From: Guido Kiener guido.kiener@rohde-schwarz.com
[ 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@rohde-schwarz.com Fixes: dfee02ac4bce ("usb: usbtmc: Fix ioctl USBTMC_IOCTL_CLEAR") Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 @@ 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),