wifi: iwlwifi: make the loop for card preparation effective

[ Upstream commit 28965ec0b5d9112585f725660e2ff13218505ace ]

Since we didn't reset t to 0, only the first iteration of the loop
did checked the ready bit several times.
From the second iteration and on, we just tested the bit once and
continued to the next iteration.

Reported-and-tested-by: Lorenzo Zolfanelli <lorenzo@zolfa.nl>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216452
Fixes: 289e5501c314 ("iwlwifi: fix the preparation of the card")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230416154301.615b683ab9c8.Ic52c3229d3345b0064fa34263293db095d88daf8@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 1690d7a..54f11f6 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -599,7 +599,6 @@ static int iwl_pcie_set_hw_ready(struct iwl_trans *trans)
 int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
 {
        int ret;
-       int t = 0;
        int iter;
 
        IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
@@ -616,6 +615,8 @@ int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
        usleep_range(1000, 2000);
 
        for (iter = 0; iter < 10; iter++) {
+               int t = 0;
+
                /* If HW is not ready, prepare the conditions to check again */
                iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
                            CSR_HW_IF_CONFIG_REG_PREPARE);