usb: gadget: use usb_string_ids_tab instead multiple usb_string_id()

Using usb_string_ids_tab() instead multiple calls of usb_string_id()
seems to be handy. It also allows to add string without many checks.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

11 files changed, 46 insertions, 137 deletions

diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c
index 5db661d8590b..ea349bab7f15 100644
--- a/drivers/usb/gadget/acm_ms.c
+++ b/drivers/usb/gadget/acm_ms.c
@@ -192,17 +192,11 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail1;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail1;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	/* register our configuration */
 	status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index 689d1422a1c0..5702ce3777fb 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -165,17 +165,11 @@ static int __init audio_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		cdev->gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	status = usb_add_config(cdev, &audio_config_driver, audio_do_config);
 	if (status < 0)
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 8e386cf377a5..3b89fe2bd0b8 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -193,17 +193,11 @@ static int __init cdc_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail1;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail1;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	/* register our configuration */
 	status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config);
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 39eb718f796a..004c6ed79e3b 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -345,17 +345,11 @@ static int __init eth_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	/* register our configuration(s); RNDIS first, if it's used */
 	if (has_rndis()) {
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
index 0c70708ef80f..68f8c032ba6b 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -140,25 +140,12 @@ static int __init midi_bind(struct usb_composite_dev *cdev)
 	struct usb_gadget *gadget = cdev->gadget;
 	int gcnum, status;
 
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		return status;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		return status;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
-
-	/* config description */
-	status = usb_string_id(cdev);
-	if (status < 0)
-		return status;
-	strings_dev[STRING_DESCRIPTION_IDX].id = status;
-
-	midi_config.iConfiguration = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
+	midi_config.iConfiguration = strings_dev[STRING_DESCRIPTION_IDX].id;
 
 	gcnum = usb_gadget_controller_number(gadget);
 	if (gcnum < 0) {
diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c
index 4880cdd9de43..1e3f03be94df 100644
--- a/drivers/usb/gadget/hid.c
+++ b/drivers/usb/gadget/hid.c
@@ -176,17 +176,12 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
-	if (status < 0)
-		return status;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
 
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		return status;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	/* register our configuration */
 	status = usb_add_config(cdev, &config_driver, do_config);
diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c
index 69b660b79c09..6c7e15984535 100644
--- a/drivers/usb/gadget/ncm.c
+++ b/drivers/usb/gadget/ncm.c
@@ -180,17 +180,11 @@ static int __init gncm_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-	device_desc.iProduct = status;
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 
 	status = usb_add_config(cdev, &ncm_config_driver,
 				ncm_do_config);
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index 6834c6204df3..b0893136a05d 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -164,26 +164,12 @@ static int __init nokia_bind(struct usb_composite_dev *cdev)
 	if (status < 0)
 		goto err_ether;
 
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto err_usb;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto err_usb;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-
-	device_desc.iProduct = status;
-
-	/* config description */
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto err_usb;
-	strings_dev[STRING_DESCRIPTION_IDX].id = status;
-
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
+	status = strings_dev[STRING_DESCRIPTION_IDX].id;
 	nokia_config_500ma_driver.iConfiguration = status;
 	nokia_config_100ma_driver.iConfiguration = status;
 
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 098c3d03dedd..9962504e14f1 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -175,26 +175,12 @@ static int __init gs_bind(struct usb_composite_dev *cdev)
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
-	status = usb_string_id(cdev);
+	status = usb_string_ids_tab(cdev, strings_dev);
 	if (status < 0)
 		goto fail;
-	strings_dev[STRING_MANUFACTURER_IDX].id = status;
-
-	device_desc.iManufacturer = status;
-
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail;
-	strings_dev[STRING_PRODUCT_IDX].id = status;
-
-	device_desc.iProduct = status;
-
-	/* config description */
-	status = usb_string_id(cdev);
-	if (status < 0)
-		goto fail;
-	strings_dev[STRING_DESCRIPTION_IDX].id = status;
-
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
+	status = strings_dev[STRING_DESCRIPTION_IDX].id;
 	serial_config_driver.iConfiguration = status;
 
 	/* set up other descriptors */
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index 66dfca86b215..d44a4510a65a 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -355,20 +355,15 @@ webcam_bind(struct usb_composite_dev *cdev)
 	/* Allocate string descriptor numbers ... note that string contents
 	 * can be overridden by the composite_dev glue.
 	 */
-	if ((ret = usb_string_id(cdev)) < 0)
+	ret = usb_string_ids_tab(cdev, webcam_strings);
+	if (ret < 0)
 		goto error;
-	webcam_strings[STRING_MANUFACTURER_IDX].id = ret;
-	webcam_device_descriptor.iManufacturer = ret;
-
-	if ((ret = usb_string_id(cdev)) < 0)
-		goto error;
-	webcam_strings[STRING_PRODUCT_IDX].id = ret;
-	webcam_device_descriptor.iProduct = ret;
-
-	if ((ret = usb_string_id(cdev)) < 0)
-		goto error;
-	webcam_strings[STRING_DESCRIPTION_IDX].id = ret;
-	webcam_config_driver.iConfiguration = ret;
+	webcam_device_descriptor.iManufacturer =
+		webcam_strings[STRING_MANUFACTURER_IDX].id;
+	webcam_device_descriptor.iProduct =
+		webcam_strings[STRING_PRODUCT_IDX].id;
+	webcam_config_driver.iConfiguration =
+		webcam_strings[STRING_DESCRIPTION_IDX].id;
 
 	/* Register our configuration. */
 	if ((ret = usb_add_config(cdev, &webcam_config_driver,
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 9a9adee2911a..dbc336e3ba98 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -264,28 +264,18 @@ static int __init zero_bind(struct usb_composite_dev *cdev)
 {
 	int			gcnum;
 	struct usb_gadget	*gadget = cdev->gadget;
-	int			id;
+	int			status;
 
 	/* Allocate string descriptor numbers ... note that string
 	 * contents can be overridden by the composite_dev glue.
 	 */
-	id = usb_string_id(cdev);
-	if (id < 0)
-		return id;
-	strings_dev[STRING_MANUFACTURER_IDX].id = id;
-	device_desc.iManufacturer = id;
-
-	id = usb_string_id(cdev);
-	if (id < 0)
-		return id;
-	strings_dev[STRING_PRODUCT_IDX].id = id;
-	device_desc.iProduct = id;
-
-	id = usb_string_id(cdev);
-	if (id < 0)
-		return id;
-	strings_dev[STRING_SERIAL_IDX].id = id;
-	device_desc.iSerialNumber = id;
+	status = usb_string_ids_tab(cdev, strings_dev);
+	if (status < 0)
+		return status;
+
+	device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
+	device_desc.iSerialNumber = strings_dev[STRING_SERIAL_IDX].id;
 
 	setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev);