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Sun, 15 Feb 2026 20:04:56 -0800 (PST) Received: from tux ([2601:7c0:c37c:4c00:e3a8:26f7:7e08:88e1]) by smtp.gmail.com with ESMTPSA id 00721157ae682-797a5caf0e4sm34101517b3.27.2026.02.15.20.04.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Feb 2026 20:04:56 -0800 (PST) From: Ethan Tidmore To: lanzano.alex@gmail.com Cc: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, lumag@kernel.org, mehdi.djait@bootlin.com, u.kleine-koenig@baylibre.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Ethan Tidmore Subject: [PATCH] drm/tiny: sharp-memory: fix pointer error dereference Date: Sun, 15 Feb 2026 22:04:38 -0600 Message-ID: <20260216040438.43702-1-ethantidmore06@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The function devm_drm_dev_alloc() returns a pointer error upon failure not NULL. Change null check to pointer error check. Detected by Smatch: drivers/gpu/drm/tiny/sharp-memory.c:549 sharp_memory_probe() error: 'smd' dereferencing possible ERR_PTR() Fixes: b8f9f21716fec ("drm/tiny: Add driver for Sharp Memory LCD") Signed-off-by: Ethan Tidmore Acked-by: Uwe Kleine-K=C3=B6nig Reviewed-by: Thomas Zimmermann --- drivers/gpu/drm/tiny/sharp-memory.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/tiny/sharp-memory.c b/drivers/gpu/drm/tiny/sha= rp-memory.c index 64272cd0f6e2..cbf69460ebf3 100644 --- a/drivers/gpu/drm/tiny/sharp-memory.c +++ b/drivers/gpu/drm/tiny/sharp-memory.c @@ -541,8 +541,8 @@ static int sharp_memory_probe(struct spi_device *spi) =20 smd =3D devm_drm_dev_alloc(dev, &sharp_memory_drm_driver, struct sharp_memory_device, drm); - if (!smd) - return -ENOMEM; + if (IS_ERR(smd)) + return PTR_ERR(smd); =20 spi_set_drvdata(spi, smd); =20 --=20 2.53.0