[PATCH] linux-module/autoload: allow defining multiple modules with custom name

[claudius.heine.ext@siemens.com]

From: Claudius Heine <ch@denx.de>

Currently `AUTOLOAD` only supports binary operation that defines if a
module (with the same name as the recipe) should be loaded or not. This
is very cumbersome to work with if one recipe allows deployment of
multiple modules or if the module name differs from the recipe name.

With this patch `AUTOLOAD` will have a new meaning, it revers to a
bitbake array that contains the module names.

This commit breaks the usage of `AUTOLOAD`. Recipes will need to replace
all their:

    AUTOLOAD = "1"

lines with:

    AUTOLOAD = "${PN}"

And their:

    AUTOLOAD = "0"

lines with:

    AUTOLOAD = ""

in order to migrate to the new interface.

Signed-off-by: Claudius Heine <ch@denx.de>
---
 meta-isar/recipes-kernel/example-module/example-module.bb | 2 +-
 meta/recipes-kernel/linux-module/module.inc               | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/meta-isar/recipes-kernel/example-module/example-module.bb b/meta-isar/recipes-kernel/example-module/example-module.bb
index 6b63ae3..1a4554a 100644
--- a/meta-isar/recipes-kernel/example-module/example-module.bb
+++ b/meta-isar/recipes-kernel/example-module/example-module.bb
@@ -11,7 +11,7 @@ SRC_URI += "file://src"
 
 S = "${WORKDIR}/src"
 
-AUTOLOAD = "1"
+AUTOLOAD = "${PN}"
 
 # Cross-compilation is not supported for the default Debian kernels.
 # For example, package with kernel headers for ARM:
diff --git a/meta/recipes-kernel/linux-module/module.inc b/meta/recipes-kernel/linux-module/module.inc
index 7bc29a8..af7526f 100644
--- a/meta/recipes-kernel/linux-module/module.inc
+++ b/meta/recipes-kernel/linux-module/module.inc
@@ -13,7 +13,7 @@ DEPENDS += "linux-headers-${KERNEL_NAME}"
 
 SRC_URI += "file://debian/"
 
-AUTOLOAD ?= "0"
+AUTOLOAD ?= ""
 
 inherit dpkg
 
@@ -24,7 +24,7 @@ do_prepare_prepend() {
            -e 's/@DESCRIPTION@/${DESCRIPTION}/g' \
         ${S}/debian/changelog ${S}/debian/control
 
-    if [ ${AUTOLOAD} = "1" ]; then
-        echo "echo ${PN} >> /etc/modules" >> ${S}/debian/postinst
-    fi
+    for module in "${AUTOLOAD}"; do
+        echo "echo $module >> /etc/modules" >> ${S}/debian/postinst
+    done
 }
-- 
2.18.0