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Subject[PATCH v2 1/2] base: soc: Let soc_device_match() return no match when called too early
If soc_device_match() is called before the SoC bus has been registered,
bus_for_each_dev() returns -EINVAL, which is considered a match, as it
is non-zero.

While calling soc_device_match() too early can be considered an
integration mistake, returning a match is counter-intuitive:
soc_device_match() is typically used to handle quirks, i.e. to deviate
from the default path. Hence add a check to abort checking and return
no match instead.

Signed-off-by: Geert Uytterhoeven <>
Acked-by: Arnd Bergmann <>
- Drop RFC state,
- Add Acked-by,
- Add missing "too early" to second paragraph of description.
drivers/base/soc.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index dc26e5949a320223..50033081834a9ccd 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -230,6 +230,8 @@ const struct soc_device_attribute *soc_device_match(
ret = bus_for_each_dev(&soc_bus_type, NULL, (void *)matches,
+ if (ret < 0)
+ return NULL;
if (!ret)
 \ /
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