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Wed, 22 Jul 2026 09:15:44 -0700 (PDT) From: kr494167@gmail.com To: lee@kernel.org, pavel@kernel.org Cc: kauschluss@disroot.org, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, Surendra Subject: [PATCH v2 1/2] leds: rgb: s2m: Wire up of_match_table in platform driver Date: Wed, 22 Jul 2026 21:45:18 +0530 Message-ID: <20260722161519.9610-2-kr494167@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260722161519.9610-1-kr494167@gmail.com> References: <20260722161519.9610-1-kr494167@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Surendra The driver defines and registers s2m_rgb_of_match_table via MODULE_DEVICE_TABLE(of, ...) but never assigns it to the platform driver's .of_match_table field. As a result, the kernel never matches this driver against a DT node with compatible "samsung,s2mu005-rgb", making the MODULE_DEVICE_TABLE entry dead code. Wire the table up so that DT-based probing and module auto-loading work as intended. In addition, validate dev->parent in s2m_rgb_probe() to prevent a NULL pointer dereference if probed without parent driver data. Fixes: 63ccd117f425 ("leds: rgb: Add support for Samsung S2M series PMIC RGB LED device") Signed-off-by: Surendra --- drivers/leds/rgb/leds-s2m-rgb.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/leds/rgb/leds-s2m-rgb.c b/drivers/leds/rgb/leds-s2m-rgb.c index d239f54eee90..7ac2b1160c1e 100644 --- a/drivers/leds/rgb/leds-s2m-rgb.c +++ b/drivers/leds/rgb/leds-s2m-rgb.c @@ -363,11 +363,18 @@ static const struct mc_subled s2mu005_rgb_subled_info[] = { static int s2m_rgb_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct sec_pmic_dev *pmic_drvdata = dev_get_drvdata(dev->parent); + struct sec_pmic_dev *pmic_drvdata; struct s2m_rgb *rgb; struct led_init_data init_data = {}; int ret; + if (!dev->parent) + return -ENODEV; + + pmic_drvdata = dev_get_drvdata(dev->parent); + if (!pmic_drvdata) + return -ENODEV; + rgb = devm_kzalloc(dev, sizeof(*rgb), GFP_KERNEL); if (!rgb) return -ENOMEM; @@ -415,6 +422,7 @@ MODULE_DEVICE_TABLE(of, s2m_rgb_of_match_table); static struct platform_driver s2m_rgb_driver = { .driver = { .name = "s2m-rgb", + .of_match_table = s2m_rgb_of_match_table, }, .probe = s2m_rgb_probe, .id_table = s2m_rgb_id_table, -- 2.55.0