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| author | Guido Kiener <guido.kiener@rohde-schwarz.com> | 2018-09-25 01:30:30 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-28 15:12:08 +0200 |
| commit | b690020a498e33c098dd2b5554a7a59fc08b5ca4 (patch) | |
| tree | 9643a84ee5a05c1f0a6975883b27234d062c0469 /drivers | |
| parent | 100f2cdeadffb3e63121d1d59a60a9882258c415 (diff) | |
| download | lwn-b690020a498e33c098dd2b5554a7a59fc08b5ca4.tar.gz lwn-b690020a498e33c098dd2b5554a7a59fc08b5ca4.zip | |
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')
| -rw-r--r-- | drivers/usb/class/usbtmc.c | 1 |
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, |