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(unknown [120.245.132.192]) by zwqz-smtp-mta-g0-0 (Coremail) with SMTP id _____wBXhbYrlxZkv1DwAQ--.18069S4; Sun, 19 Mar 2023 13:01:55 +0800 (CST) From: Lizhe To: kwankhede@nvidia.com, alex.williamson@redhat.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lizhe Subject: [PATCH v1] vfio/mdev: Remove redundant driver match function Date: Sun, 19 Mar 2023 13:01:30 +0800 Message-Id: <20230319050130.360515-1-sensor1010@163.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CM-TRANSID: _____wBXhbYrlxZkv1DwAQ--.18069S4 X-Coremail-Antispam: 1Uf129KBjvdXoW7Jr1kAr4DtrW7ZF4rXr1kZrb_yoWDtFX_Ca 4UZFZ7Wry5Gr1rtFnaqFWIvr9Fk3WDXrsYqF4Fqasayr1xX3WrZF4qqrsFqw1UZ34rAan8 ur15Xr4IvrWUWjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRNZ2-DUUUUU== X-Originating-IP: [120.245.132.192] X-CM-SenderInfo: 5vhq20jurqiii6rwjhhfrp/xtbBdAg3q1gi5motTgAAs1 X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_VALIDITY_RPBL,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760775163923655343?= X-GMAIL-MSGID: =?utf-8?q?1760775163923655343?= If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches, see driver_match_device(). Drop the bus's match function that always returned 1 and so implements the same behaviour as when there is no match function. Signed-off-by: Lizhe --- drivers/vfio/mdev/mdev_driver.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/vfio/mdev/mdev_driver.c b/drivers/vfio/mdev/mdev_driver.c index 7825d83a55f8..fafa4416aad9 100644 --- a/drivers/vfio/mdev/mdev_driver.c +++ b/drivers/vfio/mdev/mdev_driver.c @@ -31,20 +31,10 @@ static void mdev_remove(struct device *dev) drv->remove(to_mdev_device(dev)); } -static int mdev_match(struct device *dev, struct device_driver *drv) -{ - /* - * No drivers automatically match. Drivers are only bound by explicit - * device_driver_attach() - */ - return 0; -} - struct bus_type mdev_bus_type = { .name = "mdev", .probe = mdev_probe, .remove = mdev_remove, - .match = mdev_match, }; /**