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Thu, 11 Apr 2024 08:40:20 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.40.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:40:19 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 314/437] drivers/net/ieee802154: convert to read/write iterators Date: Thu, 11 Apr 2024 09:17:34 -0600 Message-ID: <20240411153126.16201-315-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 --- drivers/net/ieee802154/ca8210.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca821= 0.c index e685a7f946f0..af2bf8c24572 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -2443,14 +2443,12 @@ static int ca8210_test_check_upstream(u8 *buf, void= *device_ref) * Return: 0 or linux error code */ static ssize_t ca8210_test_int_user_write( - struct file *filp, - const char __user *in_buf, - size_t len, - loff_t *off -) + struct kiocb *iocb, + struct iov_iter *from) { int ret; - struct ca8210_priv *priv =3D filp->private_data; + struct ca8210_priv *priv =3D iocb->ki_filp->private_data; + size_t len =3D iov_iter_count(from); u8 command[CA8210_SPI_BUF_SIZE]; =20 memset(command, SPI_IDLE, 6); @@ -2463,7 +2461,7 @@ static ssize_t ca8210_test_int_user_write( return -EBADE; } =20 - ret =3D copy_from_user(command, in_buf, len); + ret =3D !copy_from_iter_full(command, len, from); if (ret) { dev_err( &priv->spi->dev, @@ -2518,18 +2516,15 @@ static ssize_t ca8210_test_int_user_write( * Return: number of bytes read */ static ssize_t ca8210_test_int_user_read( - struct file *filp, - char __user *buf, - size_t len, - loff_t *offp -) + struct kiocb *iocb, + struct iov_iter *to) { int i, cmdlen; - struct ca8210_priv *priv =3D filp->private_data; + struct ca8210_priv *priv =3D iocb->ki_filp->private_data; unsigned char *fifo_buffer; unsigned long bytes_not_copied; =20 - if (filp->f_flags & O_NONBLOCK) { + if (iocb->ki_filp->f_flags & O_NONBLOCK) { /* Non-blocking mode */ if (kfifo_is_empty(&priv->test.up_fifo)) return 0; @@ -2551,7 +2546,7 @@ static ssize_t ca8210_test_int_user_read( cmdlen =3D fifo_buffer[1]; bytes_not_copied =3D cmdlen + 2; =20 - bytes_not_copied =3D copy_to_user(buf, fifo_buffer, bytes_not_copied); + bytes_not_copied =3D !copy_to_iter_full(fifo_buffer, bytes_not_copied, to= ); if (bytes_not_copied > 0) { dev_err( &priv->spi->dev, @@ -2626,8 +2621,8 @@ static __poll_t ca8210_test_int_poll( } =20 static const struct file_operations test_int_fops =3D { - .read =3D ca8210_test_int_user_read, - .write =3D ca8210_test_int_user_write, + .read_iter =3D ca8210_test_int_user_read, + .write_iter =3D ca8210_test_int_user_write, .open =3D ca8210_test_int_open, .release =3D NULL, .unlocked_ioctl =3D ca8210_test_int_ioctl, --=20 2.43.0