[ 005/108] USB: ftdi_sio: fix problem when the manufacture is a NULL string
From: Greg KH <gregkh@linuxfoundation.org>
Date: 2012-03-30 23:13:03
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3.0-stable review patch. If anyone has any objections, please let me know. ------------------ 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 <redacted> Tested-by: Wojciech M Zabolotny <redacted> 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@@ -1755,7 +1755,8 @@ 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;