb_ep_free_request(ncm->notify, ncm->notify_req);
- ncm_string_defs[1].s = NULL;
kfree(ncm);
}
@@ -1291,38 +1290,17 @@ int __init ncm_bind_config(struct usb_configuration *c,
u8 ethaddr[ETH_ALEN])
if (!can_support_ecm(c->cdev->gadget) || !ethaddr)
return -EINVAL;
- /* maybe allocate device-global string IDs */
- if (ncm_string_defs[0].id == 0) {
-
- /* control interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ncm_string_defs[STRING_CTRL_IDX].id = status;
- ncm_control_intf.iInterface = status;
-
- /* data interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ncm_string_defs[STRING_DATA_IDX].id = status;
- ncm_data_nop_intf.iInterface = status;
- ncm_data_intf.iInterface = status;
-
- /* MAC address */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ncm_string_defs[STRING_MAC_IDX].id = status;
- ecm_desc.iMACAddress = status;
-
- /* IAD */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ncm_string_defs[STRING_IAD_IDX].id = status;
- ncm_iad_desc.iFunction = status;
- }
+ status = usb_string_ids_tab(c->cdev, ncm_string_defs);
+ if (status < 0)
+ return status;
+ ncm_control_intf.iInterface = ncm_string_defs[STRING_CTRL_IDX].id;
+
+ status = ncm_string_defs[STRING_DATA_IDX].id;
+ ncm_data_nop_intf.iInterface = status;
+ ncm_data_intf.iInterface = status;
+
+ ecm_desc.iMACAddress = ncm_string_defs[STRING_MAC_IDX].id;
+ ncm_iad_desc.iFunction = ncm_string_defs[STRING_IAD_IDX].id;
/* allocate and initialize one new instance */
ncm = kzalloc(sizeof *ncm, GFP_KERNEL);
@@ -1331,7 +1309,7 @@ int __init ncm_bind_config(struct usb_configuration *c,
u8 ethaddr[ETH_ALEN])
/* export host's Ethernet address in CDC format */
snprintf(ncm->ethaddr, sizeof ncm->ethaddr, "%pm", ethaddr);
- ncm_string_defs[1].s = ncm->ethaddr;
+ ncm_string_defs[STRING_MAC_IDX].s = ncm->ethaddr;
spin_lock_init(&ncm->lock);
ncm_reset_values(ncm);
@@ -1351,9 +1329,7 @@ int __init ncm_bind_config(struct usb_configuration *c,
u8 ethaddr[ETH_ALEN])
ncm->port.unwrap = ncm_unwrap_ntb;
status = usb_add_function(c, &ncm->port.func);
- if (status) {
- ncm_string_defs[1].s = NULL;
+ if (status)
kfree(ncm);
- }
return status;
}
diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c
index d74491a..9778847 100644
--- a/drivers/usb/gadget/f_obex.c
+++ b/drivers/usb/gadget/f_obex.c
@@ -418,23 +418,14 @@ int __init obex_bind_config(struct usb_configuration *c,
u8 port_num)
if (!can_support_obex(c))
return -EINVAL;
- /* maybe allocate device-global string IDs, and patch descriptors */
- if (obex_string_defs[OBEX_CTRL_IDX].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- obex_string_defs[OBEX_CTRL_IDX].id = status;
-
- obex_control_intf.iInterface = status;
-
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- obex_string_defs[OBEX_DATA_IDX].id = status;
-
- obex_data_nop_intf.iInterface =
- obex_data_intf.iInterface = status;
- }
+ status = usb_string_ids_tab(c->cdev, obex_string_defs);
+ if (status < 0)
+ return status;
+ obex_control_intf.iInterface = obex_string_defs[OBEX_CTRL_IDX].id;
+
+ status = obex_string_defs[OBEX_DATA_IDX].id;
+ obex_data_nop_intf.iInterface = status;
+ obex_data_intf.iInterface = status;
/* allocate and initialize one new instance */
obex = kzalloc(sizeof *obex, GFP_KERNEL);
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index e7c2510..ef89e20 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -795,7 +795,6 @@ rndis_unbind(struct usb_configuration *c, struct
usb_function *f)
rndis_deregister(rndis->config);
rndis_exit();
- rndis_string_defs[0].id = 0;
usb_free_all_descriptors(f);
@@ -822,35 +821,18 @@ rndis_bind_config_vendor(struct usb_configuration *c, u8
ethaddr[ETH_ALEN],
if (!can_support_rndis(c) || !ethaddr)
return -EINVAL;
- /* maybe allocate device-global string IDs */
- if (rndis_string_defs[0].id == 0) {
-
- /* ... and setup RNDIS itself */
- status = rndis_init();
- if (status < 0)
- return status;
-
- /* control interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- rndis_string_defs[0].id = status;
- rndis_control_intf.iInterface = status;
-
- /* data interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- rndis_string_defs[1].id = status;
- rndis_data_intf.iInterface = status;
-
- /* IAD iFunction label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- rndis_string_defs[2].id = status;
- rndis_iad_descriptor.iFunction = status;
- }
+ /* ... and setup RNDIS itself */
+ status = rndis_init();
+ if (status < 0)
+ return status;
+
+ status = usb_string_ids_tab(c->cdev, rndis_string_defs);
+ if (status)
+ return status;
+
+ rndis_control_intf.iInterface = rndis_string_defs[0].id;
+ rndis_data_intf.iInterface = rndis_string_defs[1].id;
+ rndis_iad_descriptor.iFunction = rndis_string_defs[2].id;
/* allocate and initialize one new instance */
status = -ENOMEM;
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c
index 98fa779..a701bb9 100644
--- a/drivers/usb/gadget/f_serial.c
+++ b/drivers/usb/gadget/f_serial.c
@@ -275,12 +275,10 @@ int __init gser_bind_config(struct usb_configuration *c,
u8 port_num)
*/
/* maybe allocate device-global string ID */
- if (gser_string_defs[0].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- gser_string_defs[0].id = status;
- }
+ status = usb_string_id(c->cdev);
+ if (status < 0)
+ return status;
+ gser_string_defs[0].id = status;
/* allocate and initialize one new instance */
gser = kzalloc(sizeof *gser, GFP_KERNEL);
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index 856dbae..f6cd93c 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -236,7 +236,7 @@ static struct usb_descriptor_header *ss_eth_function[] = {
static struct usb_string geth_string_defs[] = {
[0].s = "CDC Ethernet Subset/SAFE",
- [1].s = NULL /* DYNAMIC */,
+ [1].s = "",
{ } /* end of list */
};
@@ -364,7 +364,6 @@ static void
geth_unbind(struct usb_configuration *c, struct usb_function *f)
{
usb_free_all_descriptors(f);
- geth_string_defs[1].s = NULL;
kfree(func_to_geth(f));
}
@@ -388,23 +387,11 @@ int geth_bind_config(struct usb_configuration *c, u8
ethaddr[ETH_ALEN])
if (!ethaddr)
return -EINVAL;
- /* maybe allocate device-global string IDs */
- if (geth_string_defs[0].id == 0) {
-
- /* interface label */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- geth_string_defs[0].id = status;
- subset_data_intf.iInterface = status;
-
- /* MAC address */
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- geth_string_defs[1].id = status;
- ether_desc.iMACAddress = status;
- }
+ status = usb_string_ids_tab(c->cdev, geth_string_defs);
+ if (status < 0)
+ return status;
+ subset_data_intf.iInterface = geth_string_defs[0].id;
+ ether_desc.iMACAddress = geth_string_defs[1].id;
/* allocate and initialize one new instance */
geth = kzalloc(sizeof *geth, GFP_KERNEL);
@@ -425,9 +412,7 @@ int geth_bind_config(struct usb_configuration *c, u8
ethaddr[ETH_ALEN])
geth->port.func.disable = geth_disable;
status = usb_add_function(c, &geth->port.func);
- if (status) {
- geth_string_defs[1].s = NULL;
+ if (status)
kfree(geth);
- }
return status;
}
diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c
index 2840f18..91396a1 100644
--- a/drivers/usb/gadget/f_uac2.c
+++ b/drivers/usb/gadget/f_uac2.c
@@ -1312,7 +1312,7 @@ afunc_setup(struct usb_function *fn, const struct
usb_ctrlrequest *cr)
static int audio_bind_config(struct usb_configuration *cfg)
{
- int id, res;
+ int res;
agdev_g = kzalloc(sizeof *agdev_g, GFP_KERNEL);
if (agdev_g == NULL) {
@@ -1320,89 +1320,21 @@ static int audio_bind_config(struct usb_configuration
*cfg)
return -ENOMEM;
}
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_ASSOC].id = id;
- iad_desc.iFunction = id,
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_IF_CTRL].id = id;
- std_ac_if_desc.iInterface = id,
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_CLKSRC_IN].id = id;
- in_clk_src_desc.iClockSource = id,
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_CLKSRC_OUT].id = id;
- out_clk_src_desc.iClockSource = id,
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_USB_IT].id = id;
- usb_out_it_desc.iTerminal = id,
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_IO_IT].id = id;
- io_in_it_desc.iTerminal = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_USB_OT].id = id;
- usb_in_ot_desc.iTerminal = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_IO_OT].id = id;
- io_out_ot_desc.iTerminal = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_AS_OUT_ALT0].id = id;
- std_as_out_if0_desc.iInterface = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_AS_OUT_ALT1].id = id;
- std_as_out_if1_desc.iInterface = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_AS_IN_ALT0].id = id;
- std_as_in_if0_desc.iInterface = id;
-
- id = usb_string_id(cfg->cdev);
- if (id < 0)
- return id;
-
- strings_fn[STR_AS_IN_ALT1].id = id;
- std_as_in_if1_desc.iInterface = id;
+ res = usb_string_ids_tab(cfg->cdev, strings_fn);
+ if (res)
+ return res;
+ iad_desc.iFunction = strings_fn[STR_ASSOC].id;
+ std_ac_if_desc.iInterface = strings_fn[STR_IF_CTRL].id;
+ in_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_IN].id;
+ out_clk_src_desc.iClockSource = strings_fn[STR_CLKSRC_OUT].id;
+ usb_out_it_desc.iTerminal = strings_fn[STR_USB_IT].id;
+ io_in_it_desc.iTerminal = strings_fn[STR_IO_IT].id;
+ usb_in_ot_desc.iTerminal = strings_fn[STR_USB_OT].id;
+ io_out_ot_desc.iTerminal = strings_fn[STR_IO_OT].id;
+ std_as_out_if0_desc.iInterface = strings_fn[STR_AS_OUT_ALT0].id;
+ std_as_out_if1_desc.iInterface = strings_fn[STR_AS_OUT_ALT1].id;
+ std_as_in_if0_desc.iInterface = strings_fn[STR_AS_IN_ALT0].id;
+ std_as_in_if1_desc.iInterface = strings_fn[STR_AS_IN_ALT1].id;
agdev_g->func.name = "uac2_func";
agdev_g->func.strings = fn_strings;
diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c
index 28ff254..93827ef 100644
--- a/drivers/usb/gadget/f_uvc.c
+++ b/drivers/usb/gadget/f_uvc.c
@@ -798,28 +798,14 @@ uvc_bind_config(struct usb_configuration *c,
uvc->desc.hs_streaming = hs_streaming;
uvc->desc.ss_streaming = ss_streaming;
- /* maybe allocate device-global string IDs, and patch descriptors */
- if (uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id == 0) {
- /* Allocate string descriptor numbers. */
- ret = usb_string_id(c->cdev);
- if (ret < 0)
- goto error;
- uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret;
- uvc_iad.iFunction = ret;
-
- ret = usb_string_id(c->cdev);
- if (ret < 0)
- goto error;
- uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret;
- uvc_control_intf.iInterface = ret;
-
- ret = usb_string_id(c->cdev);
- if (ret < 0)
- goto error;
- uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret;
- uvc_streaming_intf_alt0.iInterface = ret;
- uvc_streaming_intf_alt1.iInterface = ret;
- }
+ /* Allocate string descriptor numbers. */
+ ret = usb_string_ids_tab(c->cdev, uvc_en_us_strings);
+ uvc_iad.iFunction = uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id;
+ uvc_control_intf.iInterface =
+ uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id;
+ ret = uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id;
+ uvc_streaming_intf_alt0.iInterface = ret;
+ uvc_streaming_intf_alt1.iInterface = ret;
/* Register the function. */
uvc->func.name = "uvc";
--
1.7.10.4
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