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Commit 0cbfc826 authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
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staging: comedi: vmk80xx: zero buffers on allocation 



Zero out `devpriv->usb_tx_buf` and `devpriv->usb_rx_buf` on allocation.
When sending data to the USB device, this ensures any unused part of the
buffer will not contain random crap.

Signed-off-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d489082a

drivers/staging/comedi/drivers/vmk80xx.c

+2 −2
Original line number Diff line number Diff line
@@ -994,12 +994,12 @@ static int vmk80xx_alloc_usb_buffers(struct comedi_device *dev) 
	size_t size;



	size = le16_to_cpu(devpriv->ep_rx->wMaxPacketSize);

	devpriv->usb_rx_buf = kmalloc(size, GFP_KERNEL);

	devpriv->usb_rx_buf = kzalloc(size, GFP_KERNEL);

	if (!devpriv->usb_rx_buf)

		return -ENOMEM;



	size = le16_to_cpu(devpriv->ep_tx->wMaxPacketSize);

	devpriv->usb_tx_buf = kmalloc(size, GFP_KERNEL);

	devpriv->usb_tx_buf = kzalloc(size, GFP_KERNEL);

	if (!devpriv->usb_tx_buf) {

		kfree(devpriv->usb_rx_buf);

		return -ENOMEM;