The recently-added install target in the linux-core Makefile                                                                                                                                                        
in libdrm's master branch seems wrong.                                                                                                                                                                                              
                                                                                                                                                                                                                    
Currently, it tries to install to $(O)/drivers/char/drm, where                                                                                                                                                      
O is the directory containing the linux source or linux headers                                                                                                                                                     
neccessary for building modules.                                                                                                                                                                                    
                                                                                                                                                                                                                    
So this will put the .ko files into the linux source or headers,                                                                                                                                                    
neither of which should be being scanned by depmod.                                                                                                                                                                 
                                                                                                                                                                                                                    
With the below patch, the linux build system gets to pick where                                                                                                                                                     
it install the modules, and defaults to /lib/modules/kver/extra.                                                                                                                                                    
                                                                                                                                                                                                                    
This location is however scanned before                                                                                                                                                                             
/lib/modules/kver/kernel/drivers/char/drm by depmod, meaning                                                                                                                                                        
that the latter will be prefered. If the new ones to be installed                                                                                                                                                   
are to be preferred, passing INSTALL_MOD_DIR=updates for example                                                                                                                                                    
will install into /lib/modules/kver/updates, taking precedence                                                                                                                                                      
over built-with-the-kernel modules.                                                                                                                                                                                 
                                                                                                                                                                                                                    
And INSTALL_MOD_DIR=kernel/drivers/char/drm will overwrite the                                                                                                                                                      
versions installed with the kernel, which I think was the                                                                                                                                                           
intention of the existing code?                                                                                                                                                                                     
                                                                                                                                                                                                                   
diff --git a/linux-core/Makefile b/linux-core/Makefile
index effc206..bcab6cb 100644
--- a/linux-core/Makefile
+++ b/linux-core/Makefile
@@ -238,8 +238,7 @@ drmstat: drmstat.c
        $(CC) $(PRGCFLAGS) $< -o $@ $(DRMSTATLIBS)
 
 install:
-       echo "Installing DRM modules to "$(O)
-       install *.ko $(O)/driver/char/drm
+       make -C $(LINUXDIR) $(GETCONFIG) SUBDIRS=`pwd` DRMSRCDIR=`pwd` modules_install
        depmod -a
 
 else