* [PATCH] of: Improve of_phandle_iterator_next() error message
@ 2019-04-03 17:56 Florian Fainelli
2019-04-10 14:07 ` Rob Herring
0 siblings, 1 reply; 2+ messages in thread
From: Florian Fainelli @ 2019-04-03 17:56 UTC (permalink / raw)
To: linux-kernel
Cc: Florian Fainelli, Rob Herring, Frank Rowand,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE
Understanding why of_phandle_iterator_next() returns an error can
sometimes be hard to decipher based solely on the error message, a
typical error example is that #foo-cells = <X> and the phandle property
used has a smaller number of cells specified, e.g.:
#thermal-sensor-cells = <1>;
phandle = <&scmi_sensor>
instead of:
phandle <&scmi_sensor 0>;
Instead, make it clear what the expectations are towards debugging
incorrect Device Tree faster:
OF: /thermal-zones/scmi-thermal: #thermal-sensor-cells = 1, found 0 instead
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/of/base.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 5226e898476e..20e0e7ee4edf 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1350,8 +1350,9 @@ int of_phandle_iterator_next(struct of_phandle_iterator *it)
* property data length
*/
if (it->cur + count > it->list_end) {
- pr_err("%pOF: arguments longer than property\n",
- it->parent);
+ pr_err("%pOF: %s = %d found %d\n",
+ it->parent, it->cells_name,
+ count, it->cell_count);
goto err;
}
}
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] of: Improve of_phandle_iterator_next() error message
2019-04-03 17:56 [PATCH] of: Improve of_phandle_iterator_next() error message Florian Fainelli
@ 2019-04-10 14:07 ` Rob Herring
0 siblings, 0 replies; 2+ messages in thread
From: Rob Herring @ 2019-04-10 14:07 UTC (permalink / raw)
To: Florian Fainelli
Cc: linux-kernel, Frank Rowand,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE
On Wed, Apr 03, 2019 at 10:56:33AM -0700, Florian Fainelli wrote:
> Understanding why of_phandle_iterator_next() returns an error can
> sometimes be hard to decipher based solely on the error message, a
> typical error example is that #foo-cells = <X> and the phandle property
> used has a smaller number of cells specified, e.g.:
>
> #thermal-sensor-cells = <1>;
> phandle = <&scmi_sensor>
>
> instead of:
>
> phandle <&scmi_sensor 0>;
>
> Instead, make it clear what the expectations are towards debugging
> incorrect Device Tree faster:
>
> OF: /thermal-zones/scmi-thermal: #thermal-sensor-cells = 1, found 0 instead
>
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
> drivers/of/base.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
Applied.
Rob
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