[OpenWrt-Devel] Broken packaging of modules (updating them) when using @lt or @gt

[Yousong Zhou]

On Sat, 15 Dec 2018 at 06:00, Rafał Miłecki <zajec5 at gmail.com> wrote:
>
> I've noticed a problem with kmod-phy-bcm-ns-usb2 defined in the
> target/linux/bcm53xx/modules.mk
>
> Steps to reproduce:
> 1) Setup .config with:
> CONFIG_TARGET_bcm53xx
> CONFIG_TARGET_MULTI_PROFILE
> TARGET_ALL_PROFILES
> CONFIG_TARGET_PER_DEVICE_ROOTFS
> 2) make V=s
> 3) vim build_dir/target-*/linux-*/linux-*/drivers/phy/broadcom/phy-bcm-ns-usb2.c
> 4) make V=s
>
> That will result in rebuilding:
> build_dir/target-*/linux-*/linux-*/drivers/phy/broadcom/phy-bcm-ns-usb2.ko
> (expected).
>
> However it won't update:
> build_dir/target-*/linux-*/target-dir-*/lib/modules/4.14.88/phy-bcm-ns-usb2.ko
>
> I've bisected/notices it's caused by using:
> $(LINUX_DIR)/drivers/phy/phy-bcm-ns-usb2.ko at lt4.13 \
> $(LINUX_DIR)/drivers/phy/broadcom/phy-bcm-ns-usb2.ko at gt4.13
>
> If I drop old kernel compatibility and simply use:
> $(LINUX_DIR)/drivers/phy/broadcom/phy-bcm-ns-usb2.ko
> the problem disappears.

Probably because kmod .ipk was not rebuilt.  How about also applying
version_filter $(FILES) in the following line [1]

    $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))

[1] https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=include/kernel.mk;h=38613756c71d8d5511a72849354bf818f57043ea;hb=HEAD#l262

                yousong

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