usb: usbtmc: uninitialized symbol 'actual' in usbtmc_read

Fix uninitialized symbol 'actual' in function usbtmc_read.

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: d7604ff0dc01 ("usb: usbtmc: Optimize usbtmc_read")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index dfbcf418dad7..9cb90603f71f 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1370,6 +1370,7 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf,
 
         /* Loop until we have fetched everything we requested */
         remaining = count;
+        actual = 0;
 
         /* Send bulk URB */
         retval = usb_bulk_msg(data->usb_dev,