Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1662229

Re: [PATCH] gpio: mvebu: fix regmap_update_bits usage

From Gregory CLEMENT <gregory.clement@free-electrons.com>
Newsgroups linux.kernel
Subject Re: [PATCH] gpio: mvebu: fix regmap_update_bits usage
Date 2017-06-09 12:10 +0200
Message-ID <tQp1E-dV-9@gated-at.bofh.it> (permalink)
References <tQp1E-dV-1@gated-at.bofh.it> <tQp1E-dV-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


Hi Thomas,
 
 On ven., juin 09 2017, Thomas Petazzoni <thomas.petazzoni@free-electrons.com> wrote:

> Hello,
>
> On Fri,  9 Jun 2017 12:03:18 +0200, Gregory CLEMENT wrote:
>
>>  	regmap_update_bits(mvchip->regs, GPIO_IO_CONF_OFF,
>> -			   BIT(pin), 1);
>> +			   BIT(pin), BIT(pin));
>>  
>>  	return 0;
>>  }
>> @@ -364,7 +364,7 @@ static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned int pin,
>>  	mvebu_gpio_set(chip, pin, value);
>>  
>>  	regmap_update_bits(mvchip->regs, GPIO_IO_CONF_OFF,
>> -			   BIT(pin), 0);
>> +			   BIT(pin), BIT(pin));
>
> Are you sure here? We want to clear the bit, so I guess the 0 is
> appropriate, no?

argh!

yes it was a mistake

Gregory

>
> Thomas
> -- 
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

[PATCH] gpio: mvebu: fix regmap_update_bits usage Gregory CLEMENT <gregory.clement@free-electrons.com> - 2017-06-09 12:10 +0200
  Re: [PATCH] gpio: mvebu: fix regmap_update_bits usage Gregory CLEMENT <gregory.clement@free-electrons.com> - 2017-06-09 12:10 +0200
  Re: [PATCH] gpio: mvebu: fix regmap_update_bits usage Thomas Petazzoni <thomas.petazzoni@free-electrons.com> - 2017-06-09 12:10 +0200

csiph-web