From: Arnd Bergmann <a...@arndb.de>
[ Upstream commit b8ae30a7020d61e0504529adf45abb08fa5c59f5 ]
With the new CONFIG_CC_OPTIMIZE_FOR_DEBUGGING option, we get a link
error in the vboxguest driver, when that fails to optimize out the
call to the compat handler:
drivers/virt/vboxguest/vboxguest_core.o: In function `vbg_ioctl_hgcm_call':
vboxguest_core.c:(.text+0x1f6e): undefined reference to `vbg_hgcm_call32'
Another compile-time check documents better what we want and avoids
the error.
Acked-by: Randy Dunlap <rdun...@infradead.org>
Tested-by: Randy Dunlap <rdun...@infradead.org>
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Reviewed-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/virt/vboxguest/vboxguest_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/virt/vboxguest/vboxguest_core.c
b/drivers/virt/vboxguest/vboxguest_core.c
index 3093655c7b92..1475ed5ffcde 100644
--- a/drivers/virt/vboxguest/vboxguest_core.c
+++ b/drivers/virt/vboxguest/vboxguest_core.c
@@ -1312,7 +1312,7 @@ static int vbg_ioctl_hgcm_call(struct vbg_dev *gdev,
return -EINVAL;
}
- if (f32bit)
+ if (IS_ENABLED(CONFIG_COMPAT) && f32bit)
ret = vbg_hgcm_call32(gdev, client_id,
call->function, call->timeout_ms,
VBG_IOCTL_HGCM_CALL_PARMS32(call),
--
2.19.1
