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USB: Phidgets should check create_device_file() return value 

device_create_file() could fail, add proper error paths for this condition.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sean Young 2006-08-11 09:28:28 +00:00 committed by Greg Kroah-Hartman
parent 912b24c333
commit da308e8da7
3 changed files with 199 additions and 196 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

238
drivers/usb/misc/phidgetkit.c
View File

@ -193,8 +193,11 @@ static ssize_t lcd_line_##number(struct device *dev, \
struct interfacekit *kit = dev_get_drvdata(dev); \
change_string(kit, buf, number - 1); \
return count; \
} \
static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
}
#define lcd_line_attr(number) \
__ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number)
set_lcd_line(1);
set_lcd_line(2);
@ -232,15 +235,22 @@ exit:
kfree(buffer);
return retval;
}
static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
static struct device_attribute dev_lcd_line_attrs[] = {
lcd_line_attr(1),
lcd_line_attr(2),
__ATTR(backlight, S_IWUGO, NULL, set_backlight)
};
static void remove_lcd_files(struct interfacekit *kit)
{
int i;
if (kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Removing lcd files\n");
device_remove_file(kit->dev, &dev_attr_lcd_line_1);
device_remove_file(kit->dev, &dev_attr_lcd_line_2);
device_remove_file(kit->dev, &dev_attr_backlight);
for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++)
device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
}
}
@ -248,6 +258,7 @@ static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *att
{
struct interfacekit *kit = dev_get_drvdata(dev);
int enable;
int i, rc;
if (kit->ifkit->has_lcd == 0)
return -ENODEV;
@ -258,9 +269,12 @@ static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *att
if (enable) {
if (!kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Adding lcd files\n");
device_create_file(kit->dev, &dev_attr_lcd_line_1);
device_create_file(kit->dev, &dev_attr_lcd_line_2);
device_create_file(kit->dev, &dev_attr_backlight);
for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++) {
rc = device_create_file(kit->dev,
&dev_lcd_line_attrs[i]);
if (rc)
goto out;
}
kit->lcd_files_on = 1;
}
} else {
@ -271,7 +285,13 @@ static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *att
}
return count;
out:
while (i-- > 0)
device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
return rc;
}
static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
@ -403,9 +423,12 @@ static ssize_t show_output##value(struct device *dev, \
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", !!test_bit(value - 1, &kit->outputs));\
} \
static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO, \
show_output##value, set_output##value);
}
#define output_attr(value) \
__ATTR(output##value, S_IWUGO | S_IRUGO, \
show_output##value, set_output##value)
show_set_output(1);
show_set_output(2);
show_set_output(3);
@ -423,14 +446,24 @@ show_set_output(14);
show_set_output(15);
show_set_output(16);
static struct device_attribute dev_output_attrs[] = {
output_attr(1), output_attr(2), output_attr(3), output_attr(4),
output_attr(5), output_attr(6), output_attr(7), output_attr(8),
output_attr(9), output_attr(10), output_attr(11), output_attr(12),
output_attr(13), output_attr(14), output_attr(15), output_attr(16)
};
#define show_input(value) \
static ssize_t show_input##value(struct device *dev, struct device_attribute *attr, char *buf) \
static ssize_t show_input##value(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)kit->inputs[value - 1]); \
} \
static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
}
#define input_attr(value) \
__ATTR(input##value, S_IRUGO, show_input##value, NULL)
show_input(1);
show_input(2);
@ -449,6 +482,13 @@ show_input(14);
show_input(15);
show_input(16);
static struct device_attribute dev_input_attrs[] = {
input_attr(1), input_attr(2), input_attr(3), input_attr(4),
input_attr(5), input_attr(6), input_attr(7), input_attr(8),
input_attr(9), input_attr(10), input_attr(11), input_attr(12),
input_attr(13), input_attr(14), input_attr(15), input_attr(16)
};
#define show_sensor(value) \
static ssize_t show_sensor##value(struct device *dev, \
struct device_attribute *attr, \
@ -457,8 +497,10 @@ static ssize_t show_sensor##value(struct device *dev, \
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)kit->sensors[value - 1]); \
} \
static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
}
#define sensor_attr(value) \
__ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL)
show_sensor(1);
show_sensor(2);
@ -469,6 +511,11 @@ show_sensor(6);
show_sensor(7);
show_sensor(8);
static struct device_attribute dev_sensor_attrs[] = {
sensor_attr(1), sensor_attr(2), sensor_attr(3), sensor_attr(4),
sensor_attr(5), sensor_attr(6), sensor_attr(7), sensor_attr(8)
};
static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
@ -477,7 +524,7 @@ static int interfacekit_probe(struct usb_interface *intf, const struct usb_devic
struct interfacekit *kit;
struct driver_interfacekit *ifkit;
int pipe, maxp, rc = -ENOMEM;
int bit, value;
int bit, value, i;
ifkit = (struct driver_interfacekit *)id->driver_info;
if (!ifkit)
@ -541,74 +588,49 @@ static int interfacekit_probe(struct usb_interface *intf, const struct usb_devic
goto out;
}
if (ifkit->outputs >= 4) {
device_create_file(kit->dev, &dev_attr_output1);
device_create_file(kit->dev, &dev_attr_output2);
device_create_file(kit->dev, &dev_attr_output3);
device_create_file(kit->dev, &dev_attr_output4);
}
if (ifkit->outputs >= 8) {
device_create_file(kit->dev, &dev_attr_output5);
device_create_file(kit->dev, &dev_attr_output6);
device_create_file(kit->dev, &dev_attr_output7);
device_create_file(kit->dev, &dev_attr_output8);
}
if (ifkit->outputs == 16) {
device_create_file(kit->dev, &dev_attr_output9);
device_create_file(kit->dev, &dev_attr_output10);
device_create_file(kit->dev, &dev_attr_output11);
device_create_file(kit->dev, &dev_attr_output12);
device_create_file(kit->dev, &dev_attr_output13);
device_create_file(kit->dev, &dev_attr_output14);
device_create_file(kit->dev, &dev_attr_output15);
device_create_file(kit->dev, &dev_attr_output16);
for (i=0; i<ifkit->outputs; i++ ) {
rc = device_create_file(kit->dev, &dev_output_attrs[i]);
if (rc)
goto out2;
}
if (ifkit->inputs >= 4) {
device_create_file(kit->dev, &dev_attr_input1);
device_create_file(kit->dev, &dev_attr_input2);
device_create_file(kit->dev, &dev_attr_input3);
device_create_file(kit->dev, &dev_attr_input4);
}
if (ifkit->inputs >= 8) {
device_create_file(kit->dev, &dev_attr_input5);
device_create_file(kit->dev, &dev_attr_input6);
device_create_file(kit->dev, &dev_attr_input7);
device_create_file(kit->dev, &dev_attr_input8);
}
if (ifkit->inputs == 16) {
device_create_file(kit->dev, &dev_attr_input9);
device_create_file(kit->dev, &dev_attr_input10);
device_create_file(kit->dev, &dev_attr_input11);
device_create_file(kit->dev, &dev_attr_input12);
device_create_file(kit->dev, &dev_attr_input13);
device_create_file(kit->dev, &dev_attr_input14);
device_create_file(kit->dev, &dev_attr_input15);
device_create_file(kit->dev, &dev_attr_input16);
for (i=0; i<ifkit->inputs; i++ ) {
rc = device_create_file(kit->dev, &dev_input_attrs[i]);
if (rc)
goto out3;
}
if (ifkit->sensors >= 4) {
device_create_file(kit->dev, &dev_attr_sensor1);
device_create_file(kit->dev, &dev_attr_sensor2);
device_create_file(kit->dev, &dev_attr_sensor3);
device_create_file(kit->dev, &dev_attr_sensor4);
for (i=0; i<ifkit->sensors; i++ ) {
rc = device_create_file(kit->dev, &dev_sensor_attrs[i]);
if (rc)
goto out4;
}
if (ifkit->sensors >= 7) {
device_create_file(kit->dev, &dev_attr_sensor5);
device_create_file(kit->dev, &dev_attr_sensor6);
device_create_file(kit->dev, &dev_attr_sensor7);
}
if (ifkit->sensors == 8)
device_create_file(kit->dev, &dev_attr_sensor8);
if (ifkit->has_lcd)
device_create_file(kit->dev, &dev_attr_lcd);
if (ifkit->has_lcd) {
rc = device_create_file(kit->dev, &dev_attr_lcd);
if (rc)
goto out4;
}
dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
ifkit->sensors, ifkit->inputs, ifkit->outputs);
return 0;
out4:
while (i-- > 0)
device_remove_file(kit->dev, &dev_sensor_attrs[i]);
i = ifkit->inputs;
out3:
while (i-- > 0)
device_remove_file(kit->dev, &dev_input_attrs[i]);
i = ifkit->outputs;
out2:
while (i-- > 0)
device_remove_file(kit->dev, &dev_output_attrs[i]);
out:
if (kit) {
if (kit->irq)
@ -629,6 +651,7 @@ out:
static void interfacekit_disconnect(struct usb_interface *interface)
{
struct interfacekit *kit;
int i;
kit = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
@ -641,68 +664,19 @@ static void interfacekit_disconnect(struct usb_interface *interface)
cancel_delayed_work(&kit->do_notify);
if (kit->ifkit->outputs >= 4) {
device_remove_file(kit->dev, &dev_attr_output1);
device_remove_file(kit->dev, &dev_attr_output2);
device_remove_file(kit->dev, &dev_attr_output3);
device_remove_file(kit->dev, &dev_attr_output4);
}
if (kit->ifkit->outputs >= 8) {
device_remove_file(kit->dev, &dev_attr_output5);
device_remove_file(kit->dev, &dev_attr_output6);
device_remove_file(kit->dev, &dev_attr_output7);
device_remove_file(kit->dev, &dev_attr_output8);
}
if (kit->ifkit->outputs == 16) {
device_remove_file(kit->dev, &dev_attr_output9);
device_remove_file(kit->dev, &dev_attr_output10);
device_remove_file(kit->dev, &dev_attr_output11);
device_remove_file(kit->dev, &dev_attr_output12);
device_remove_file(kit->dev, &dev_attr_output13);
device_remove_file(kit->dev, &dev_attr_output14);
device_remove_file(kit->dev, &dev_attr_output15);
device_remove_file(kit->dev, &dev_attr_output16);
}
for (i=0; i<kit->ifkit->outputs; i++)
device_remove_file(kit->dev, &dev_output_attrs[i]);
if (kit->ifkit->inputs >= 4) {
device_remove_file(kit->dev, &dev_attr_input1);
device_remove_file(kit->dev, &dev_attr_input2);
device_remove_file(kit->dev, &dev_attr_input3);
device_remove_file(kit->dev, &dev_attr_input4);
}
if (kit->ifkit->inputs >= 8) {
device_remove_file(kit->dev, &dev_attr_input5);
device_remove_file(kit->dev, &dev_attr_input6);
device_remove_file(kit->dev, &dev_attr_input7);
device_remove_file(kit->dev, &dev_attr_input8);
}
if (kit->ifkit->inputs == 16) {
device_remove_file(kit->dev, &dev_attr_input9);
device_remove_file(kit->dev, &dev_attr_input10);
device_remove_file(kit->dev, &dev_attr_input11);
device_remove_file(kit->dev, &dev_attr_input12);
device_remove_file(kit->dev, &dev_attr_input13);
device_remove_file(kit->dev, &dev_attr_input14);
device_remove_file(kit->dev, &dev_attr_input15);
device_remove_file(kit->dev, &dev_attr_input16);
}
for (i=0; i<kit->ifkit->inputs; i++)
device_remove_file(kit->dev, &dev_input_attrs[i]);
if (kit->ifkit->sensors >= 4) {
device_remove_file(kit->dev, &dev_attr_sensor1);
device_remove_file(kit->dev, &dev_attr_sensor2);
device_remove_file(kit->dev, &dev_attr_sensor3);
device_remove_file(kit->dev, &dev_attr_sensor4);
}
if (kit->ifkit->sensors >= 7) {
device_remove_file(kit->dev, &dev_attr_sensor5);
device_remove_file(kit->dev, &dev_attr_sensor6);
device_remove_file(kit->dev, &dev_attr_sensor7);
}
if (kit->ifkit->sensors == 8)
device_remove_file(kit->dev, &dev_attr_sensor8);
for (i=0; i<kit->ifkit->sensors; i++)
device_remove_file(kit->dev, &dev_sensor_attrs[i]);
if (kit->ifkit->has_lcd)
if (kit->ifkit->has_lcd) {
device_remove_file(kit->dev, &dev_attr_lcd);
remove_lcd_files(kit);
}
device_unregister(kit->dev);

83
drivers/usb/misc/phidgetmotorcontrol.c
View File

@ -215,9 +215,12 @@ static ssize_t show_speed##value(struct device *dev, \
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", mc->speed[value]); \
} \
static DEVICE_ATTR(speed##value, S_IWUGO | S_IRUGO, \
show_speed##value, set_speed##value);
}
#define speed_attr(value) \
__ATTR(speed##value, S_IWUGO | S_IRUGO, \
show_speed##value, set_speed##value)
show_set_speed(0);
show_set_speed(1);
@ -250,9 +253,12 @@ static ssize_t show_acceleration##value(struct device *dev, \
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", mc->acceleration[value]); \
} \
static DEVICE_ATTR(acceleration##value, S_IWUGO | S_IRUGO, \
show_acceleration##value, set_acceleration##value);
}
#define acceleration_attr(value) \
__ATTR(acceleration##value, S_IWUGO | S_IRUGO, \
show_acceleration##value, set_acceleration##value)
show_set_acceleration(0);
show_set_acceleration(1);
@ -264,8 +270,10 @@ static ssize_t show_current##value(struct device *dev, \
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%dmA\n", (int)mc->_current[value]); \
} \
static DEVICE_ATTR(current##value, S_IRUGO, show_current##value, NULL);
}
#define current_attr(value) \
__ATTR(current##value, S_IRUGO, show_current##value, NULL)
show_current(0);
show_current(1);
@ -278,14 +286,29 @@ static ssize_t show_input##value(struct device *dev, \
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)mc->inputs[value]); \
} \
static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
}
#define input_attr(value) \
__ATTR(input##value, S_IRUGO, show_input##value, NULL)
show_input(0);
show_input(1);
show_input(2);
show_input(3);
static struct device_attribute dev_attrs[] = {
input_attr(0),
input_attr(1),
input_attr(2),
input_attr(3),
speed_attr(0),
speed_attr(1),
acceleration_attr(0),
acceleration_attr(1),
current_attr(0),
current_attr(1)
};
static int motorcontrol_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
@ -293,7 +316,7 @@ static int motorcontrol_probe(struct usb_interface *intf, const struct usb_devic
struct usb_endpoint_descriptor *endpoint;
struct motorcontrol *mc;
int pipe, maxp, rc = -ENOMEM;
int bit, value;
int bit, value, i;
interface = intf->cur_altsetting;
if (interface->desc.bNumEndpoints != 1)
@ -355,24 +378,18 @@ static int motorcontrol_probe(struct usb_interface *intf, const struct usb_devic
goto out;
}
device_create_file(mc->dev, &dev_attr_input0);
device_create_file(mc->dev, &dev_attr_input1);
device_create_file(mc->dev, &dev_attr_input2);
device_create_file(mc->dev, &dev_attr_input3);
device_create_file(mc->dev, &dev_attr_speed0);
device_create_file(mc->dev, &dev_attr_speed1);
device_create_file(mc->dev, &dev_attr_acceleration0);
device_create_file(mc->dev, &dev_attr_acceleration1);
device_create_file(mc->dev, &dev_attr_current0);
device_create_file(mc->dev, &dev_attr_current1);
for (i=0; i<ARRAY_SIZE(dev_attrs); i++) {
rc = device_create_file(mc->dev, &dev_attrs[i]);
if (rc)
goto out2;
}
dev_info(&intf->dev, "USB PhidgetMotorControl attached\n");
return 0;
out2:
while (i-- > 0)
device_remove_file(mc->dev, &dev_attrs[i]);
out:
if (mc) {
if (mc->irq)
@ -393,6 +410,7 @@ out:
static void motorcontrol_disconnect(struct usb_interface *interface)
{
struct motorcontrol *mc;
int i;
mc = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
@ -405,19 +423,8 @@ static void motorcontrol_disconnect(struct usb_interface *interface)
cancel_delayed_work(&mc->do_notify);
device_remove_file(mc->dev, &dev_attr_input0);
device_remove_file(mc->dev, &dev_attr_input1);
device_remove_file(mc->dev, &dev_attr_input2);
device_remove_file(mc->dev, &dev_attr_input3);
device_remove_file(mc->dev, &dev_attr_speed0);
device_remove_file(mc->dev, &dev_attr_speed1);
device_remove_file(mc->dev, &dev_attr_acceleration0);
device_remove_file(mc->dev, &dev_attr_acceleration1);
device_remove_file(mc->dev, &dev_attr_current0);
device_remove_file(mc->dev, &dev_attr_current1);
for (i=0; i<ARRAY_SIZE(dev_attrs); i++)
device_remove_file(mc->dev, &dev_attrs[i]);
device_unregister(mc->dev);

74
drivers/usb/misc/phidgetservo.c
View File

@ -1,7 +1,7 @@
/*
* USB PhidgetServo driver 1.0
*
* Copyright (C) 2004 Sean Young <sean@mess.org>
* Copyright (C) 2004, 2006 Sean Young <sean@mess.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -235,86 +235,108 @@ static ssize_t show_servo##value (struct device *dev, \
\
return sprintf(buf, "%d.%02d\n", servo->degrees[value], \
servo->minutes[value]); \
} \
static DEVICE_ATTR(servo##value, S_IWUGO | S_IRUGO, \
show_servo##value, set_servo##value);
}
#define servo_attr(value) \
__ATTR(servo##value, S_IWUGO | S_IRUGO, \
show_servo##value, set_servo##value)
show_set(0);
show_set(1);
show_set(2);
show_set(3);
static struct device_attribute dev_attrs[] = {
servo_attr(0), servo_attr(1), servo_attr(2), servo_attr(3)
};
static int
servo_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct phidget_servo *dev;
int bit, value;
int bit, value, rc;
int servo_count, i;
dev = kzalloc(sizeof (struct phidget_servo), GFP_KERNEL);
if (dev == NULL) {
dev_err(&interface->dev, "%s - out of memory\n", __FUNCTION__);
return -ENOMEM;
rc = -ENOMEM;
goto out;
}
dev->udev = usb_get_dev(udev);
dev->type = id->driver_info;
dev->dev_no = -1;
usb_set_intfdata(interface, dev);
do {
bit = find_first_zero_bit(&device_no, sizeof(device_no));
value = test_and_set_bit(bit, &device_no);
} while(value);
} while (value);
dev->dev_no = bit;
dev->dev = device_create(phidget_class, &dev->udev->dev, 0,
"servo%d", dev->dev_no);
if (IS_ERR(dev->dev)) {
int rc = PTR_ERR(dev->dev);
clear_bit(dev->dev_no, &device_no);
kfree(dev);
return rc;
rc = PTR_ERR(dev->dev);
dev->dev = NULL;
goto out;
}
device_create_file(dev->dev, &dev_attr_servo0);
if (dev->type & SERVO_COUNT_QUAD) {
device_create_file(dev->dev, &dev_attr_servo1);
device_create_file(dev->dev, &dev_attr_servo2);
device_create_file(dev->dev, &dev_attr_servo3);
servo_count = dev->type & SERVO_COUNT_QUAD ? 4 : 1;
for (i=0; i<servo_count; i++) {
rc = device_create_file(dev->dev, &dev_attrs[i]);
if (rc)
goto out2;
}
dev_info(&interface->dev, "USB %d-Motor PhidgetServo v%d.0 attached\n",
dev->type & SERVO_COUNT_QUAD ? 4 : 1,
dev->type & SERVO_VERSION_30 ? 3 : 2);
servo_count, dev->type & SERVO_VERSION_30 ? 3 : 2);
if (!(dev->type & SERVO_VERSION_30))
dev_info(&interface->dev,
"WARNING: v2.0 not tested! Please report if it works.\n");
return 0;
out2:
while (i-- > 0)
device_remove_file(dev->dev, &dev_attrs[i]);
out:
if (dev) {
if (dev->dev)
device_unregister(dev->dev);
if (dev->dev_no >= 0)
clear_bit(dev->dev_no, &device_no);
kfree(dev);
}
return rc;
}
static void
servo_disconnect(struct usb_interface *interface)
{
struct phidget_servo *dev;
int servo_count, i;
dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
device_remove_file(dev->dev, &dev_attr_servo0);
if (dev->type & SERVO_COUNT_QUAD) {
device_remove_file(dev->dev, &dev_attr_servo1);
device_remove_file(dev->dev, &dev_attr_servo2);
device_remove_file(dev->dev, &dev_attr_servo3);
}
if (!dev)
return;
servo_count = dev->type & SERVO_COUNT_QUAD ? 4 : 1;
for (i=0; i<servo_count; i++)
device_remove_file(dev->dev, &dev_attrs[i]);
device_unregister(dev->dev);
usb_put_dev(dev->udev);
dev_info(&interface->dev, "USB %d-Motor PhidgetServo v%d.0 detached\n",
dev->type & SERVO_COUNT_QUAD ? 4 : 1,
dev->type & SERVO_VERSION_30 ? 3 : 2);
servo_count, dev->type & SERVO_VERSION_30 ? 3 : 2);
clear_bit(dev->dev_no, &device_no);
kfree(dev);