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Re: is just a wrong function name of libusb_get_port_number? request for
From: |
kraxel |
Subject: |
Re: is just a wrong function name of libusb_get_port_number? request for a review of the bug fix |
Date: |
Fri, 3 Apr 2020 08:50:42 +0200 |
On Thu, Apr 02, 2020 at 11:47:17AM +0000, bauerchen(陈蒙蒙) wrote:
> From 6bfb3087866606ed36a21e7bd05f0674e6a97158 Mon Sep 17 00:00:00 2001
> From: Bauerchen <address@hidden>
> Date: Thu, 2 Apr 2020 19:19:00 +0800
> Subject: [PATCH] Fix:fix the wrong function name of libusb_get_port_number
>
> [desc]:
> libusb_get_port_numbers is called in function
> usb_host_get_port, and qemu crashed with:
> symbol lookup error: undefined symbol: libusb_get_port_numbers
> I check /lib64/libusb-1.0.so.0 and output is libusb_get_port_number, I
> change it to libusb_get_port_number, crash problem is gone;
> so is it just a function name bug?
>
> Signed-off-by: Bauerchen <address@hidden>
> ---
> hw/usb/host-libusb.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
> index 2ac7a93..713db8d 100644
> --- a/hw/usb/host-libusb.c
> +++ b/hw/usb/host-libusb.c
> @@ -285,7 +285,7 @@ static int usb_host_get_port(libusb_device *dev, char
> *port, size_t len)
> int rc, i;
>
> #if LIBUSB_API_VERSION >= 0x01000102
> - rc = libusb_get_port_numbers(dev, path, 7);
> + rc = libusb_get_port_number(dev, path, 7);
Surely not that simple. libusb_get_port_number isn't a drop-in
replacement for libusb_get_port_numbers. Also it was probably added
later to libusb, so some LIBUSB_API_VERSION #ifdef will be needed so the
one or the other will be used depending on the library version.
cheers,
Gerd