Hi
I noticed omap2plus_defconfig build is much slower than before and I saw
during build many DVB drivers were compiled. Which made me thinking it
doesn't look right especially there are no changes in
arch/arm/configs/omap2plus_defconfig related to DVB.
I tracked manually last good and first bad
arch/arm/configs/omap2plus_defconfig change.
This was tested by "make ARCH=arm omap2plus_defconfig" and grepping is
CONFIG_DVB_CORE set in .config.
good: 8b136018da7b ("mm: rename CONFIG_PGTABLE_MAPPING to
CONFIG_ZSMALLOC_PGTABLE_MAPPING")
bad: 8aa6361f7251 ("ARM: omap2plus_defconfig: enable twl4030_madc as a
loadable module")
Then I started bisecting which commit adds CONFIG_DVB_CORE and found
commit 8e5b5d75e9d0 ("media: Kconfig: DVB support should be enabled for
Digital TV").
That alone didn't look the answer so bisected then commit adding
MEDIA_DIGITAL_TV_SUPPORT and found c6774ee035dc ("media: Kconfig: make
filtering devices optional").
I'm not familiar with media subsystem but after that commit bunch of
media drivers will get enabled when CONFIG_MEDIA_SUPPORT is set but not
CONFIG_MEDIA_SUPPORT_FILTER.
I don't know is that best to fix in omap2plus_defconfig or
drivers/media/Kconfig. Just thinking if there are other minimal
defconfigs with the same issue?
Jarkko
