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This patch resolves an issue where RF calibration data from a file could not be downloaded to the firmware. The feature to download calibration data from a file was broken by the commit:d39fbc8895. The issue arose because the function `mwifiex_cmd_cfg_data()` was modified in a way that prevented proper handling of file-based calibration data. While this patch restores the ability to download RF calibration data from a file, it may inadvertently break the feature to download calibration data from the device tree. This is because the function `mwifiex_dnld_dt_cfgdata()`, which also relies on `mwifiex_cmd_cfg_data()`, is still used for device tree-based calibration data downloads. Fixes:d39fbc8895("mwifiex: remove cfg_data construction") Signed-off-by: Jeff Chen <jeff.chen_1@nxp.com> Link: https://patch.msgid.link/20250318050739.2239376-3-jeff.chen_1@nxp.com [add newline for shorter lines] Signed-off-by: Johannes Berg <johannes.berg@intel.com>