diff mbox series

[1/3] wifi: ath10k: cleanup CE initialization

Message ID 20230822155532.95983-1-dmantipov@yandex.ru (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show
Series [1/3] wifi: ath10k: cleanup CE initialization | expand

Commit Message

Dmitry Antipov Aug. 22, 2023, 3:54 p.m. UTC 
Commit 25d0dbcbd5c7 ("ath10k: split ce initialization and allocation")
changes 'ath10k_ce_init_src_ring()' and 'ath10k_ce_init_dest_ring()'
so these functions can't return -ENOMEM but always returns 0. This way
both of the above may be converted to 'void' and related code may be
simplified as well.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
---
 drivers/net/wireless/ath/ath10k/ahb.c  |  6 +---
 drivers/net/wireless/ath/ath10k/ce.c   | 44 +++++++-------------------
 drivers/net/wireless/ath/ath10k/ce.h   |  4 +--
 drivers/net/wireless/ath/ath10k/pci.c  | 29 ++++-------------
 drivers/net/wireless/ath/ath10k/pci.h  |  2 +-
 drivers/net/wireless/ath/ath10k/snoc.c | 22 +++----------
 6 files changed, 27 insertions(+), 80 deletions(-)

Comments

kernel test robot Aug. 23, 2023, 1:59 a.m. UTC | #1 
Hi Dmitry,

kernel test robot noticed the following build warnings:

[auto build test WARNING on kvalo-ath/ath-next]
[also build test WARNING on wireless-next/main wireless/main linus/master v6.5-rc7 next-20230822]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Dmitry-Antipov/wifi-ath10k-simplify-ath10k_peer_assoc_h_vht/20230822-235854
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git ath-next
patch link:    https://lore.kernel.org/r/20230822155532.95983-1-dmantipov%40yandex.ru
patch subject: [PATCH 1/3] wifi: ath10k: cleanup CE initialization
config: sparc64-allyesconfig (https://download.01.org/0day-ci/archive/20230823/202308230929.vOiA1VSe-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230823/202308230929.vOiA1VSe-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308230929.vOiA1VSe-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/wireless/ath/ath10k/snoc.c: In function 'ath10k_snoc_hif_power_up':
>> drivers/net/wireless/ath/ath10k/snoc.c:1083:1: warning: label 'err_free_rri' defined but not used [-Wunused-label]
    1083 | err_free_rri:
         | ^~~~~~~~~~~~


vim +/err_free_rri +1083 drivers/net/wireless/ath/ath10k/snoc.c

0fa4fbe9b8cf76 Govind Singh   2018-04-10  1056  
3c545a25939c27 Rakesh Pillai  2019-02-08  1057  static int ath10k_snoc_hif_power_up(struct ath10k *ar,
3c545a25939c27 Rakesh Pillai  2019-02-08  1058  				    enum ath10k_firmware_mode fw_mode)
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1059  {
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1060  	int ret;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1061  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1062  	ath10k_dbg(ar, ATH10K_DBG_SNOC, "%s:WCN3990 driver state = %d\n",
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1063  		   __func__, ar->state);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1064  
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1065  	ret = ath10k_hw_power_on(ar);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1066  	if (ret) {
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1067  		ath10k_err(ar, "failed to power on device: %d\n", ret);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1068  		return ret;
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1069  	}
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1070  
3c545a25939c27 Rakesh Pillai  2019-02-08  1071  	ret = ath10k_snoc_wlan_enable(ar, fw_mode);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1072  	if (ret) {
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1073  		ath10k_err(ar, "failed to enable wcn3990: %d\n", ret);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1074  		goto err_hw_power_off;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1075  	}
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1076  
4945af5b264fbd Govind Singh   2018-04-17  1077  	ath10k_ce_alloc_rri(ar);
4945af5b264fbd Govind Singh   2018-04-17  1078  
7279d6262224cd Dmitry Antipov 2023-08-22  1079  	ath10k_snoc_init_pipes(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1080  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1081  	return 0;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1082  
31561e8557cd1e Rakesh Pillai  2020-12-12 @1083  err_free_rri:
31561e8557cd1e Rakesh Pillai  2020-12-12  1084  	ath10k_ce_free_rri(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1085  	ath10k_snoc_wlan_disable(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1086  
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1087  err_hw_power_off:
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1088  	ath10k_hw_power_off(ar);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1089  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1090  	return ret;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1091  }
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1092
kernel test robot Aug. 23, 2023, 7:34 a.m. UTC | #2 
Hi Dmitry,

kernel test robot noticed the following build warnings:

[auto build test WARNING on kvalo-ath/ath-next]
[also build test WARNING on wireless-next/main wireless/main linus/master v6.5-rc7 next-20230822]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Dmitry-Antipov/wifi-ath10k-simplify-ath10k_peer_assoc_h_vht/20230822-235854
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git ath-next
patch link:    https://lore.kernel.org/r/20230822155532.95983-1-dmantipov%40yandex.ru
patch subject: [PATCH 1/3] wifi: ath10k: cleanup CE initialization
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230823/202308231552.qVY1nOZs-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce: (https://download.01.org/0day-ci/archive/20230823/202308231552.qVY1nOZs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308231552.qVY1nOZs-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/wireless/ath/ath10k/snoc.c:1083:1: warning: unused label 'err_free_rri' [-Wunused-label]
   err_free_rri:
   ^~~~~~~~~~~~~
   1 warning generated.


vim +/err_free_rri +1083 drivers/net/wireless/ath/ath10k/snoc.c

0fa4fbe9b8cf76 Govind Singh   2018-04-10  1056  
3c545a25939c27 Rakesh Pillai  2019-02-08  1057  static int ath10k_snoc_hif_power_up(struct ath10k *ar,
3c545a25939c27 Rakesh Pillai  2019-02-08  1058  				    enum ath10k_firmware_mode fw_mode)
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1059  {
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1060  	int ret;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1061  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1062  	ath10k_dbg(ar, ATH10K_DBG_SNOC, "%s:WCN3990 driver state = %d\n",
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1063  		   __func__, ar->state);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1064  
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1065  	ret = ath10k_hw_power_on(ar);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1066  	if (ret) {
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1067  		ath10k_err(ar, "failed to power on device: %d\n", ret);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1068  		return ret;
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1069  	}
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1070  
3c545a25939c27 Rakesh Pillai  2019-02-08  1071  	ret = ath10k_snoc_wlan_enable(ar, fw_mode);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1072  	if (ret) {
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1073  		ath10k_err(ar, "failed to enable wcn3990: %d\n", ret);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1074  		goto err_hw_power_off;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1075  	}
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1076  
4945af5b264fbd Govind Singh   2018-04-17  1077  	ath10k_ce_alloc_rri(ar);
4945af5b264fbd Govind Singh   2018-04-17  1078  
7279d6262224cd Dmitry Antipov 2023-08-22  1079  	ath10k_snoc_init_pipes(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1080  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1081  	return 0;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1082  
31561e8557cd1e Rakesh Pillai  2020-12-12 @1083  err_free_rri:
31561e8557cd1e Rakesh Pillai  2020-12-12  1084  	ath10k_ce_free_rri(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1085  	ath10k_snoc_wlan_disable(ar);
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1086  
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1087  err_hw_power_off:
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1088  	ath10k_hw_power_off(ar);
5f1aa93ffa1f36 Rakesh Pillai  2020-12-12  1089  
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1090  	return ret;
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1091  }
0fa4fbe9b8cf76 Govind Singh   2018-04-10  1092
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath10k/ahb.c b/drivers/net/wireless/ath/ath10k/ahb.c
index 76efea2f1138..c3a2eeb5542d 100644
--- a/drivers/net/wireless/ath/ath10k/ahb.c
+++ b/drivers/net/wireless/ath/ath10k/ahb.c
@@ -655,11 +655,7 @@  static int ath10k_ahb_hif_power_up(struct ath10k *ar,
 		goto out;
 	}
 
-	ret = ath10k_pci_init_pipes(ar);
-	if (ret) {
-		ath10k_err(ar, "failed to initialize CE: %d\n", ret);
-		goto out;
-	}
+	ath10k_pci_init_pipes(ar);
 
 	ret = ath10k_pci_init_config(ar);
 	if (ret) {
diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
index c27b8204718a..73aa3632b23c 100644
--- a/drivers/net/wireless/ath/ath10k/ce.c
+++ b/drivers/net/wireless/ath/ath10k/ce.c
@@ -1352,9 +1352,9 @@  void ath10k_ce_enable_interrupts(struct ath10k *ar)
 }
 EXPORT_SYMBOL(ath10k_ce_enable_interrupts);
 
-static int ath10k_ce_init_src_ring(struct ath10k *ar,
-				   unsigned int ce_id,
-				   const struct ce_attr *attr)
+static void ath10k_ce_init_src_ring(struct ath10k *ar,
+				    unsigned int ce_id,
+				    const struct ce_attr *attr)
 {
 	struct ath10k_ce *ce = ath10k_ce_priv(ar);
 	struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
@@ -1389,13 +1389,11 @@  static int ath10k_ce_init_src_ring(struct ath10k *ar,
 	ath10k_dbg(ar, ATH10K_DBG_BOOT,
 		   "boot init ce src ring id %d entries %d base_addr %pK\n",
 		   ce_id, nentries, src_ring->base_addr_owner_space);
-
-	return 0;
 }
 
-static int ath10k_ce_init_dest_ring(struct ath10k *ar,
-				    unsigned int ce_id,
-				    const struct ce_attr *attr)
+static void ath10k_ce_init_dest_ring(struct ath10k *ar,
+				     unsigned int ce_id,
+				     const struct ce_attr *attr)
 {
 	struct ath10k_ce *ce = ath10k_ce_priv(ar);
 	struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
@@ -1427,8 +1425,6 @@  static int ath10k_ce_init_dest_ring(struct ath10k *ar,
 	ath10k_dbg(ar, ATH10K_DBG_BOOT,
 		   "boot ce dest ring id %d entries %d base_addr %pK\n",
 		   ce_id, nentries, dest_ring->base_addr_owner_space);
-
-	return 0;
 }
 
 static int ath10k_ce_alloc_shadow_base(struct ath10k *ar,
@@ -1659,30 +1655,14 @@  ath10k_ce_alloc_dest_ring_64(struct ath10k *ar, unsigned int ce_id,
  * initialization. It may be that only one side or the other is
  * initialized by software/firmware.
  */
-int ath10k_ce_init_pipe(struct ath10k *ar, unsigned int ce_id,
-			const struct ce_attr *attr)
+void ath10k_ce_init_pipe(struct ath10k *ar, unsigned int ce_id,
+			 const struct ce_attr *attr)
 {
-	int ret;
-
-	if (attr->src_nentries) {
-		ret = ath10k_ce_init_src_ring(ar, ce_id, attr);
-		if (ret) {
-			ath10k_err(ar, "Failed to initialize CE src ring for ID: %d (%d)\n",
-				   ce_id, ret);
-			return ret;
-		}
-	}
-
-	if (attr->dest_nentries) {
-		ret = ath10k_ce_init_dest_ring(ar, ce_id, attr);
-		if (ret) {
-			ath10k_err(ar, "Failed to initialize CE dest ring for ID: %d (%d)\n",
-				   ce_id, ret);
-			return ret;
-		}
-	}
+	if (attr->src_nentries)
+		ath10k_ce_init_src_ring(ar, ce_id, attr);
 
-	return 0;
+	if (attr->dest_nentries)
+		ath10k_ce_init_dest_ring(ar, ce_id, attr);
 }
 EXPORT_SYMBOL(ath10k_ce_init_pipe);
 
diff --git a/drivers/net/wireless/ath/ath10k/ce.h b/drivers/net/wireless/ath/ath10k/ce.h
index 666ce384a1d8..a0b408176f7f 100644
--- a/drivers/net/wireless/ath/ath10k/ce.h
+++ b/drivers/net/wireless/ath/ath10k/ce.h
@@ -220,8 +220,8 @@  int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
 
 /*==================CE Engine Initialization=======================*/
 
-int ath10k_ce_init_pipe(struct ath10k *ar, unsigned int ce_id,
-			const struct ce_attr *attr);
+void ath10k_ce_init_pipe(struct ath10k *ar, unsigned int ce_id,
+			 const struct ce_attr *attr);
 void ath10k_ce_deinit_pipe(struct ath10k *ar, unsigned int ce_id);
 int ath10k_ce_alloc_pipe(struct ath10k *ar, int ce_id,
 			 const struct ce_attr *attr);
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index a7f44f6335fb..f6988075cd83 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -2524,21 +2524,13 @@  void ath10k_pci_free_pipes(struct ath10k *ar)
 		ath10k_ce_free_pipe(ar, i);
 }
 
-int ath10k_pci_init_pipes(struct ath10k *ar)
+void ath10k_pci_init_pipes(struct ath10k *ar)
 {
 	struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
-	int i, ret;
-
-	for (i = 0; i < CE_COUNT; i++) {
-		ret = ath10k_ce_init_pipe(ar, i, &ar_pci->attr[i]);
-		if (ret) {
-			ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
-				   i, ret);
-			return ret;
-		}
-	}
+	int i;
 
-	return 0;
+	for (i = 0; i < CE_COUNT; i++)
+		ath10k_ce_init_pipe(ar, i, &ar_pci->attr[i]);
 }
 
 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
@@ -2703,12 +2695,7 @@  static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
 		 * sufficient to verify if device is capable of booting
 		 * firmware blob.
 		 */
-		ret = ath10k_pci_init_pipes(ar);
-		if (ret) {
-			ath10k_warn(ar, "failed to init copy engine: %d\n",
-				    ret);
-			continue;
-		}
+		ath10k_pci_init_pipes(ar);
 
 		ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
 					     &val);
@@ -2846,11 +2833,7 @@  static int ath10k_pci_hif_power_up(struct ath10k *ar,
 		goto err_sleep;
 	}
 
-	ret = ath10k_pci_init_pipes(ar);
-	if (ret) {
-		ath10k_err(ar, "failed to initialize CE: %d\n", ret);
-		goto err_sleep;
-	}
+	ath10k_pci_init_pipes(ar);
 
 	ret = ath10k_pci_init_config(ar);
 	if (ret) {
diff --git a/drivers/net/wireless/ath/ath10k/pci.h b/drivers/net/wireless/ath/ath10k/pci.h
index 480cd97ab739..3b3ded87aef9 100644
--- a/drivers/net/wireless/ath/ath10k/pci.h
+++ b/drivers/net/wireless/ath/ath10k/pci.h
@@ -238,7 +238,7 @@  void ath10k_pci_free_pipes(struct ath10k *ar);
 void ath10k_pci_rx_replenish_retry(struct timer_list *t);
 void ath10k_pci_ce_deinit(struct ath10k *ar);
 void ath10k_pci_init_napi(struct ath10k *ar);
-int ath10k_pci_init_pipes(struct ath10k *ar);
+void ath10k_pci_init_pipes(struct ath10k *ar);
 int ath10k_pci_init_config(struct ath10k *ar);
 void ath10k_pci_rx_post(struct ath10k *ar);
 void ath10k_pci_flush(struct ath10k *ar);
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index 26214c00cd0d..ff902413ede2 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -939,20 +939,12 @@  static int ath10k_snoc_hif_start(struct ath10k *ar)
 	return 0;
 }
 
-static int ath10k_snoc_init_pipes(struct ath10k *ar)
+static void ath10k_snoc_init_pipes(struct ath10k *ar)
 {
-	int i, ret;
-
-	for (i = 0; i < CE_COUNT; i++) {
-		ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
-		if (ret) {
-			ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
-				   i, ret);
-			return ret;
-		}
-	}
+	int i;
 
-	return 0;
+	for (i = 0; i < CE_COUNT; i++)
+		ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
 }
 
 static int ath10k_snoc_wlan_enable(struct ath10k *ar,
@@ -1084,11 +1076,7 @@  static int ath10k_snoc_hif_power_up(struct ath10k *ar,
 
 	ath10k_ce_alloc_rri(ar);
 
-	ret = ath10k_snoc_init_pipes(ar);
-	if (ret) {
-		ath10k_err(ar, "failed to initialize CE: %d\n", ret);
-		goto err_free_rri;
-	}
+	ath10k_snoc_init_pipes(ar);
 
 	return 0;