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Wed, 22 Jul 2026 09:15:50 -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 2/2] leds: flash: s2m: Wire up of_match_table in platform driver Date: Wed, 22 Jul 2026 21:45:19 +0530 Message-ID: <20260722161519.9610-3-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-kernel@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_fled_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-flash", 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_fled_probe() to prevent a NULL pointer dereference if probed without parent driver data. Fixes: 02149db273a9 ("leds: flash: Add support for Samsung S2M series PMIC flash LED device") Signed-off-by: Surendra --- drivers/leds/flash/leds-s2m-flash.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/leds/flash/leds-s2m-flash.c b/drivers/leds/flash/leds-s2m-flash.c index 6ee8db094611..6097c75b681b 100644 --- a/drivers/leds/flash/leds-s2m-flash.c +++ b/drivers/leds/flash/leds-s2m-flash.c @@ -279,10 +279,17 @@ static int s2mu005_fled_init_channel(struct s2m_led *led, struct device *dev, static int s2m_fled_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct sec_pmic_dev *ddata = dev_get_drvdata(dev->parent); + struct sec_pmic_dev *ddata; struct s2m_led *led; int ret; + if (!dev->parent) + return -ENODEV; + + ddata = dev_get_drvdata(dev->parent); + if (!ddata) + return -ENODEV; + led = devm_kzalloc(dev, sizeof(*led) * MAX_CHANNELS, GFP_KERNEL); if (!led) return -ENOMEM; @@ -339,6 +346,7 @@ MODULE_DEVICE_TABLE(of, s2m_fled_of_match_table); static struct platform_driver s2m_fled_driver = { .driver = { .name = "s2m-flash", + .of_match_table = s2m_fled_of_match_table, }, .probe = s2m_fled_probe, .id_table = s2m_fled_id_table, -- 2.55.0