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(unknown [120.245.132.192]) by zwqz-smtp-mta-g3-4 (Coremail) with SMTP id _____wCHx69ejRZkU1WuAQ--.31804S4; Sun, 19 Mar 2023 12:20:18 +0800 (CST) From: Lizhe To: akrowiak@linux.ibm.com, pasic@linux.ibm.com, jjherne@linux.ibm.com, freude@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Lizhe Subject: [PATCH v1] s390/vfio-ap-drv: Remove redundant driver match function Date: Sun, 19 Mar 2023 12:19:41 +0800 Message-Id: <20230319041941.259830-1-sensor1010@163.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CM-TRANSID: _____wCHx69ejRZkU1WuAQ--.31804S4 X-Coremail-Antispam: 1Uf129KBjvdXoW7Jr4UtFy8tF15GF4UXr4DXFb_yoWDXrX_C3 y8Xrn7Wr1j9w1fta48XrW7Z3sF9w4kXFZagrsYq3sag3W7Jr1DuFZF9rnrW34jqrW7Aa9x W3yUJr40yr12gjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRKSdyUUUUUU== X-Originating-IP: [120.245.132.192] X-CM-SenderInfo: 5vhq20jurqiii6rwjhhfrp/xtbBogk3q1aEHrmpOgAAsR 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?1760770553846600446?= X-GMAIL-MSGID: =?utf-8?q?1760770553846600446?= If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches, see driver_match_device(). Drop the matrix 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 Reviewed-by: Tony Krowiak --- drivers/s390/crypto/vfio_ap_drv.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c index 997b524bdd2b..9341c000da41 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -59,14 +59,8 @@ static void vfio_ap_matrix_dev_release(struct device *dev) kfree(matrix_dev); } -static int matrix_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static struct bus_type matrix_bus = { .name = "matrix", - .match = &matrix_bus_match, }; static struct device_driver matrix_driver = {