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usb: gadget: Move kstrtox() out of lock

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The kstrtox() calls operate on local (to the function) variables and do
not need to be serialized. We may call them out of the lock.

Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120182434.24245-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2023-01-20 20:24:34 +02:00 committed by Greg Kroah-Hartman
parent 065ded319d
commit 6f7fb48d24
1 changed files with 36 additions and 36 deletions
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72
drivers/usb/gadget/configfs.c
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@ -808,15 +808,15 @@ static ssize_t webusb_use_store(struct config_item *item, const char *page,
int ret;
bool use;
mutex_lock(&gi->lock);
ret = kstrtobool(page, &use);
if (!ret) {
gi->use_webusb = use;
ret = len;
}
if (ret)
return ret;
mutex_lock(&gi->lock);
gi->use_webusb = use;
mutex_unlock(&gi->lock);
return ret;
return len;
}
static ssize_t webusb_bcdVersion_show(struct config_item *item, char *page)
@ -832,10 +832,12 @@ static ssize_t webusb_bcdVersion_store(struct config_item *item,
u16 bcdVersion;
int ret;
mutex_lock(&gi->lock);
ret = kstrtou16(page, 0, &bcdVersion);
if (ret)
goto out;
return ret;
mutex_lock(&gi->lock);
ret = is_valid_bcd(bcdVersion);
if (ret)
goto out;
@ -862,15 +864,15 @@ static ssize_t webusb_bVendorCode_store(struct config_item *item,
int ret;
u8 b_vendor_code;
mutex_lock(&gi->lock);
ret = kstrtou8(page, 0, &b_vendor_code);
if (!ret) {
gi->b_webusb_vendor_code = b_vendor_code;
ret = len;
}
if (ret)
return ret;
mutex_lock(&gi->lock);
gi->b_webusb_vendor_code = b_vendor_code;
mutex_unlock(&gi->lock);
return ret;
return len;
}
static ssize_t webusb_landingPage_show(struct config_item *item, char *page)
@ -956,15 +958,15 @@ static ssize_t os_desc_use_store(struct config_item *item, const char *page,
int ret;
bool use;
mutex_lock(&gi->lock);
ret = kstrtobool(page, &use);
if (!ret) {
gi->use_os_desc = use;
ret = len;
}
if (ret)
return ret;
mutex_lock(&gi->lock);
gi->use_os_desc = use;
mutex_unlock(&gi->lock);
return ret;
return len;
}
static ssize_t os_desc_b_vendor_code_show(struct config_item *item, char *page)
@ -980,15 +982,15 @@ static ssize_t os_desc_b_vendor_code_store(struct config_item *item,
int ret;
u8 b_vendor_code;
mutex_lock(&gi->lock);
ret = kstrtou8(page, 0, &b_vendor_code);
if (!ret) {
gi->b_vendor_code = b_vendor_code;
ret = len;
}
if (ret)
return ret;
mutex_lock(&gi->lock);
gi->b_vendor_code = b_vendor_code;
mutex_unlock(&gi->lock);
return ret;
return len;
}
static ssize_t os_desc_qw_sign_show(struct config_item *item, char *page)
@ -1113,15 +1115,15 @@ static ssize_t ext_prop_type_store(struct config_item *item,
u8 type;
int ret;
if (desc->opts_mutex)
mutex_lock(desc->opts_mutex);
ret = kstrtou8(page, 0, &type);
if (ret)
goto end;
if (type < USB_EXT_PROP_UNICODE || type > USB_EXT_PROP_UNICODE_MULTI) {
ret = -EINVAL;
goto end;
}
return ret;
if (type < USB_EXT_PROP_UNICODE || type > USB_EXT_PROP_UNICODE_MULTI)
return -EINVAL;
if (desc->opts_mutex)
mutex_lock(desc->opts_mutex);
if ((ext_prop->type == USB_EXT_PROP_BINARY ||
ext_prop->type == USB_EXT_PROP_LE32 ||
@ -1138,12 +1140,10 @@ static ssize_t ext_prop_type_store(struct config_item *item,
type == USB_EXT_PROP_BE32))
ext_prop->data_len >>= 1;
ext_prop->type = type;
ret = len;
end:
if (desc->opts_mutex)
mutex_unlock(desc->opts_mutex);
return ret;
return len;
}
static ssize_t ext_prop_data_show(struct config_item *item, char *page)