| Date | Fri, 30 Mar 2012 12:48:33 -0700 | From | Greg KH <> | Subject | [ 008/175] USB: ftdi_sio: fix problem when the manufacture is a NULL string |
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3.3-stable review patch. If anyone has any objections, please let me know.
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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 656d2b3964a9d0f9864d472f8dfa2dd7dd42e6c0 upstream.
On some misconfigured ftdi_sio devices, if the manufacturer string is NULL, the kernel will oops when the device is plugged in. This patch fixes the problem.
Reported-by: Wojciech M Zabolotny <W.Zabolotny@elka.pw.edu.pl> Tested-by: Wojciech M Zabolotny <W.Zabolotny@elka.pw.edu.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/serial/ftdi_sio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1763,7 +1763,8 @@ static int ftdi_8u2232c_probe(struct usb dbg("%s", __func__); - if (strcmp(udev->manufacturer, "CALAO Systems") == 0) + if ((udev->manufacturer) && + (strcmp(udev->manufacturer, "CALAO Systems") == 0)) return ftdi_jtag_probe(serial); return 0;
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