[PATCH v2 3/4] wifi: ath12k: Refactor ath12k_get_num_hw() helper function argument

[Karthikeyan Periyasamy]

Currently, the ath12k_get_num_hw() helper function takes the device handle
as an argument. Here, the number of hardware is retrieved from the group
handle. Demanding the device handle from the caller is unnecessary since
in some cases the group handle is already available. Therefore, change this
helper function argument from the device handle to the group handle. This
also fixes the below Smatch static checker warning.

Smatch warning:
ath12k_mac_destroy() error: we previously assumed 'ab' could be null

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Reported-by: Dan Carpenter <dan.carpenter at linaro.org>
Closes: https://lore.kernel.org/ath12k/3e705de0-67d1-4437-97ff-4828d83ae2af@stanley.mountain/
Closes: https://scan7.scan.coverity.com/#/project-view/52682/11354?selectedIssue=1602340
Fixes: a343d97f27f5 ("wifi: ath12k: move struct ath12k_hw from per device to group")
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa at quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c | 8 ++++----
 drivers/net/wireless/ath/ath12k/core.h | 4 ++--
 drivers/net/wireless/ath/ath12k/mac.c  | 6 +++---
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index af49e7db4928..7b482637676a 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -1183,7 +1183,7 @@ static void ath12k_rfkill_work(struct work_struct *work)
 	rfkill_radio_on = ab->rfkill_radio_on;
 	spin_unlock_bh(&ab->base_lock);
 
-	for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+	for (i = 0; i < ath12k_get_num_hw(ab->ag); i++) {
 		ah = ath12k_ag_to_ah(ab->ag, i);
 		if (!ah)
 			continue;
@@ -1235,7 +1235,7 @@ static void ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab)
 	if (ab->is_reset)
 		set_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags);
 
-	for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+	for (i = 0; i < ath12k_get_num_hw(ab->ag); i++) {
 		ah = ath12k_ag_to_ah(ab->ag, i);
 		if (!ah || ah->state == ATH12K_HW_STATE_OFF)
 			continue;
@@ -1274,7 +1274,7 @@ static void ath12k_core_post_reconfigure_recovery(struct ath12k_base *ab)
 	struct ath12k *ar;
 	int i, j;
 
-	for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+	for (i = 0; i < ath12k_get_num_hw(ab->ag); i++) {
 		ah = ath12k_ag_to_ah(ab->ag, i);
 		if (!ah || ah->state == ATH12K_HW_STATE_OFF)
 			continue;
@@ -1336,7 +1336,7 @@ static void ath12k_core_restart(struct work_struct *work)
 			ath12k_dbg(ab, ATH12K_DBG_BOOT, "reset success\n");
 		}
 
-		for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+		for (i = 0; i < ath12k_get_num_hw(ab->ag); i++) {
 			ah = ath12k_ag_to_ah(ab->ag, i);
 			ieee80211_restart_hw(ah->hw);
 		}
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 6b31e053d6da..f37a50f3eabb 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -1209,9 +1209,9 @@ static inline void ath12k_ag_set_ah(struct ath12k_hw_group *ag, int idx,
 	ag->ah[idx] = ah;
 }
 
-static inline int ath12k_get_num_hw(struct ath12k_base *ab)
+static inline int ath12k_get_num_hw(struct ath12k_hw_group *ag)
 {
-	return ab->ag->num_hw;
+	return ag->num_hw;
 }
 
 static inline struct ath12k_hw_group *ath12k_ab_to_ag(struct ath12k_base *ab)
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 99159663ecad..c4eb54480ad1 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -11227,7 +11227,7 @@ int ath12k_mac_register(struct ath12k_hw_group *ag)
 	int i;
 	int ret;
 
-	for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+	for (i = 0; i < ath12k_get_num_hw(ag); i++) {
 		ah = ath12k_ag_to_ah(ag, i);
 
 		ret = ath12k_mac_hw_register(ah);
@@ -11259,7 +11259,7 @@ void ath12k_mac_unregister(struct ath12k_hw_group *ag)
 
 	clear_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags);
 
-	for (i = ath12k_get_num_hw(ab) - 1; i >= 0; i--) {
+	for (i = ath12k_get_num_hw(ag) - 1; i >= 0; i--) {
 		ah = ath12k_ag_to_ah(ag, i);
 		if (!ah)
 			continue;
@@ -11340,7 +11340,7 @@ void ath12k_mac_destroy(struct ath12k_hw_group *ag)
 		}
 	}
 
-	for (i = 0; i < ath12k_get_num_hw(ab); i++) {
+	for (i = 0; i < ath12k_get_num_hw(ag); i++) {
 		ah = ath12k_ag_to_ah(ag, i);
 		if (!ah)
 			continue;
-- 
2.34.1