When used with bootstage recording, dm_timer_init may be called
surprisingly early: i.e. before dm_root is ready. To deal with
this case, we explicitly check for this condition and return
-EAGAIN to the caller (refer to drivers/timer/rockchip_timer.c
for a case where this is needed/used).
Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
Reviewed-by: Simon Glass <s...@chromium.org>
Acked-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
---
Changes in v3: None
Changes in v2: None
drivers/timer/timer-uclass.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c
index 62d6f0b..45397b2 100644
--- a/drivers/timer/timer-uclass.c
+++ b/drivers/timer/timer-uclass.c
@@ -92,6 +92,13 @@ int notrace dm_timer_init(void)
if (gd->timer)
return 0;
+ /*
+ * Directly access gd->dm_root to suppress error messages, if the
+ * virtual root driver does not yet exist.
+ */
+ if (gd->dm_root == NULL)
+ return -EAGAIN;
+
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
/* Check for a chosen timer to be used for tick */
node = ofnode_get_chosen_node("tick-timer");
--
2.1.4
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