From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Wed, 16 Nov 2005 21:41:28 +0000 (-0800)
Subject: [PATCH] USB: allow usb drivers to disable dynamic ids
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ba9dc657af86d05d2971633e57d1f6f94ed60472;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] USB: allow usb drivers to disable dynamic ids

This lets drivers, like the usb-serial ones, disable the ability to add
ids from sysfs.

The usb-serial drivers are "odd" in that they are really usb-serial bus
drivers, not usb bus drivers, so the dynamic id logic will have to go
into the usb-serial bus core for those drivers to get that ability.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 1c0611045379..5e65bc258e1b 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -112,12 +112,26 @@ static int usb_create_newid_file(struct usb_driver *usb_drv)
 {
 	int error = 0;
 
+	if (usb_drv->no_dynamic_id)
+		goto exit;
+
 	if (usb_drv->probe != NULL)
 		error = sysfs_create_file(&usb_drv->driver.kobj,
 					  &driver_attr_new_id.attr);
+exit:
 	return error;
 }
 
+static void usb_remove_newid_file(struct usb_driver *usb_drv)
+{
+	if (usb_drv->no_dynamic_id)
+		return;
+
+	if (usb_drv->probe != NULL)
+		sysfs_remove_file(&usb_drv->driver.kobj,
+				  &driver_attr_new_id.attr);
+}
+
 static void usb_free_dynids(struct usb_driver *usb_drv)
 {
 	struct usb_dynid *dynid, *n;
@@ -135,6 +149,10 @@ static inline int usb_create_newid_file(struct usb_driver *usb_drv)
 	return 0;
 }
 
+static void usb_remove_newid_file(struct usb_driver *usb_drv)
+{
+}
+
 static inline void usb_free_dynids(struct usb_driver *usb_drv)
 {
 }
@@ -447,6 +465,7 @@ void usb_deregister(struct usb_driver *driver)
 	pr_info("%s: deregistering driver %s\n", usbcore_name, driver->name);
 
 	usb_lock_all_devices();
+	usb_remove_newid_file(driver);
 	usb_free_dynids(driver);
 	driver_unregister(&driver->driver);
 	usb_unlock_all_devices();
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c
index 1f29d8837327..2ef9945a6c07 100644
--- a/drivers/usb/serial/airprime.c
+++ b/drivers/usb/serial/airprime.c
@@ -28,6 +28,7 @@ static struct usb_driver airprime_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver airprime_device = {
diff --git a/drivers/usb/serial/anydata.c b/drivers/usb/serial/anydata.c
index 18022a74a3dc..7a171e034b59 100644
--- a/drivers/usb/serial/anydata.c
+++ b/drivers/usb/serial/anydata.c
@@ -32,6 +32,7 @@ static struct usb_driver anydata_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static int anydata_open(struct usb_serial_port *port, struct file *filp)
diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
index 84bc0ee4f061..69039bd9fc5e 100644
--- a/drivers/usb/serial/belkin_sa.c
+++ b/drivers/usb/serial/belkin_sa.c
@@ -118,6 +118,7 @@ static struct usb_driver belkin_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 /* All of the device info needed for the serial converters */
diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c
index c9787001cf2a..813bab37e076 100644
--- a/drivers/usb/serial/cp2101.c
+++ b/drivers/usb/serial/cp2101.c
@@ -72,6 +72,7 @@ static struct usb_driver cp2101_driver = {
 	.probe		= usb_serial_probe,
 	.disconnect	= usb_serial_disconnect,
 	.id_table	= id_table,
+	.no_dynamic_id	= 	1,
 };
 
 static struct usb_serial_driver cp2101_device = {
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index e581e4ae8483..8c10e4004905 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -81,6 +81,7 @@ static struct usb_driver cyberjack_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver cyberjack_device = {
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index af9290ed257b..af18355e94cc 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -112,6 +112,7 @@ static struct usb_driver cypress_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 struct cypress_private {
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index dc74644a603d..c50cec95f49b 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -498,6 +498,7 @@ static struct usb_driver digi_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c
index 0b0546dcc7b9..e5e40064caf2 100644
--- a/drivers/usb/serial/empeg.c
+++ b/drivers/usb/serial/empeg.c
@@ -110,6 +110,7 @@ static struct usb_driver empeg_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver empeg_device = {
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 06e04b442ff1..857fe791d702 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -488,6 +488,7 @@ static struct usb_driver ftdi_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 static char *ftdi_chip_name[] = {
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 35820bda7ae1..198a322286f9 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -227,6 +227,7 @@ static struct usb_driver garmin_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 53a47c31cd0e..c00a440dc421 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -73,6 +73,7 @@ static struct usb_driver generic_driver = {
 	.probe =	generic_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	generic_serial_ids,
+	.no_dynamic_id = 	1,
 };
 #endif
 
diff --git a/drivers/usb/serial/hp4x.c b/drivers/usb/serial/hp4x.c
index 8eadfb705601..e588c3fe632d 100644
--- a/drivers/usb/serial/hp4x.c
+++ b/drivers/usb/serial/hp4x.c
@@ -42,6 +42,7 @@ static struct usb_driver hp49gp_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver hp49gp_device = {
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index dc4c498bd1ed..276bd425a474 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -247,6 +247,7 @@ static struct usb_driver io_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 /* function prototypes for all of our local functions */
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 832b6d6734c0..8b2e4c78abcd 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -221,6 +221,7 @@ static struct usb_driver io_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index d5d066488100..efb568be7015 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -547,6 +547,7 @@ static struct usb_driver ipaq_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	ipaq_id_table,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c
index 7744b8148bc5..64e2cda2a84a 100644
--- a/drivers/usb/serial/ipw.c
+++ b/drivers/usb/serial/ipw.c
@@ -157,6 +157,7 @@ static struct usb_driver usb_ipw_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	usb_ipw_ids,
+	.no_dynamic_id = 	1,
 };
 
 static int debug;
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c
index 19f329e9bdcf..647431c1ccb1 100644
--- a/drivers/usb/serial/ir-usb.c
+++ b/drivers/usb/serial/ir-usb.c
@@ -130,6 +130,7 @@ static struct usb_driver ir_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h
index 5cfc13b5e56f..4e6f626f6062 100644
--- a/drivers/usb/serial/keyspan.h
+++ b/drivers/usb/serial/keyspan.h
@@ -525,6 +525,7 @@ static struct usb_driver keyspan_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	keyspan_ids_combined,
+	.no_dynamic_id = 	1,
 };
 
 /* usb_device_id table for the pre-firmware download keyspan devices */
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index cd4f48bd83b6..0d1f15268549 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -155,6 +155,7 @@ static struct usb_driver keyspan_pda_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_device_id id_table_std [] = {
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index a8951c0fd020..bd68638b7c35 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -121,6 +121,7 @@ static struct usb_driver kl5kusb105d_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver kl5kusb105d_device = {
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 9456dd9dd136..4c853afea385 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -102,6 +102,7 @@ static struct usb_driver kobil_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index ca5dbadb9b7e..b0415e7542c4 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -130,6 +130,7 @@ static struct usb_driver mct_u232_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver mct_u232_device = {
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 3caf97072ac0..b595befb24cf 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -85,6 +85,7 @@ static struct usb_driver omninet_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 7716000045b7..4ee657eaaa0b 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -100,6 +100,7 @@ static struct usb_driver option_driver = {
 	.probe      = usb_serial_probe,
 	.disconnect = usb_serial_disconnect,
 	.id_table   = option_ids,
+	.no_dynamic_id = 	1,
 };
 
 /* The card has three separate interfaces, wich the serial driver
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 41a45a5025b2..e302a320444c 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -87,6 +87,7 @@ static struct usb_driver pl2303_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 #define SET_LINE_REQUEST_TYPE		0x21
diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c
index c22bdc0c4dfd..f8241c152043 100644
--- a/drivers/usb/serial/safe_serial.c
+++ b/drivers/usb/serial/safe_serial.c
@@ -165,6 +165,7 @@ static struct usb_driver safe_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table,
+	.no_dynamic_id = 	1,
 };
 
 static __u16 crc10_table[256] = {
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 205dbf7201da..17a1f09483bd 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -253,6 +253,7 @@ static struct usb_driver ti_usb_driver = {
 	.probe			= usb_serial_probe,
 	.disconnect		= usb_serial_disconnect,
 	.id_table		= ti_id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 static struct usb_serial_driver ti_1port_device = {
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 0c4881d18cd5..2ac37b52485a 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -46,6 +46,7 @@ static struct usb_driver usb_serial_driver = {
 	.name =		"usbserial",
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
+	.no_dynamic_id = 	1,
 };
 
 /* There is no MODULE_DEVICE_TABLE for usbserial.c.  Instead
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index a473c1c34559..2973f5564c06 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -178,6 +178,7 @@ static struct usb_driver visor_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 18c3183be769..19c6386bb692 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -132,6 +132,7 @@ static struct usb_driver whiteheat_driver = {
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
 	.id_table =	id_table_combined,
+	.no_dynamic_id = 	1,
 };
 
 /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 0dd96ef78c13..8d5829936bc4 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -561,6 +561,8 @@ struct usb_dynids {
  * @dynids: used internally to hold the list of dynamically added device
  *	ids for this driver.
  * @driver: the driver model core driver structure.
+ * @no_dynamic_id: if set to 1, the USB core will not allow dynamic ids to be
+ *	added to this driver by preventing the sysfs file from being created.
  *
  * USB drivers must provide a name, probe() and disconnect() methods,
  * and an id_table.  Other driver fields are optional.
@@ -597,6 +599,7 @@ struct usb_driver {
 
 	struct usb_dynids dynids;
 	struct device_driver driver;
+	unsigned int no_dynamic_id:1;
 };
 #define	to_usb_driver(d) container_of(d, struct usb_driver, driver)