lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <1568785811-9577-3-git-send-email-sam.shih@mediatek.com>
Date:   Wed, 18 Sep 2019 13:50:02 +0800
From:   Sam Shih <sam.shih@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thierry Reding <thierry.reding@...il.com>
CC:     Ryder Lee <ryder.lee@...iatek.com>,
        John Crispin <john@...ozen.org>, <linux-pwm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        Sam Shih <sam.shih@...iatek.com>
Subject: [RESEND, PATCH v7 02/11] pwm: mediatek: droping the check for of_device_get_match_data

This patch drop the check for of_device_get_match_data.
Due to the only way call driver probe is compatible match.
The .data pointer which point to the SoC specify data is
directly set by driver, and it should not be NULL in our case.
We can safety remove the check for of_device_get_match_data.

Signed-off-by: Ryder Lee <ryder.lee@...iatek.com>
Signed-off-by: Sam Shih <sam.shih@...iatek.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
Used:
https://patchwork.kernel.org/patch/11096905/
Changes since v6:
Add an Acked-by tag

Changes since v4:
Follow reviewer's comments:
Move the changes of droping the check for of_device_get_match_data
returning non-NULL to this patch

---
 drivers/pwm/pwm-mediatek.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c
index e214f4f57107..ebd62629e3fe 100644
--- a/drivers/pwm/pwm-mediatek.c
+++ b/drivers/pwm/pwm-mediatek.c
@@ -226,7 +226,6 @@ static const struct pwm_ops mtk_pwm_ops = {
 
 static int mtk_pwm_probe(struct platform_device *pdev)
 {
-	const struct mtk_pwm_platform_data *data;
 	struct device_node *np = pdev->dev.of_node;
 	struct mtk_pwm_chip *pc;
 	struct resource *res;
@@ -237,10 +236,7 @@ static int mtk_pwm_probe(struct platform_device *pdev)
 	if (!pc)
 		return -ENOMEM;
 
-	data = of_device_get_match_data(&pdev->dev);
-	if (data == NULL)
-		return -EINVAL;
-	pc->soc = data;
+	pc->soc = of_device_get_match_data(&pdev->dev);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	pc->regs = devm_ioremap_resource(&pdev->dev, res);
-- 
2.17.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ