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Thu, 11 Apr 2024 08:37:27 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id jc25-20020a056638891900b0047f14b7f6c0sm457056jab.5.2024.04.11.08.37.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Apr 2024 08:37:25 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 207/437] virt: fsl_hypervisor: convert to read/write iterators Date: Thu, 11 Apr 2024 09:15:47 -0600 Message-ID: <20240411153126.16201-208-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/virt/fsl_hypervisor.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c index e92e2ceb12a4..dc84e0006201 100644 --- a/drivers/virt/fsl_hypervisor.c +++ b/drivers/virt/fsl_hypervisor.c @@ -590,11 +590,10 @@ static __poll_t fsl_hv_poll(struct file *filp, struct= poll_table_struct *p) * return them to the caller as an array of 32-bit integers. Otherwise, * block until there is at least one handle to return. */ -static ssize_t fsl_hv_read(struct file *filp, char __user *buf, size_t len, - loff_t *off) +static ssize_t fsl_hv_read(struct kiocb *iocb, struct iov_iter *to) { - struct doorbell_queue *dbq =3D filp->private_data; - uint32_t __user *p =3D (uint32_t __user *) buf; /* for put_user() */ + struct doorbell_queue *dbq =3D iocb->ki_filp->private_data; + size_t len =3D iov_iter_count(to); unsigned long flags; ssize_t count =3D 0; =20 @@ -613,7 +612,7 @@ static ssize_t fsl_hv_read(struct file *filp, char __us= er *buf, size_t len, spin_unlock_irqrestore(&dbq->lock, flags); if (count) break; - if (filp->f_flags & O_NONBLOCK) + if (iocb->ki_filp->f_flags & O_NONBLOCK) return -EAGAIN; if (wait_event_interruptible(dbq->wait, dbq->head !=3D dbq->tail)) @@ -639,9 +638,8 @@ static ssize_t fsl_hv_read(struct file *filp, char __us= er *buf, size_t len, =20 spin_unlock_irqrestore(&dbq->lock, flags); =20 - if (put_user(dbell, p)) + if (put_iter(dbell, to)) return -EFAULT; - p++; count +=3D sizeof(uint32_t); len -=3D sizeof(uint32_t); } @@ -700,7 +698,7 @@ static const struct file_operations fsl_hv_fops =3D { .open =3D fsl_hv_open, .release =3D fsl_hv_close, .poll =3D fsl_hv_poll, - .read =3D fsl_hv_read, + .read_iter =3D fsl_hv_read, .unlocked_ioctl =3D fsl_hv_ioctl, .compat_ioctl =3D compat_ptr_ioctl, }; --=20 2.43.0