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([1.243.227.27]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3614198f775sm7730486a91.16.2026.04.19.00.19.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Apr 2026 00:20:00 -0700 (PDT) From: Gyeyoung Baek To: Tomeu Vizoso , Boris Brezillon , Rob Herring , Steven Price , =?UTF-8?q?Adri=C3=A1n=20Larumbe?= Cc: Oded Gabbay , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Gyeyoung Baek , stable@vger.kernel.org Subject: [PATCH v1 2/2] drm/panfrost: Fix wait_bo ioctl leaking positive return from dma_resv_wait_timeout() Date: Sun, 19 Apr 2026 16:17:16 +0900 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit dma_resv_wait_timeout() returns a positive 'remaining jiffies' value on success, 0 on timeout, and -errno on failure. panfrost_ioctl_wait_bo() returns this 'long' result from an int-typed ioctl handler, so positive values reach userspace as bogus errors. Explicitly set ret to 0 on the success path. Fixes: f3ba91228e8e ("drm/panfrost: Add initial panfrost driver") Cc: stable@vger.kernel.org Signed-off-by: Gyeyoung Baek --- drivers/gpu/drm/panfrost/panfrost_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index 3d0bdba2a..784e36d72 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -390,6 +390,8 @@ panfrost_ioctl_wait_bo(struct drm_device *dev, void *data, true, timeout); if (!ret) ret = timeout ? -ETIMEDOUT : -EBUSY; + else if (ret > 0) + ret = 0; drm_gem_object_put(gem_obj); -- 2.43.0