From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Janusz Uzycki <j.uzycki@elproma.com.pl>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Alexandre Courbot <gnurou@gmail.com>,
fabio.estevam@freescale.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org,
Fabio Estevam <festevam@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] gpio: mxs: implement get_direction callback
Date: Sat, 15 Nov 2014 00:26:01 +0100 [thread overview]
Message-ID: <20141114232601.GW27002@pengutronix.de> (raw)
In-Reply-To: <1416004026-9667-1-git-send-email-j.uzycki@elproma.com.pl>
Hello,
On Fri, Nov 14, 2014 at 11:27:06PM +0100, Janusz Uzycki wrote:
> Function gpiod_get_direction() of gpiolib calls get_direction()
> callback. If chip doesn't implement it EINVAL error is returned.
> The function doesn't use for returned value shadowed FLAG_IS_OUT
> bit of gpio_desc.flags field so the callback is required.
This sounds like a bugfix but "required" is wrong as AFAIR this call is
optional and hardly used. Or did that change? The only drawback is that
the debug output for (by Linux) uninitialized gpios is wrong.
Also the grammar of you sentence isn't German enough to sound correct.
Best regards
Uwe
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next prev parent reply other threads:[~2014-11-14 23:26 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 22:27 [PATCH] gpio: mxs: implement get_direction callback Janusz Uzycki
2014-11-14 23:26 ` Uwe Kleine-König [this message]
2014-11-15 19:29 ` Janusz Użycki
2014-11-16 21:42 ` Uwe Kleine-König
2014-11-16 21:48 ` Uwe Kleine-König
2014-11-16 23:59 ` Janusz Użycki
2014-11-17 1:58 ` Janusz Użycki
2014-11-17 8:28 ` Uwe Kleine-König
2014-11-17 8:38 ` Alexander Shiyan
2014-11-17 8:44 ` Uwe Kleine-König
2014-11-17 8:53 ` Alexander Shiyan
2014-11-17 9:11 ` Janusz Użycki
2014-11-17 9:39 ` Uwe Kleine-König
2014-11-17 9:46 ` Richard Genoud
2014-11-17 9:59 ` Uwe Kleine-König
2014-11-17 10:05 ` Richard Genoud
2014-11-17 14:29 ` Janusz Użycki
2014-11-17 16:14 ` Richard Genoud
2014-11-17 15:53 ` Uwe Kleine-König
2014-11-17 15:58 ` Janusz Użycki
2014-11-17 16:02 ` Uwe Kleine-König
2014-11-17 16:04 ` Richard Genoud
2014-11-17 17:26 ` Janusz Użycki
2014-11-17 10:05 ` Alexander Shiyan
2014-11-17 10:09 ` Russell King - ARM Linux
2014-11-17 10:10 ` Richard Genoud
2014-11-17 10:17 ` Russell King - ARM Linux
2014-11-17 12:40 ` Janusz Użycki
2014-11-17 9:51 ` request an irq without enabling? [Was: Re: [PATCH] gpio: mxs: implement get_direction callback] Uwe Kleine-König
2014-11-17 9:57 ` Richard Genoud
2014-11-17 17:00 ` [PATCH] gpio: mxs: implement get_direction callback Janusz Użycki
2014-11-17 17:07 ` Janusz Użycki
2014-11-17 18:42 ` Uwe Kleine-König
2014-11-17 19:02 ` Janusz Użycki
2014-11-17 22:21 ` Uwe Kleine-König
2014-11-18 9:59 ` Janusz Użycki
2014-11-17 9:26 ` Richard Genoud
2014-11-17 14:45 ` Janusz Użycki
2014-11-17 15:59 ` Uwe Kleine-König
2014-11-17 8:31 ` Richard Genoud
2014-11-17 8:39 ` Uwe Kleine-König
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