From 5d7969bf2bce73fdb91bd53ad39b1f0ab43f5ce3 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sat, 23 Jul 2011 10:24:44 -0700 Subject: [PATCH] iwlagn: separate firmware version warning We sometimes need to support new firmware API for a while before we can publish them since testing them fully takes a long time. We could keep all the new code private, but that causes plenty of problems and sometimes we can give a pre-release version of firmware to people who need to test. However, when we just bump the API version, the driver will warn everybody that their firmware is outdated, when in fact it isn't. (Currently our case for this doesn't really change the API but bumping the API version is necessary because the firmware isn't fully backward compatible) In order to handle this in the future, add a new "api_ok" version; only below this will the driver warn that the uCode is too old. Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn.c | 24 +++++++++++++++++------- drivers/net/wireless/iwlwifi/iwl-core.h | 3 +++ 2 files changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 5ad85b2a213a..44400f9aa7b9 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -951,6 +951,7 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) int err; struct iwlagn_firmware_pieces pieces; const unsigned int api_max = priv->cfg->ucode_api_max; + unsigned int api_ok = priv->cfg->ucode_api_ok; const unsigned int api_min = priv->cfg->ucode_api_min; u32 api_ver; char buildstr[25]; @@ -961,10 +962,13 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE, }; + if (!api_ok) + api_ok = api_max; + memset(&pieces, 0, sizeof(pieces)); if (!ucode_raw) { - if (priv->fw_index <= priv->cfg->ucode_api_max) + if (priv->fw_index <= api_ok) IWL_ERR(priv, "request for firmware file '%s' failed.\n", priv->firmware_name); @@ -1010,12 +1014,18 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) goto try_again; } - if (api_ver != api_max) - IWL_ERR(priv, - "Firmware has old API version. Expected v%u, " - "got v%u. New firmware can be obtained " - "from http://www.intellinuxwireless.org.\n", - api_max, api_ver); + if (api_ver < api_ok) { + if (api_ok != api_max) + IWL_ERR(priv, "Firmware has old API version, " + "expected v%u through v%u, got v%u.\n", + api_ok, api_max, api_ver); + else + IWL_ERR(priv, "Firmware has old API version, " + "expected v%u, got v%u.\n", + api_max, api_ver); + IWL_ERR(priv, "New firmware can be obtained from " + "http://www.intellinuxwireless.org/.\n"); + } } if (build) diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index 02817a438550..0e5be5abb005 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -194,6 +194,8 @@ struct iwl_ht_params { * (.ucode) will be added to filename before loading from disk. The * filename is constructed as fw_name_pre.ucode. * @ucode_api_max: Highest version of uCode API supported by driver. + * @ucode_api_ok: oldest version of the uCode API that is OK to load + * without a warning, for use in transitions * @ucode_api_min: Lowest version of uCode API supported by driver. * @valid_tx_ant: valid transmit antenna * @valid_rx_ant: valid receive antenna @@ -237,6 +239,7 @@ struct iwl_cfg { const char *name; const char *fw_name_pre; const unsigned int ucode_api_max; + const unsigned int ucode_api_ok; const unsigned int ucode_api_min; u8 valid_tx_ant; u8 valid_rx_ant; -- 2.20.1