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Thu, 5 Sep 2019 10:00:49 +0000 (UTC) Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by de02.synopsys.com (Postfix) with ESMTP id 5E1AC3F3B5; Thu, 5 Sep 2019 12:00:49 +0200 (CEST) From: Vitor Soares To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-i3c@lists.infradead.org Subject: [PATCH v3 2/5] i3c: master: make sure ->boardinfo is initialized in add_i3c_dev_locked() Date: Thu, 5 Sep 2019 12:00:35 +0200 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190905_030052_856949_E0598CCF X-CRM114-Status: GOOD ( 13.42 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Mailman-Approved-At: Mon, 09 Sep 2019 23:39:51 -0700 X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, Joao.Pinto@synopsys.com, bbrezillon@kernel.org, stable@vger.kernel.org, Vitor Soares , pgaj@cadence.com, robh+dt@kernel.org MIME-Version: 1.0 Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=patchwork.kernel.org@lists.infradead.org The newdev->boardinfo assignment was missing in i3c_master_add_i3c_dev_locked() and hence the ->of_node info isn't propagated to i3c_dev_desc. Fix this by trying to initialize device i3c_dev_boardinfo if available. Cc: Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure") Signed-off-by: Vitor Soares --- Change in v3: - None Changes in v2: - Change commit message - Change i3c_master_search_i3c_boardinfo(newdev) to i3c_master_init_i3c_dev_boardinfo(newdev) - Add fixes, stable tags drivers/i3c/master.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 586e34f..9fb99bc 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -1798,6 +1798,22 @@ i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev) return NULL; } +static void i3c_master_init_i3c_dev_boardinfo(struct i3c_dev_desc *dev) +{ + struct i3c_master_controller *master = i3c_dev_get_master(dev); + struct i3c_dev_boardinfo *boardinfo; + + if (dev->boardinfo) + return; + + list_for_each_entry(boardinfo, &master->boardinfo.i3c, node) { + if (dev->info.pid == boardinfo->pid) { + dev->boardinfo = boardinfo; + return; + } + } +} + /** * i3c_master_add_i3c_dev_locked() - add an I3C slave to the bus * @master: master used to send frames on the bus @@ -1818,8 +1834,9 @@ int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master, u8 addr) { struct i3c_device_info info = { .dyn_addr = addr }; - struct i3c_dev_desc *newdev, *olddev; u8 old_dyn_addr = addr, expected_dyn_addr; + enum i3c_addr_slot_status addrstatus; + struct i3c_dev_desc *newdev, *olddev; struct i3c_ibi_setup ibireq = { }; bool enable_ibi = false; int ret; @@ -1878,6 +1895,8 @@ int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master, if (ret) goto err_detach_dev; + i3c_master_init_i3c_dev_boardinfo(newdev); + /* * Depending on our previous state, the expected dynamic address might * differ: @@ -1895,7 +1914,11 @@ int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master, else expected_dyn_addr = newdev->info.dyn_addr; - if (newdev->info.dyn_addr != expected_dyn_addr) { + addrstatus = i3c_bus_get_addr_slot_status(&master->bus, + expected_dyn_addr); + + if (newdev->info.dyn_addr != expected_dyn_addr && + addrstatus == I3C_ADDR_SLOT_FREE) { /* * Try to apply the expected dynamic address. If it fails, keep * the address assigned by the master.