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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Tylor Yang <tylor_yang@himax.corp-partner.google.com>,
	dmitry.torokhov@gmail.com, robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
	jikos@kernel.org, benjamin.tissoires@redhat.com,
	linux-input@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: poyuan_chang@himax.corp-partner.google.com,
	jingyliang@chromium.org, hbarnor@chromium.org, wuxy23@lenovo.com,
	luolm1@lenovo.com, poyu_hung@himax.corp-partner.google.com
Subject: Re: [PATCH v3 4/4] HID: touchscreen: Add initial support for Himax HID-over-SPI
Date: Tue, 17 Oct 2023 19:03:22 +0200	[thread overview]
Message-ID: <9da94b23-cfcb-4086-a080-7e6e59866d25@linaro.org> (raw)
In-Reply-To: <20231017091900.801989-5-tylor_yang@himax.corp-partner.google.com>

On 17/10/2023 11:19, Tylor Yang wrote:

...

> +
> +#if defined(CONFIG_FB)
> +int fb_notifier_callback(struct notifier_block *self,
> +			 unsigned long event, void *data)
> +{
> +	const struct fb_event *evdata = data;
> +	int *blank;
> +	struct himax_ts_data *ts =
> +	    container_of(self, struct himax_ts_data, fb_notif);
> +
> +	I("entered");
> +
> +	if (!ts) {
> +		E("ts is NULL");
> +		return -ECANCELED;
> +	}

There are so many wrong things with this.... First, tell me, how
container of valid pointer can be NULL?

Second, this is not Linux coding style.


Best regards,
Krzysztof


  parent reply	other threads:[~2023-10-17 17:03 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20231017091900.801989-1-tylor_yang@himax.corp-partner.google.com>
     [not found] ` <20231017091900.801989-2-tylor_yang@himax.corp-partner.google.com>
2023-10-17 13:59   ` [PATCH v3 1/4] dt-bindings: input: Introduce Himax HID-over-SPI device Conor Dooley
2023-10-17 16:58     ` Krzysztof Kozlowski
     [not found] ` <20231017091900.801989-3-tylor_yang@himax.corp-partner.google.com>
2023-10-17 17:01   ` [PATCH v3 2/4] HID: touchscreen: Add initial support for Himax HID-over-SPI Krzysztof Kozlowski
2023-10-18  7:15   ` Benjamin Tissoires
2023-10-18 10:14   ` kernel test robot
2023-10-17 17:08 ` [PATCH v3 0/4] HID: touchscreen: add himax hid-over-spi driver Krzysztof Kozlowski
2023-10-17 21:41   ` Doug Anderson
2023-10-18  6:07     ` Krzysztof Kozlowski
2023-10-18  6:33       ` Benjamin Tissoires
2024-01-18 23:06       ` Dmitry Torokhov
2024-01-22  4:57   ` Tomasz Figa
2024-01-22  8:08     ` Krzysztof Kozlowski
2024-01-22 13:57       ` Tomasz Figa
     [not found] ` <20231017091900.801989-4-tylor_yang@himax.corp-partner.google.com>
2023-10-18  7:23   ` [PATCH v3 3/4] HID: touchscreen: Add initial support for Himax HID-over-SPI Benjamin Tissoires
     [not found] ` <20231017091900.801989-5-tylor_yang@himax.corp-partner.google.com>
2023-10-17 17:03   ` Krzysztof Kozlowski [this message]
2023-10-19  3:51   ` [PATCH v3 4/4] " kernel test robot
2023-10-19  6:47   ` kernel test robot

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