From mboxrd@z Thu Jan 1 00:00:00 1970 From: Logan Gunthorpe Subject: [PATCH v5 06/16] tpm-chip: utilize new cdev_device_add helper function Date: Fri, 17 Mar 2017 12:48:13 -0600 Message-ID: <1489776503-3151-7-git-send-email-logang@deltatee.com> References: <1489776503-3151-1-git-send-email-logang@deltatee.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1489776503-3151-1-git-send-email-logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org Sender: "Linux-nvdimm" To: Greg Kroah-Hartman , Dan Williams , Hans Verkuil , Alexander Viro , Alexandre Belloni , Jason Gunthorpe , Johannes Thumshirn , Dmitry Torokhov , Linus Walleij , Jarkko Sakkinen , "James E.J. Bottomley" , "Martin K. Petersen" , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Cyrille Pitchen Cc: linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, rtc-linux-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-input@vger.kernel.org Replace the open coded registration of the cdev and dev with the new device_add_cdev() helper. The helper replaces a common pattern by taking the proper reference against the parent device and adding both the cdev and the device. Signed-off-by: Logan Gunthorpe Reviewed-by: Jason Gunthorpe Reviewed-by: Jarkko Sakkinen --- drivers/char/tpm/tpm-chip.c | 19 +++---------------- 1 file changed, 3 insertions(+), 16 deletions(-) diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c index c406343..935f0e9 100644 --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -187,7 +187,6 @@ struct tpm_chip *tpm_chip_alloc(struct device *pdev, cdev_init(&chip->cdev, &tpm_fops); chip->cdev.owner = THIS_MODULE; - chip->cdev.kobj.parent = &chip->dev.kobj; return chip; @@ -230,27 +229,16 @@ static int tpm_add_char_device(struct tpm_chip *chip) { int rc; - rc = cdev_add(&chip->cdev, chip->dev.devt, 1); + rc = cdev_device_add(&chip->cdev, &chip->dev); if (rc) { dev_err(&chip->dev, - "unable to cdev_add() %s, major %d, minor %d, err=%d\n", + "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n", dev_name(&chip->dev), MAJOR(chip->dev.devt), MINOR(chip->dev.devt), rc); return rc; } - rc = device_add(&chip->dev); - if (rc) { - dev_err(&chip->dev, - "unable to device_register() %s, major %d, minor %d, err=%d\n", - dev_name(&chip->dev), MAJOR(chip->dev.devt), - MINOR(chip->dev.devt), rc); - - cdev_del(&chip->cdev); - return rc; - } - /* Make the chip available. */ mutex_lock(&idr_lock); idr_replace(&dev_nums_idr, chip, chip->dev_num); @@ -261,8 +249,7 @@ static int tpm_add_char_device(struct tpm_chip *chip) static void tpm_del_char_device(struct tpm_chip *chip) { - cdev_del(&chip->cdev); - device_del(&chip->dev); + cdev_device_del(&chip->cdev, &chip->dev); /* Make the chip unavailable. */ mutex_lock(&idr_lock); -- 2.1.4