usb: usbtmc: uninitialized symbol 'actual' in usbtmc_ioctl_clear

Fix uninitialized symbol 'actual' in function usbtmc_ioctl_clear.

When symbol 'actual' is not initialized and usb_bulk_msg() fails,
the subsequent kernel debug message shows a random value.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Fixes: dfee02ac4bce ("usb: usbtmc: Fix ioctl USBTMC_IOCTL_CLEAR")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 9cb90603f71f81ab6b2f30e96ed06cb4cc8c1518..7184fa035434fe0c524b3de52ce7b93cd7854ef2 100644 (file)
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1679,6 +1679,7 @@ usbtmc_clear_check_status:
                do {
                        dev_dbg(dev, "Reading from bulk in EP\n");
 
+                       actual = 0;
                        rv = usb_bulk_msg(data->usb_dev,
                                          usb_rcvbulkpipe(data->usb_dev,
                                                          data->bulk_in),