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iwlwifi: fw: init SAR GEO table only if data is present

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When no table data was read from ACPI, then filling the data
and returning success here will fill zero values, which means
transmit power will be limited to 0 dBm. This is clearly not
intended.

Return an error from iwl_sar_geo_init() if there's no data to
fill into the command structure.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: 78a19d5285 ("iwlwifi: mvm: Read the PPAG and SAR tables at INIT stage")
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20220517120044.bc45923b74e9.Id2b4362234b7f8ced82c591b95d4075dd2ec12f4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2022-05-17 12:05:08 +03:00
parent 51e073c23b
commit d1f6530c3e
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/intel/iwlwifi/fw/acpi.c
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@ -937,6 +937,9 @@ int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
{
int i, j;
if (!fwrt->geo_enabled)
return -ENODATA;
if (!iwl_sar_geo_support(fwrt))
return -EOPNOTSUPP;