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    SubjectRe: [PATCH] host1x: cdma: use completion instead of semaphore
    On Tue, Dec 11, 2018 at 11:08 AM Thierry Reding
    <thierry.reding@gmail.com> wrote:
    >
    > On Mon, Dec 10, 2018 at 10:51:04PM +0100, Arnd Bergmann wrote:
    > > In this usage, the two are completely equivalent, but the
    > > completion documents better what is going on, and we generally
    > > try to avoid semaphores these days.
    > >
    > > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    > > ---
    > > drivers/gpu/host1x/cdma.c | 6 +++---
    > > drivers/gpu/host1x/cdma.h | 4 ++--
    > > 2 files changed, 5 insertions(+), 5 deletions(-)
    >
    > My understanding is that potentially many userspace processes could be
    > blocking on this, which I think is the reason for it being a semaphore.
    > Is the completion going to work for those cases as well?

    Yes, it behaves the exact same way here.

    Arnd

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