[PATCH AUTOSEL 4.19 185/191] usb: usbtmc: uninitialized symbol 'actual' in usbtmc_ioctl_clear

[Sasha Levin]

From: Guido Kiener <guido.kiener@xxxxxxxxxxxxxxxxx>

[ Upstream commit 9a83190300867fb024d53f47c31088e34188efc1 ]

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@xxxxxxxxxxxxxxxxx>
Fixes: dfee02ac4bce ("usb: usbtmc: Fix ioctl USBTMC_IOCTL_CLEAR")
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/usb/class/usbtmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 3ce45c9e9d20d..e6a7c86b70f25 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1016,6 +1016,7 @@ static int usbtmc_ioctl_clear(struct usbtmc_device_data *data)
 		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),
-- 
2.20.1