diff options
| author | Dave Airlie <airlied@redhat.com> | 2025-09-15 17:51:07 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2025-09-15 17:51:07 +1000 |
| commit | 0d9f0083f7a5a31d91d501467b499bb8c4b25bdf (patch) | |
| tree | 5670a6d87e7cb5c421809babf9dc9e72ff40f8ae /drivers/net/wireless/intel/iwlwifi/fw/acpi.c | |
| parent | 2cda9a063dd6f21e5294092a679afdcd0fc58549 (diff) | |
| parent | f83ec76bf285bea5727f478a68b894f5543ca76e (diff) | |
Merge tag 'v6.17-rc6' into drm-next
This is a backmerge of Linux 6.17-rc6, needed for msm,
also requested by misc.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index bee7d92293b8..7ec22738b5d6 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -169,7 +169,7 @@ int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt, BUILD_BUG_ON(ARRAY_SIZE(acpi_dsm_size) != DSM_FUNC_NUM_FUNCS); - if (WARN_ON(func >= ARRAY_SIZE(acpi_dsm_size))) + if (WARN_ON(func >= ARRAY_SIZE(acpi_dsm_size) || !func)) return -EINVAL; expected_size = acpi_dsm_size[func]; @@ -178,6 +178,29 @@ int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt, if (expected_size != sizeof(u8) && expected_size != sizeof(u32)) return -EOPNOTSUPP; + if (!fwrt->acpi_dsm_funcs_valid) { + ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, + DSM_FUNC_QUERY, + &iwl_guid, &tmp, + acpi_dsm_size[DSM_FUNC_QUERY]); + if (ret) { + /* always indicate BIT(0) to avoid re-reading */ + fwrt->acpi_dsm_funcs_valid = BIT(0); + return ret; + } + + IWL_DEBUG_RADIO(fwrt, "ACPI DSM validity bitmap 0x%x\n", + (u32)tmp); + /* always indicate BIT(0) to avoid re-reading */ + fwrt->acpi_dsm_funcs_valid = tmp | BIT(0); + } + + if (!(fwrt->acpi_dsm_funcs_valid & BIT(func))) { + IWL_DEBUG_RADIO(fwrt, "ACPI DSM %d not indicated as valid\n", + func); + return -ENODATA; + } + ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, func, &iwl_guid, &tmp, expected_size); if (ret) |