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kernel: backport GCC 10 usbip build fix for 5.4

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From the original commit message:

"With GCC 10, building usbip triggers error for multiple definition
of 'udev_context', in:
- libsrc/vhci_driver.c:18 and
- libsrc/usbip_host_common.c:27.

Declare as extern the definition in libsrc/usbip_host_common.c."

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
This commit is contained in:
Rui Salvaterra 2021-03-05 12:09:31 +00:00 committed by Petr Štetiar
parent 1b287ed1a3
commit 0eef8402ee
1 changed files with 33 additions and 0 deletions
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33
target/linux/generic/backport-5.4/831-v5.9-usbip-tools-fix-build-error-for-multiple-definition.patch Normal file
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@ -0,0 +1,33 @@
From d5efc2e6b98fe661dbd8dd0d5d5bfb961728e57a Mon Sep 17 00:00:00 2001
From: Antonio Borneo <borneo.antonio@gmail.com>
Date: Thu, 18 Jun 2020 02:08:44 +0200
Subject: usbip: tools: fix build error for multiple definition
With GCC 10, building usbip triggers error for multiple definition
of 'udev_context', in:
- libsrc/vhci_driver.c:18 and
- libsrc/usbip_host_common.c:27.
Declare as extern the definition in libsrc/usbip_host_common.c.
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200618000844.1048309-1-borneo.antonio@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/usb/usbip/libsrc/usbip_host_common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'tools/usb/usbip')
--- a/tools/usb/usbip/libsrc/usbip_host_common.c
+++ b/tools/usb/usbip/libsrc/usbip_host_common.c
@@ -23,7 +23,7 @@
#include "list.h"
#include "sysfs_utils.h"
-struct udev *udev_context;
+extern struct udev *udev_context;
static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
{