From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: Re: [PATCH] input: touchscreen: ads7846 Remove redundant regulator_disable call Date: Fri, 19 Aug 2016 10:15:04 -0700 Message-ID: <20160819171504.GF20499@dtor-ws> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pf0-f193.google.com ([209.85.192.193]:35635 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753916AbcHSRPH (ORCPT ); Fri, 19 Aug 2016 13:15:07 -0400 Received: by mail-pf0-f193.google.com with SMTP id h186so1737199pfg.2 for ; Fri, 19 Aug 2016 10:15:07 -0700 (PDT) Content-Disposition: inline In-Reply-To: Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Petr Cvek Cc: linux-input@vger.kernel.org On Wed, Aug 17, 2016 at 12:35:17PM +0200, Petr Cvek wrote: > ADS7846 regulator is disabled twice in a row in ads7846_remove(). Valid > one is in ads7846_disable(). > > Removing the ads7846 module causes warning about unbalanced disables. > > ... > WARNING: CPU: 0 PID: 29269 at drivers/regulator/core.c:2251 _regulator_disable+0xf8/0x130 > unbalanced disables for vads7846 > CPU: 0 PID: 29269 Comm: rmmod Tainted: G D W 4.7.0+ #3 > Hardware name: HTC Magician > ... > show_stack+0x10/0x14 > __warn+0xd8/0x100 > warn_slowpath_fmt+0x38/0x48 > _regulator_disable+0xf8/0x130 > regulator_disable+0x34/0x60 > ads7846_remove+0x58/0xd4 [ads7846] > spi_drv_remove+0x1c/0x34 > __device_release_driver+0x84/0x114 > driver_detach+0x8c/0x90 > bus_remove_driver+0x5c/0xc8 > SyS_delete_module+0x1a0/0x238 > ret_fast_syscall+0x0/0x38 > > Signed-off-by: Petr Cvek Applied, thank you. > --- > drivers/input/touchscreen/ads7846.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c > index a61b215..1ce3ecb 100644 > --- a/drivers/input/touchscreen/ads7846.c > +++ b/drivers/input/touchscreen/ads7846.c > @@ -1473,7 +1473,6 @@ static int ads7846_remove(struct spi_device *spi) > > ads784x_hwmon_unregister(spi, ts); > > - regulator_disable(ts->reg); > regulator_put(ts->reg); > > if (!ts->get_pendown_state) { > -- > 2.9.2 > -- Dmitry