backport kernel commit 59faba1b316a7798a33752b3889193333f8af1a0

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Original patch from Trent Piepho <xyzzy@speakeasy.org>. Its description:

    Fix Kconfig dependency problems wrt boolean menuconfigs

    If one has a dependency chain (tristate)FOO depends on (bool)BAR depends on
    (tristate)BAZ, build problems will result.  If BAZ=m, then BAR can be set
    y, which allows FOO=y.  It's possible to have FOO=y && BAZ=m, which
    wouldn't be allowed if FOO depended directly on BAZ.  In effect, the bool
    promotes the tristate from m to y.

    This ends up causing a problem with several menuconfigs that look like:

    menuconfig BAR
        bool
        depends on BAZ [tristate]
    if BAR
    config FOO
        tristate
    endif

    The solution used here is to add the dependencies of BAR to the if
    statement, so that items in the if block will gain a direct
    non-bool-promoted dependency on BAZ.  This is how it would work if a menu
    was used instead of an if block.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

0 files changed, 0 insertions, 0 deletions