From: Adrian Hunter <adrian.hunter@intel.com>
To: alexandre.belloni@bootlin.com
Cc: Frank.Li@nxp.com, linux-i3c@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH V2 6/7] i3c: master: Move DAA API functions after i3c_master_add_i3c_dev_locked()
Date: Mon, 8 Jun 2026 10:57:59 +0300 [thread overview]
Message-ID: <20260608075801.16111-7-adrian.hunter@intel.com> (raw)
In-Reply-To: <20260608075801.16111-1-adrian.hunter@intel.com>
Relocate i3c_master_do_daa_ext() and i3c_master_do_daa() so they appear
after i3c_master_add_i3c_dev_locked().
This ordering is required for upcoming changes where the DAA flow will
(indirectly) rely on i3c_master_add_i3c_dev_locked() functionality.
Reordering avoids forward dependency issues and keeps related code paths
logically arranged.
No functional change.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
Changes in V2:
None
drivers/i3c/master.c | 128 +++++++++++++++++++++----------------------
1 file changed, 64 insertions(+), 64 deletions(-)
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 57857a3351c7..5021d25b718a 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1870,70 +1870,6 @@ static void i3c_master_reg_work_fn(struct work_struct *work)
i3c_bus_normaluse_unlock(&master->bus);
}
-/**
- * i3c_master_do_daa_ext() - Dynamic Address Assignment (extended version)
- * @master: controller
- * @rstdaa: whether to first perform Reset of Dynamic Addresses (RSTDAA)
- *
- * Perform Dynamic Address Assignment with optional support for System
- * Hibernation (@rstdaa is true).
- *
- * After System Hibernation, Dynamic Addresses can have been reassigned at boot
- * time to different values. A simple strategy is followed to handle that.
- * Perform a Reset of Dynamic Addresses (RSTDAA) followed by the normal DAA
- * procedure which has provision for reassigning addresses that differ from the
- * previously recorded addresses.
- *
- * Return: a 0 in case of success, an negative error code otherwise.
- */
-int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa)
-{
- int rstret = 0;
- int ret;
-
- ret = i3c_master_rpm_get(master);
- if (ret)
- return ret;
-
- i3c_bus_maintenance_lock(&master->bus);
-
- if (master->shutting_down) {
- ret = -ENODEV;
- } else {
- if (rstdaa)
- rstret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
- ret = master->ops->do_daa(master);
- }
-
- i3c_bus_maintenance_unlock(&master->bus);
-
- if (ret)
- goto out;
-
- queue_work(master->wq, &master->reg_work);
-out:
- i3c_master_rpm_put(master);
-
- return rstret ?: ret;
-}
-EXPORT_SYMBOL_GPL(i3c_master_do_daa_ext);
-
-/**
- * i3c_master_do_daa() - do a DAA (Dynamic Address Assignment)
- * @master: master doing the DAA
- *
- * This function instantiates I3C device objects and adds them to the
- * I3C device list. All device information is automatically retrieved using
- * standard CCC commands.
- *
- * Return: a 0 in case of success, an negative error code otherwise.
- */
-int i3c_master_do_daa(struct i3c_master_controller *master)
-{
- return i3c_master_do_daa_ext(master, false);
-}
-EXPORT_SYMBOL_GPL(i3c_master_do_daa);
-
/**
* i3c_master_dma_map_single() - Map buffer for single DMA transfer
* @dev: device object of a device doing DMA
@@ -2476,6 +2412,70 @@ void i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master, u8 addr
}
EXPORT_SYMBOL_GPL(i3c_master_add_i3c_dev_locked);
+/**
+ * i3c_master_do_daa_ext() - Dynamic Address Assignment (extended version)
+ * @master: controller
+ * @rstdaa: whether to first perform Reset of Dynamic Addresses (RSTDAA)
+ *
+ * Perform Dynamic Address Assignment with optional support for System
+ * Hibernation (@rstdaa is true).
+ *
+ * After System Hibernation, Dynamic Addresses can have been reassigned at boot
+ * time to different values. A simple strategy is followed to handle that.
+ * Perform a Reset of Dynamic Addresses (RSTDAA) followed by the normal DAA
+ * procedure which has provision for reassigning addresses that differ from the
+ * previously recorded addresses.
+ *
+ * Return: a 0 in case of success, an negative error code otherwise.
+ */
+int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa)
+{
+ int rstret = 0;
+ int ret;
+
+ ret = i3c_master_rpm_get(master);
+ if (ret)
+ return ret;
+
+ i3c_bus_maintenance_lock(&master->bus);
+
+ if (master->shutting_down) {
+ ret = -ENODEV;
+ } else {
+ if (rstdaa)
+ rstret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
+ ret = master->ops->do_daa(master);
+ }
+
+ i3c_bus_maintenance_unlock(&master->bus);
+
+ if (ret)
+ goto out;
+
+ queue_work(master->wq, &master->reg_work);
+out:
+ i3c_master_rpm_put(master);
+
+ return rstret ?: ret;
+}
+EXPORT_SYMBOL_GPL(i3c_master_do_daa_ext);
+
+/**
+ * i3c_master_do_daa() - do a DAA (Dynamic Address Assignment)
+ * @master: master doing the DAA
+ *
+ * This function instantiates I3C device objects and adds them to the
+ * I3C device list. All device information is automatically retrieved using
+ * standard CCC commands.
+ *
+ * Return: a 0 in case of success, an negative error code otherwise.
+ */
+int i3c_master_do_daa(struct i3c_master_controller *master)
+{
+ return i3c_master_do_daa_ext(master, false);
+}
+EXPORT_SYMBOL_GPL(i3c_master_do_daa);
+
#define OF_I3C_REG1_IS_I2C_DEV BIT(31)
static int
--
2.51.0
--
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next prev parent reply other threads:[~2026-06-08 7:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-08 7:57 [PATCH V2 0/7] i3c: Fix IBI race, address handling, and reconcile DAA Adrian Hunter
2026-06-08 7:57 ` [PATCH V2 1/7] i3c: mipi-i3c-hci: Fix race in i3c_hci_addr_to_dev() Adrian Hunter
2026-06-08 17:31 ` Frank Li
2026-06-08 7:57 ` [PATCH V2 2/7] i3c: mipi-i3c-hci: Ignore DISEC failures when disabling IBIs Adrian Hunter
2026-06-08 17:33 ` Frank Li
2026-06-08 7:57 ` [PATCH V2 3/7] i3c: master: Prevent reuse of dynamic address on device add failure Adrian Hunter
2026-06-08 7:57 ` [PATCH V2 4/7] i3c: mipi-i3c-hci: Tolerate i3c_master_add_i3c_dev_locked() failures in DAA Adrian Hunter
2026-06-08 7:57 ` [PATCH V2 5/7] i3c: master: Make i3c_master_add_i3c_dev_locked() return void Adrian Hunter
2026-06-08 7:57 ` Adrian Hunter [this message]
2026-06-08 7:58 ` [PATCH V2 7/7] i3c: master: Reconcile dynamic addresses after DAA Adrian Hunter
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