freq_reg_info
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## Name

freq_reg_info — get regulatory information for the given frequency

## Synopsis

`const struct ieee80211_reg_rule * freq_reg_info (` | struct wiphy * wiphy,
| u32 center_freq`)`;

## Arguments

`wiphy`

  the wiphy for which we want to process this rule for

`center_freq`

  Frequency in KHz for which we want regulatory information for

## Description

Use this function to get the regulatory rule for a specific frequency on a given wireless device. If the device has a specific regulatory domain it wants to follow we respect that unless a country IE has been received and processed already.

## Return

A valid pointer, or, when an error occurs, for example if no rule can be found, the return value is encoded using `ERR_PTR`. Use `IS_ERR` to check and `PTR_ERR` to obtain the numeric return value. The numeric return value will be -ERANGE if we determine the given center_freq does not even have a regulatory rule for a frequency range in the center_freq's band. See `freq_in_rule_band` for our current definition of a band -- this is purely subjective and right now it's 802.11 specific.

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