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Commit ca157c4a authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
Browse files

USB: fix memory leak in usbtmc 



If an error is returned kfree must also be called.


Signed-off-by: default avatarOliver Neukum <oliver@neukum.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 45e83889

drivers/usb/class/usbtmc.c

+6 −4
Original line number Diff line number Diff line
@@ -751,7 +751,7 @@ static int get_capabilities(struct usbtmc_device_data *data) 
{

	struct device *dev = &data->usb_dev->dev;

	char *buffer;

	int rv;

	int rv = 0;



	buffer = kmalloc(0x18, GFP_KERNEL);

	if (!buffer)
@@ -763,7 +763,7 @@ static int get_capabilities(struct usbtmc_device_data *data) 
			     0, 0, buffer, 0x18, USBTMC_TIMEOUT);

	if (rv < 0) {

		dev_err(dev, "usb_control_msg returned %d\n", rv);

		return rv;

		goto err_out;

	}



	dev_dbg(dev, "GET_CAPABILITIES returned %x\n", buffer[0]);
@@ -773,7 +773,8 @@ static int get_capabilities(struct usbtmc_device_data *data) 
	dev_dbg(dev, "USB488 device capabilities are %x\n", buffer[15]);

	if (buffer[0] != USBTMC_STATUS_SUCCESS) {

		dev_err(dev, "GET_CAPABILITIES returned %x\n", buffer[0]);

		return -EPERM;

		rv = -EPERM;

		goto err_out;

	}



	data->capabilities.interface_capabilities = buffer[4];
@@ -781,8 +782,9 @@ static int get_capabilities(struct usbtmc_device_data *data) 
	data->capabilities.usb488_interface_capabilities = buffer[14];

	data->capabilities.usb488_device_capabilities = buffer[15];



err_out:

	kfree(buffer);

	return 0;

	return rv;

}



#define capability_attribute(name)					\