diff options
| -rw-r--r-- | drivers/input/input.c | 55 |
1 files changed, 37 insertions, 18 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index fe33ff3..4fe3da3 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -528,40 +528,56 @@ INPUT_DEV_STRING_ATTR_SHOW(name); INPUT_DEV_STRING_ATTR_SHOW(phys); INPUT_DEV_STRING_ATTR_SHOW(uniq); -static int print_modalias_bits(char *buf, char prefix, unsigned long *arr, +static int print_modalias_bits(char *buf, int size, char prefix, unsigned long *arr, unsigned int min, unsigned int max) { int len, i; - len = sprintf(buf, "%c", prefix); + len = snprintf(buf, size, "%c", prefix); for (i = min; i < max; i++) if (arr[LONG(i)] & BIT(i)) - len += sprintf(buf+len, "%X,", i); + len += snprintf(buf + len, size - len, "%X,", i); return len; } -static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf) +static int print_modalias(char *buf, int size, struct input_dev *id) { - struct input_dev *id = to_input_dev(dev); - ssize_t len = 0; + int len; - len += sprintf(buf+len, "input:b%04Xv%04Xp%04Xe%04X-", + len = snprintf(buf, size, "input:b%04Xv%04Xp%04Xe%04X-", id->id.bustype, id->id.vendor, id->id.product, id->id.version); - len += print_modalias_bits(buf+len, 'e', id->evbit, 0, EV_MAX); - len += print_modalias_bits(buf+len, 'k', id->keybit, + len += print_modalias_bits(buf + len, size - len, 'e', id->evbit, + 0, EV_MAX); + len += print_modalias_bits(buf + len, size - len, 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX); - len += print_modalias_bits(buf+len, 'r', id->relbit, 0, REL_MAX); - len += print_modalias_bits(buf+len, 'a', id->absbit, 0, ABS_MAX); - len += print_modalias_bits(buf+len, 'm', id->mscbit, 0, MSC_MAX); - len += print_modalias_bits(buf+len, 'l', id->ledbit, 0, LED_MAX); - len += print_modalias_bits(buf+len, 's', id->sndbit, 0, SND_MAX); - len += print_modalias_bits(buf+len, 'f', id->ffbit, 0, FF_MAX); - len += print_modalias_bits(buf+len, 'w', id->swbit, 0, SW_MAX); - len += sprintf(buf+len, "\n"); + len += print_modalias_bits(buf + len, size - len, 'r', id->relbit, + 0, REL_MAX); + len += print_modalias_bits(buf + len, size - len, 'a', id->absbit, + 0, ABS_MAX); + len += print_modalias_bits(buf + len, size - len, 'm', id->mscbit, + 0, MSC_MAX); + len += print_modalias_bits(buf + len, size - len, 'l', id->ledbit, + 0, LED_MAX); + len += print_modalias_bits(buf + len, size - len, 's', id->sndbit, + 0, SND_MAX); + len += print_modalias_bits(buf + len, size - len, 'f', id->ffbit, + 0, FF_MAX); + len += print_modalias_bits(buf + len, size - len, 'w', id->swbit, + 0, SW_MAX); + return len; +} + +static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf) +{ + struct input_dev *id = to_input_dev(dev); + ssize_t len; + + len = print_modalias(buf, PAGE_SIZE, id); + len += snprintf(buf + len, PAGE_SIZE-len, "\n"); return len; } static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL); @@ -728,8 +744,11 @@ static int input_dev_uevent(struct class_device *cdev, char **envp, if (test_bit(EV_SW, dev->evbit)) INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX); - envp[i] = NULL; + envp[i++] = buffer + len; + len += snprintf(buffer + len, buffer_size - len, "MODALIAS="); + len += print_modalias(buffer + len, buffer_size - len, dev) + 1; + envp[i] = NULL; return 0; } |
