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Thu, 11 Apr 2024 08:37:21 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.37.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:37:20 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 204/437] staging: vc04_services: convert to read/write iterators Date: Thu, 11 Apr 2024 09:15:44 -0600 Message-ID: <20240411153126.16201-205-axboe@kernel.dk> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240411153126.16201-1-axboe@kernel.dk> References: <20240411153126.16201-1-axboe@kernel.dk> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Signed-off-by: Jens Axboe --- .../interface/vchiq_arm/vchiq_debugfs.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugf= s.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs.c index d833e4e2973a..0e18e2020654 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs.c @@ -52,15 +52,14 @@ static int debugfs_trace_open(struct inode *inode, stru= ct file *file) return single_open(file, debugfs_trace_show, inode->i_private); } =20 -static ssize_t debugfs_trace_write(struct file *file, - const char __user *buffer, - size_t count, loff_t *ppos) +static ssize_t debugfs_trace_write(struct kiocb *iocb, struct iov_iter *fr= om) { - struct seq_file *f =3D (struct seq_file *)file->private_data; + struct seq_file *f =3D iocb->ki_filp->private_data; struct vchiq_instance *instance =3D f->private; + size_t count =3D iov_iter_count(from); char firstchar; =20 - if (copy_from_user(&firstchar, buffer, 1)) + if (!copy_from_iter_full(&firstchar, 1, from)) return -EFAULT; =20 switch (firstchar) { @@ -78,16 +77,15 @@ static ssize_t debugfs_trace_write(struct file *file, break; } =20 - *ppos +=3D count; - + iocb->ki_pos +=3D count; return count; } =20 static const struct file_operations debugfs_trace_fops =3D { .owner =3D THIS_MODULE, .open =3D debugfs_trace_open, - .write =3D debugfs_trace_write, - .read =3D seq_read, + .write_iter =3D debugfs_trace_write, + .read_iter =3D seq_read_iter, .llseek =3D seq_lseek, .release =3D single_release, }; --=20 2.43.0