This is a note to let you know that I've just added the patch titled
xen kconfig: don't "select INPUT_XEN_KBDDEV_FRONTEND"
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xen-kconfig-don-t-select-input_xen_kbddev_frontend.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 13aa38e291bdd4e4018f40dd2f75e464814dcbf3 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Tue, 16 Feb 2016 16:03:23 +0100
Subject: xen kconfig: don't "select INPUT_XEN_KBDDEV_FRONTEND"
From: Arnd Bergmann <arnd@xxxxxxxx>
commit 13aa38e291bdd4e4018f40dd2f75e464814dcbf3 upstream.
The Xen framebuffer driver selects the xen keyboard driver, so the latter
will be built-in if XEN_FBDEV_FRONTEND=y. However, when CONFIG_INPUT
is a loadable module, this configuration cannot work. On mainline kernels,
the symbol will be enabled but not used, while in combination with
a patch I have to detect such useless configurations, we get the
expected link failure:
drivers/input/built-in.o: In function `xenkbd_remove':
xen-kbdfront.c:(.text+0x2f0): undefined reference to `input_unregister_device'
xen-kbdfront.c:(.text+0x30e): undefined reference to `input_unregister_device'
This removes the extra "select", as it just causes more trouble than
it helps. In theory, some defconfig file might break if it has
XEN_FBDEV_FRONTEND in it but not INPUT_XEN_KBDDEV_FRONTEND. The Kconfig
fragment we ship in the kernel (kernel/configs/xen.config) however
already enables both, and anyone using an old .config file would
keep having both enabled.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Suggested-by: David Vrabel <david.vrabel@xxxxxxxxxx>
Fixes: 36c1132e34bd ("xen kconfig: fix select INPUT_XEN_KBDDEV_FRONTEND")
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/video/fbdev/Kconfig | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -2249,7 +2249,6 @@ config XEN_FBDEV_FRONTEND
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
- select INPUT_XEN_KBDDEV_FRONTEND if INPUT_MISC
select XEN_XENBUS_FRONTEND
default y
help
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-4.4/xen-kconfig-don-t-select-input_xen_kbddev_frontend.patch
queue-4.4/asm-generic-futex-re-enable-preemption-in-futex_atomic_cmpxchg_inatomic.patch
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