[PATCH] i3c: Fix default I2C adapter timeout value

Jarkko Nikula
2025-09-04T16:24:48Z

Commit 3a379bbcea0a ("i3c: Add core I3C infrastructure") set the default
adapter timeout for I2C transfers as 1000 (ms). However that parameter
is defined in jiffies not in milliseconds.

With mipi-i3c-hci driver this wasn't visible until commit c0a90eb55a69
("i3c: mipi-i3c-hci: use adapter timeout value for I2C transfers").

Fix this by setting the default timeout as HZ (CONFIG_HZ) not 1000.

Fixes: 1b84691e7870 ("i3c: dw: use adapter timeout value for I2C transfers")
Fixes: be27ed672878 ("i3c: master: cdns: use adapter timeout value for I2C transfers")
Fixes: c0a90eb55a69 ("i3c: mipi-i3c-hci: use adapter timeout value for I2C transfers")
Fixes: a747e01adad2 ("i3c: master: svc: use adapter timeout value for I2C transfers")
Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
---
drivers/i3c/master.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 2ef898a8fd80..67a18e437f83 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -2492,7 +2492,7 @@ static int i3c_master_i2c_adapter_init(struct i3c_master_controller *master)
strscpy(adap->name, dev_name(master->dev.parent), sizeof(adap->name));

/* FIXME: Should we allow i3c masters to override these values? */
- adap->timeout = 1000;
+ adap->timeout = HZ;
adap->retries = 3;

id = of_alias_get_id(master->dev.of_node, "i2c");
--
2.47.2