On 1/24/19 3:45 PM, Frank Rowand wrote:
> On 1/24/19 12:08 PM, Florian Fainelli wrote:
>> Since c32569e358ad ("regulator: Use of_node_name_eq for node name
>> comparisons") Vivien reported the mc13892-regulator complaining about
>> not being able to find regulators.
>>
>> This is because prior to that commit we used of_node_cmp() to compare
>> the regulator array passed from mc13892_regulators down to
>> mc13xxx_parse_regulators_dt() and they are all defined in uppercase
>> letters by the MC13892_*_DEFINE* macros, whereas they are defined as
>> lowercase in the DTS.
>>
>> Fix this by use strncasecmp() since that makes sure the comparison is
>> case insensitive like what of_node_cmp() did.
>>
>> Reported-by: Vivien Didelot <vivien.didelot@xxxxxxxxx>
>> Fixes: c32569e358ad ("regulator: Use of_node_name_eq for node name comparisons")
>> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
>> ---
>> drivers/of/base.c | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/of/base.c b/drivers/of/base.c
>> index 5226e898476e..ff47c86277cb 100644
>> --- a/drivers/of/base.c
>> +++ b/drivers/of/base.c
>> @@ -66,7 +66,8 @@ bool of_node_name_eq(const struct device_node *np, const char *name)
>> node_name = kbasename(np->full_name);
>> len = strchrnul(node_name, '@') - node_name;
>>
>> - return (strlen(name) == len) && (strncmp(node_name, name, len) == 0);
>> + return (strlen(name) == len) &&
>> + (strncasecmp(node_name, name, len) == 0);
>> }
>> EXPORT_SYMBOL(of_node_name_eq);
>>
>>
>
> Node names are case sensitive. Please fix mc13xxx_parse_regulators_dt() to
> properly handle case instead of changing of_node_name_eq().
Fair enough, should we issue a warning if np->full_name contains upper
case while name does not (and vice versa) to help troubleshoot cases
like the one we found with Vivien?
--
Florian
