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authorGuido Kiener <guido.kiener@rohde-schwarz.com>2018-09-25 01:30:30 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-28 15:12:08 +0200
commitb690020a498e33c098dd2b5554a7a59fc08b5ca4 (patch)
tree9643a84ee5a05c1f0a6975883b27234d062c0469 /drivers/usb/class
parent100f2cdeadffb3e63121d1d59a60a9882258c415 (diff)
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>
Diffstat (limited to 'drivers/usb/class')
-rw-r--r--drivers/usb/class/usbtmc.c1
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,