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usb: usbtmc: uninitialized symbol 'actual' in usbtmc_read

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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: d7604ff0dc ("usb: usbtmc: Optimize usbtmc_read")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guido Kiener 2018-09-25 01:30:30 +02:00 committed by Greg Kroah-Hartman
parent 100f2cdead
commit b690020a49
1 changed files with 1 additions and 0 deletions
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drivers/usb/class/usbtmc.c
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@ -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,