From: Tzung-Bi Shih <tzungbi@kernel.org>
To: Benson Leung <bleung@chromium.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
chrome-platform@lists.linux.dev, linux-kselftest@vger.kernel.org,
tzungbi@kernel.org,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Simona Vetter <simona.vetter@ffwll.ch>,
Dan Williams <dan.j.williams@intel.com>,
Jason Gunthorpe <jgg@nvidia.com>
Subject: [PATCH v6 3/3] platform/chrome: cros_ec_chardev: Secure cros_ec_device via revocable
Date: Thu, 6 Nov 2025 23:27:12 +0800 [thread overview]
Message-ID: <20251106152712.11850-4-tzungbi@kernel.org> (raw)
In-Reply-To: <20251106152712.11850-1-tzungbi@kernel.org>
Miscdevice now supports revocable fops replacement. Use it to secure
the cros_ec_device is available.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
---
v6:
- Modify the API usage accordingly.
v5: https://lore.kernel.org/chrome-platform/20251016054204.1523139-8-tzungbi@kernel.org
- No primary changes but modify the API usage accordingly.
v4: https://lore.kernel.org/chrome-platform/20250923075302.591026-8-tzungbi@kernel.org
drivers/platform/chrome/cros_ec_chardev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
index c9d80ad5b57e..a7543e1bc07a 100644
--- a/drivers/platform/chrome/cros_ec_chardev.c
+++ b/drivers/platform/chrome/cros_ec_chardev.c
@@ -385,6 +385,7 @@ static int cros_ec_chardev_probe(struct platform_device *pdev)
misc->fops = &chardev_fops;
misc->name = ec_platform->ec_name;
misc->parent = pdev->dev.parent;
+ misc->revocable = true;
dev_set_drvdata(&pdev->dev, misc);
--
2.48.1
prev parent reply other threads:[~2025-11-06 15:27 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-06 15:27 [PATCH v6 0/3] platform/chrome: Fix an UAF via replacing fops Tzung-Bi Shih
2025-11-06 15:27 ` [PATCH v6 1/3] revocable: Add fops replacement Tzung-Bi Shih
2025-11-06 15:47 ` Jason Gunthorpe
2025-11-07 5:07 ` Tzung-Bi Shih
2025-11-07 14:15 ` Jason Gunthorpe
2025-11-10 6:28 ` Tzung-Bi Shih
2025-11-17 15:33 ` Jason Gunthorpe
2025-11-06 17:11 ` kernel test robot
2025-11-07 3:39 ` kernel test robot
2025-11-06 15:27 ` [PATCH v6 2/3] char: misc: Leverage revocable " Tzung-Bi Shih
2025-11-06 15:27 ` Tzung-Bi Shih [this message]
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