From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1co3La-000452-IB for barebox@lists.infradead.org; Wed, 15 Mar 2017 07:27:54 +0000 Date: Wed, 15 Mar 2017 08:27:26 +0100 From: Sascha Hauer Message-ID: <20170315072726.hyiabusdgl4jludz@pengutronix.de> References: <20170314093729.27803-1-m.olbrich@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20170314093729.27803-1-m.olbrich@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] efi: clocksoure: make sure the meassured frequency is valid To: Michael Olbrich Cc: barebox@lists.infradead.org On Tue, Mar 14, 2017 at 10:37:29AM +0100, Michael Olbrich wrote: > Some EFI implementations have a even slower tick rate and the meassured > frequency may be zero. > > Signed-off-by: Michael Olbrich > Acked-by: Jean-Christophe PLAGNIOL-VILLARD > --- > drivers/clocksource/efi.c | 4 ++++ > 1 file changed, 4 insertions(+) Applied, thanks Sascha > > diff --git a/drivers/clocksource/efi.c b/drivers/clocksource/efi.c > index 89906c452eb7..fb5b7ca63de9 100644 > --- a/drivers/clocksource/efi.c > +++ b/drivers/clocksource/efi.c > @@ -71,6 +71,10 @@ static int efi_cs_init(struct clocksource *cs) > uint64_t nb_100ns; > > freq = ticks_freq_x86(); > + if (freq == 0) { > + BS->close_event(efi_cs_evt); > + return -ENODEV; > + } > nb_100ns = 10 * 1000 * 1000 / freq; > pr_warn("EFI Event timer too slow freq = %llu Hz\n", freq); > efiret = BS->set_timer(efi_cs_evt, EFI_TIMER_PERIODIC, nb_100ns); > -- > 2.11.0 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox