All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ahmad Fatoum <ahmad@a3f.at>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <ahmad@a3f.at>
Subject: [PATCH 1/9] virtio: align virtio_config_ops::generation return type with Linux
Date: Sun, 28 Feb 2021 20:08:28 +0100	[thread overview]
Message-ID: <20210228190836.1451663-1-ahmad@a3f.at> (raw)

The U-Boot return type for the function differs from Linux. We use
the Linux API elsewhere, so use it here as well.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
---
 drivers/virtio/virtio_mmio.c  | 8 +++-----
 include/linux/virtio_config.h | 9 ++++-----
 2 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 821b43871a04..4a689495b8df 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -141,16 +141,14 @@ static int virtio_mmio_set_config(struct virtio_device *vdev, unsigned int offse
 	return 0;
 }
 
-static int virtio_mmio_generation(struct virtio_device *vdev, u32 *counter)
+static u32 virtio_mmio_generation(struct virtio_device *vdev)
 {
 	struct virtio_mmio_device *priv = to_virtio_mmio_device(vdev);
 
 	if (priv->version == 1)
-		*counter = 0;
-	else
-		*counter = readl(priv->base + VIRTIO_MMIO_CONFIG_GENERATION);
+		return 0;
 
-	return 0;
+	return readl(priv->base + VIRTIO_MMIO_CONFIG_GENERATION);
 }
 
 static int virtio_mmio_get_status(struct virtio_device *vdev)
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 5ee0807fb098..3ed7001f4800 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -49,10 +49,9 @@ struct virtio_config_ops {
 	 * generation() - config generation counter
 	 *
 	 * @vdev:	the real virtio device
-	 * @counter:	the returned config generation counter
-	 * @return 0 if OK, -ve on error
+	 * @return the config generation counter
 	 */
-	int (*generation)(struct virtio_device *vdev, u32 *counter);
+	u32 (*generation)(struct virtio_device *vdev);
 	/**
 	 * get_status() - read the status byte
 	 *
@@ -311,7 +310,7 @@ static inline void __virtio_cread_many(struct virtio_device *vdev,
 	int i;
 
 	/* no need to check return value as generation can be optional */
-	vdev->config->generation(vdev, &gen);
+	gen = vdev->config->generation(vdev);
 	do {
 		old = gen;
 
@@ -319,7 +318,7 @@ static inline void __virtio_cread_many(struct virtio_device *vdev,
 			virtio_get_config(vdev, offset + bytes * i,
 					  buf + i * bytes, bytes);
 
-		vdev->config->generation(vdev, &gen);
+		gen = vdev->config->generation(vdev);
 	} while (gen != old);
 }
 
-- 
2.30.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox


             reply	other threads:[~2021-02-28 19:10 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-28 19:08 Ahmad Fatoum [this message]
2021-02-28 19:08 ` [PATCH 2/9] virtio: remove unused, left-over, virtio_config_ops::set_features Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 3/9] hw_random: virtio: simplify code Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 4/9] dma: move dma_map/unmap_single from ARM to common code Ahmad Fatoum
2021-03-03 12:08   ` Sascha Hauer
2021-03-03 16:12   ` [PATCH] " Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 5/9] virtio: ring: fix erroneous behavior around caches and MMU Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 6/9] virtio: fix support for big-endian clients Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 7/9] PCI: port Linux pci_find_capability Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 8/9] virtio: support virtio-based device drivers over PCI Ahmad Fatoum
2021-02-28 19:08 ` [PATCH 9/9] virtio: virtio-pci: restrict MIPS support to MMU configuration Ahmad Fatoum
2021-03-02 14:28   ` Antony Pavlov
2021-03-03 17:10     ` Ahmad Fatoum
2021-03-01 16:29 ` [PATCH 1/9] virtio: align virtio_config_ops::generation return type with Linux Sascha Hauer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210228190836.1451663-1-ahmad@a3f.at \
    --to=ahmad@a3f.at \
    --cc=barebox@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.