iwlwifi: dvm: run INIT firmware again upon .start()

[ Upstream commit 9c8928f5176766bec79f272bd47b7124e11cccbd ]

The assumption before this patch was that we don't need to
run again the INIT firmware after the system booted. The
INIT firmware runs calibrations which impact the physical
layer's behavior.
Users reported that it may be helpful to run these
calibrations again every time the interface is brought up.
The penatly is minimal, since the calibrations run fast.
This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=94341

CC: <stable@vger.kernel.org>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/drivers/net/wireless/iwlwifi/dvm/dev.h b/drivers/net/wireless/iwlwifi/dvm/dev.h
index a6f22c3..3811878 100644 (file)
--- a/drivers/net/wireless/iwlwifi/dvm/dev.h
+++ b/drivers/net/wireless/iwlwifi/dvm/dev.h
@@ -708,7 +708,6 @@ struct iwl_priv {
        unsigned long reload_jiffies;
        int reload_count;
        bool ucode_loaded;
-       bool init_ucode_run;            /* Don't run init uCode again */
 
        u8 plcp_delta_threshold;
 

diff --git a/drivers/net/wireless/iwlwifi/dvm/ucode.c b/drivers/net/wireless/iwlwifi/dvm/ucode.c
index d5cee15..80b8094 100644 (file)
--- a/drivers/net/wireless/iwlwifi/dvm/ucode.c
+++ b/drivers/net/wireless/iwlwifi/dvm/ucode.c
@@ -418,9 +418,6 @@ int iwl_run_init_ucode(struct iwl_priv *priv)
        if (!priv->fw->img[IWL_UCODE_INIT].sec[0].len)
                return 0;
 
-       if (priv->init_ucode_run)
-               return 0;
-
        iwl_init_notification_wait(&priv->notif_wait, &calib_wait,
                                   calib_complete, ARRAY_SIZE(calib_complete),
                                   iwlagn_wait_calib, priv);
@@ -440,8 +437,6 @@ int iwl_run_init_ucode(struct iwl_priv *priv)
         */
        ret = iwl_wait_notification(&priv->notif_wait, &calib_wait,
                                        UCODE_CALIB_TIMEOUT);
-       if (!ret)
-               priv->init_ucode_run = true;
 
        goto out;