Linux-i3c Archive on lore.kernel.org
 help / color / Atom feed
From: Vitor Soares <Vitor.Soares@synopsys.com>
To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-i3c@lists.infradead.org
Cc: mark.rutland@arm.com, Joao.Pinto@synopsys.com,
	robh+dt@kernel.org, Vitor Soares <Vitor.Soares@synopsys.com>,
	bbrezillon@kernel.org
Subject: [PATCH 1/4] i3c: master: detach and free device if pre_assign_dyn_addr() fails
Date: Thu, 29 Aug 2019 12:19:32 +0200
Message-ID: <e26948eaaf765f683d8fe0618a31a98e2ecc0e65.1567071213.git.vitor.soares@synopsys.com> (raw)
In-Reply-To: <cover.1567071213.git.vitor.soares@synopsys.com>
In-Reply-To: <cover.1567071213.git.vitor.soares@synopsys.com>

On pre_assing_dyn_addr() the devices that fail:
  i3c_master_setdasa_locked()
  i3c_master_reattach_i3c_dev()
  i3c_master_retrieve_dev_info()

are kept in memory and master->bus.devs list. This makes the i3c devices
without a dynamic address are sent on DEFSLVS CCC command. Fix this by
detaching and freeing the devices that fail on pre_assign_dyn_addr().

Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
---
 drivers/i3c/master.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 5f4bd52..4d29e1f 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1438,7 +1438,7 @@ static void i3c_master_pre_assign_dyn_addr(struct i3c_dev_desc *dev)
 	ret = i3c_master_setdasa_locked(master, dev->info.static_addr,
 					dev->boardinfo->init_dyn_addr);
 	if (ret)
-		return;
+		goto err_detach_dev;
 
 	dev->info.dyn_addr = dev->boardinfo->init_dyn_addr;
 	ret = i3c_master_reattach_i3c_dev(dev, 0);
@@ -1453,6 +1453,10 @@ static void i3c_master_pre_assign_dyn_addr(struct i3c_dev_desc *dev)
 
 err_rstdaa:
 	i3c_master_rstdaa_locked(master, dev->boardinfo->init_dyn_addr);
+
+err_detach_dev:
+	i3c_master_detach_i3c_dev(dev);
+	i3c_master_free_i3c_dev(dev);
 }
 
 static void
@@ -1647,7 +1651,7 @@ static int i3c_master_bus_init(struct i3c_master_controller *master)
 	enum i3c_addr_slot_status status;
 	struct i2c_dev_boardinfo *i2cboardinfo;
 	struct i3c_dev_boardinfo *i3cboardinfo;
-	struct i3c_dev_desc *i3cdev;
+	struct i3c_dev_desc *i3cdev, *i3ctmp;
 	struct i2c_dev_desc *i2cdev;
 	int ret;
 
@@ -1746,7 +1750,8 @@ static int i3c_master_bus_init(struct i3c_master_controller *master)
 	 * Pre-assign dynamic address and retrieve device information if
 	 * needed.
 	 */
-	i3c_bus_for_each_i3cdev(&master->bus, i3cdev)
+	list_for_each_entry_safe(i3cdev, i3ctmp, &master->bus.devs.i3c,
+				 common.node)
 		i3c_master_pre_assign_dyn_addr(i3cdev);
 
 	ret = i3c_master_do_daa(master);
-- 
2.7.4


_______________________________________________
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c

  reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-29 10:19 [PATCH 0/4] i3c: remove device if failed on pre_assign_dyn_addr() Vitor Soares
2019-08-29 10:19 ` Vitor Soares [this message]
2019-08-29 10:41   ` [PATCH 1/4] i3c: master: detach and free device if pre_assign_dyn_addr() fails Boris Brezillon
2019-08-29 13:53     ` Vitor Soares
2019-08-29 14:35       ` Boris Brezillon
2019-08-29 15:23         ` Vitor Soares
2019-08-29 15:37           ` Boris Brezillon
2019-08-29 16:23             ` Vitor Soares
2019-08-29 10:19 ` [PATCH 2/4] i3c: master: Check if devices have i3c_dev_boardinfo on i3c_master_add_i3c_dev_locked() Vitor Soares
2019-08-29 10:44   ` Boris Brezillon
2019-08-29 14:00     ` Vitor Soares
2019-08-29 14:39       ` Boris Brezillon
2019-08-29 14:39         ` Boris Brezillon
2019-08-29 15:07           ` Vitor Soares
2019-08-29 15:24             ` Boris Brezillon
2019-08-29 15:57               ` Vitor Soares
2019-08-29 16:15                 ` Boris Brezillon
2019-08-29 16:33                   ` Vitor Soares
2019-08-29 16:37                     ` Boris Brezillon
2019-08-29 16:27   ` Boris Brezillon
2019-08-29 10:19 ` [PATCH 3/4] dt-bindings: i3c: Make 'assigned-address' valid if static address != 0 Vitor Soares
2019-08-29 10:51   ` Boris Brezillon
2019-08-29 14:06     ` Vitor Soares
2019-08-29 10:19 ` [PATCH 4/4] i3c: master: dw: reattach device on first available location of address table Vitor Soares
2019-08-29 11:15   ` Boris Brezillon
2019-08-29 14:09     ` Vitor Soares

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=e26948eaaf765f683d8fe0618a31a98e2ecc0e65.1567071213.git.vitor.soares@synopsys.com \
    --to=vitor.soares@synopsys.com \
    --cc=Joao.Pinto@synopsys.com \
    --cc=bbrezillon@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.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

Linux-i3c Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-i3c/0 linux-i3c/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-i3c linux-i3c/ https://lore.kernel.org/linux-i3c \
		linux-i3c@lists.infradead.org
	public-inbox-index linux-i3c

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-i3c


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git