Merge branch 'net-aquantia-minor-bug-fixes-after-static-analysis'

Igor Russkikh says:

====================
net: aquantia: minor bug fixes after static analysis

This patchset fixes minor errors and warnings found by smatch and kasan.

Extra patch is to replace AQ_HW_WAIT_FOR with readx_poll_timeout
to improve readability.

V2:
use readx_poll
resubmitted to net-next since the changeset became quite big.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c

@@ -138,7 +138,7 @@ static void aq_ethtool_get_strings(struct net_device *ndev,
 	u8 *p = data;
 
 	if (stringset == ETH_SS_STATS) {
-		memcpy(p, *aq_ethtool_stat_names,
+		memcpy(p, aq_ethtool_stat_names,
 		       sizeof(aq_ethtool_stat_names));
 		p = p + sizeof(aq_ethtool_stat_names);
 		for (i = 0; i < cfg->vecs; i++) {

drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h

@@ -14,6 +14,8 @@
 #ifndef AQ_HW_UTILS_H
 #define AQ_HW_UTILS_H
 
+#include <linux/iopoll.h>
+
 #include "aq_common.h"
 
 #ifndef HIDWORD
@@ -23,18 +25,6 @@
 
 #define AQ_HW_SLEEP(_US_) mdelay(_US_)
 
-#define AQ_HW_WAIT_FOR(_B_, _US_, _N_) \
-do { \
-	unsigned int AQ_HW_WAIT_FOR_i; \
-	for (AQ_HW_WAIT_FOR_i = _N_; (!(_B_)) && (AQ_HW_WAIT_FOR_i);\
-	--AQ_HW_WAIT_FOR_i) {\
-		udelay(_US_); \
-	} \
-	if (!AQ_HW_WAIT_FOR_i) {\
-		err = -ETIME; \
-	} \
-} while (0)
-
 #define aq_pr_err(...) pr_err(AQ_CFG_DRV_NAME ": " __VA_ARGS__)
 #define aq_pr_trace(...) pr_info(AQ_CFG_DRV_NAME ": " __VA_ARGS__)
 

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -986,4 +986,4 @@ void aq_nic_shutdown(struct aq_nic_s *self)
 
 err_exit:
 	rtnl_unlock();
-}
+}

drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c

@@ -170,6 +170,8 @@ void aq_pci_func_free_irqs(struct aq_nic_s *self)
 	for (i = 32U; i--;) {
 		if (!((1U << i) & self->msix_entry_mask))
 			continue;
+		if (i >= AQ_CFG_VECS_MAX)
+			continue;
 
 		if (pdev->msix_enabled)
 			irq_set_affinity_hint(pci_irq_vector(pdev, i), NULL);

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c

@@ -85,6 +85,7 @@ const struct aq_hw_caps_s hw_atl_a0_caps_aqc109 = {
 static int hw_atl_a0_hw_reset(struct aq_hw_s *self)
 {
 	int err = 0;
+	u32 val;
 
 	hw_atl_glb_glb_reg_res_dis_set(self, 1U);
 	hw_atl_pci_pci_reg_res_dis_set(self, 0U);
@@ -95,15 +96,19 @@ static int hw_atl_a0_hw_reset(struct aq_hw_s *self)
 	hw_atl_glb_soft_res_set(self, 1);
 
 	/* check 10 times by 1ms */
-	AQ_HW_WAIT_FOR(hw_atl_glb_soft_res_get(self) == 0, 1000U, 10U);
+	err = readx_poll_timeout_atomic(hw_atl_glb_soft_res_get,
+					self, val, val == 0,
+					1000U, 10000U);
 	if (err < 0)
 		goto err_exit;
 
 	hw_atl_itr_irq_reg_res_dis_set(self, 0U);
 	hw_atl_itr_res_irq_set(self, 1U);
 
 	/* check 10 times by 1ms */
-	AQ_HW_WAIT_FOR(hw_atl_itr_res_irq_get(self) == 0, 1000U, 10U);
+	err = readx_poll_timeout_atomic(hw_atl_itr_res_irq_get,
+					self, val, val == 0,
+					1000U, 10000U);
 	if (err < 0)
 		goto err_exit;
 
@@ -181,15 +186,17 @@ static int hw_atl_a0_hw_rss_hash_set(struct aq_hw_s *self,
 	int err = 0;
 	unsigned int i = 0U;
 	unsigned int addr = 0U;
+	u32 val;
 
 	for (i = 10, addr = 0U; i--; ++addr) {
 		u32 key_data = cfg->is_rss ?
 			__swab32(rss_params->hash_secret_key[i]) : 0U;
 		hw_atl_rpf_rss_key_wr_data_set(self, key_data);
 		hw_atl_rpf_rss_key_addr_set(self, addr);
 		hw_atl_rpf_rss_key_wr_en_set(self, 1U);
-		AQ_HW_WAIT_FOR(hw_atl_rpf_rss_key_wr_en_get(self) == 0,
-			       1000U, 10U);
+		err = readx_poll_timeout_atomic(hw_atl_rpf_rss_key_wr_en_get,
+						self, val, val == 0,
+						1000U, 10000U);
 		if (err < 0)
 			goto err_exit;
 	}
@@ -207,8 +214,9 @@ static int hw_atl_a0_hw_rss_set(struct aq_hw_s *self,
 	u32 i = 0U;
 	u32 num_rss_queues = max(1U, self->aq_nic_cfg->num_rss_queues);
 	int err = 0;
-	u16 bitary[(HW_ATL_A0_RSS_REDIRECTION_MAX *
-					HW_ATL_A0_RSS_REDIRECTION_BITS / 16U)];
+	u16 bitary[1 + (HW_ATL_A0_RSS_REDIRECTION_MAX *
+		   HW_ATL_A0_RSS_REDIRECTION_BITS / 16U)];
+	u32 val;
 
 	memset(bitary, 0, sizeof(bitary));
 
@@ -222,8 +230,9 @@ static int hw_atl_a0_hw_rss_set(struct aq_hw_s *self,
 		hw_atl_rpf_rss_redir_tbl_wr_data_set(self, bitary[i]);
 		hw_atl_rpf_rss_redir_tbl_addr_set(self, i);
 		hw_atl_rpf_rss_redir_wr_en_set(self, 1U);
-		AQ_HW_WAIT_FOR(hw_atl_rpf_rss_redir_wr_en_get(self) == 0,
-			       1000U, 10U);
+		err = readx_poll_timeout_atomic(hw_atl_rpf_rss_redir_wr_en_get,
+						self, val, val == 0,
+						1000U, 10000U);
 		if (err < 0)
 			goto err_exit;
 	}

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

@@ -173,15 +173,17 @@ static int hw_atl_b0_hw_rss_hash_set(struct aq_hw_s *self,
 	int err = 0;
 	unsigned int i = 0U;
 	unsigned int addr = 0U;
+	u32 val;
 
 	for (i = 10, addr = 0U; i--; ++addr) {
 		u32 key_data = cfg->is_rss ?
 			__swab32(rss_params->hash_secret_key[i]) : 0U;
 		hw_atl_rpf_rss_key_wr_data_set(self, key_data);
 		hw_atl_rpf_rss_key_addr_set(self, addr);
 		hw_atl_rpf_rss_key_wr_en_set(self, 1U);
-		AQ_HW_WAIT_FOR(hw_atl_rpf_rss_key_wr_en_get(self) == 0,
-			       1000U, 10U);
+		err = readx_poll_timeout_atomic(hw_atl_rpf_rss_key_wr_en_get,
+						self, val, val == 0,
+						1000U, 10000U);
 		if (err < 0)
 			goto err_exit;
 	}
@@ -199,8 +201,9 @@ static int hw_atl_b0_hw_rss_set(struct aq_hw_s *self,
 	u32 i = 0U;
 	u32 num_rss_queues = max(1U, self->aq_nic_cfg->num_rss_queues);
 	int err = 0;
-	u16 bitary[(HW_ATL_B0_RSS_REDIRECTION_MAX *
-					HW_ATL_B0_RSS_REDIRECTION_BITS / 16U)];
+	u16 bitary[1 + (HW_ATL_B0_RSS_REDIRECTION_MAX *
+		   HW_ATL_B0_RSS_REDIRECTION_BITS / 16U)];
+	u32 val;
 
 	memset(bitary, 0, sizeof(bitary));
 
@@ -214,8 +217,9 @@ static int hw_atl_b0_hw_rss_set(struct aq_hw_s *self,
 		hw_atl_rpf_rss_redir_tbl_wr_data_set(self, bitary[i]);
 		hw_atl_rpf_rss_redir_tbl_addr_set(self, i);
 		hw_atl_rpf_rss_redir_wr_en_set(self, 1U);
-		AQ_HW_WAIT_FOR(hw_atl_rpf_rss_redir_wr_en_get(self) == 0,
-			       1000U, 10U);
+		err = readx_poll_timeout_atomic(hw_atl_rpf_rss_redir_wr_en_get,
+						self, val, val == 0,
+						1000U, 10000U);
 		if (err < 0)
 			goto err_exit;
 	}

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.c

@@ -1585,3 +1585,24 @@ void hw_atl_rpfl3l4_ipv6_dest_addr_set(struct aq_hw_s *aq_hw, u8 location,
 				HW_ATL_RPF_L3_DSTA_ADR(location + i),
 				ipv6_dest[i]);
 }
+
+u32 hw_atl_sem_ram_get(struct aq_hw_s *self)
+{
+	return hw_atl_reg_glb_cpu_sem_get(self, HW_ATL_FW_SM_RAM);
+}
+
+u32 hw_atl_scrpad_get(struct aq_hw_s *aq_hw, u32 scratch_scp)
+{
+	return aq_hw_read_reg(aq_hw,
+			      HW_ATL_GLB_CPU_SCRATCH_SCP_ADR(scratch_scp));
+}
+
+u32 hw_atl_scrpad12_get(struct aq_hw_s *self)
+{
+	return  hw_atl_scrpad_get(self, 0xB);
+}
+
+u32 hw_atl_scrpad25_get(struct aq_hw_s *self)
+{
+	return hw_atl_scrpad_get(self, 0x18);
+}

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh.h

@@ -752,4 +752,16 @@ void hw_atl_rpfl3l4_ipv6_src_addr_set(struct aq_hw_s *aq_hw, u8 location,
 void hw_atl_rpfl3l4_ipv6_dest_addr_set(struct aq_hw_s *aq_hw, u8 location,
 				       u32 *ipv6_dest);
 
+/* get global microprocessor ram semaphore */
+u32 hw_atl_sem_ram_get(struct aq_hw_s *self);
+
+/* get global microprocessor scratch pad register */
+u32 hw_atl_scrpad_get(struct aq_hw_s *aq_hw, u32 scratch_scp);
+
+/* get global microprocessor scratch pad 12 register */
+u32 hw_atl_scrpad12_get(struct aq_hw_s *self);
+
+/* get global microprocessor scratch pad 25 register */
+u32 hw_atl_scrpad25_get(struct aq_hw_s *self);
+
 #endif /* HW_ATL_LLH_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_llh_internal.h

@@ -2519,4 +2519,6 @@
 /* Default value of bitfield l3_da0[1F:0] */
 #define HW_ATL_RPF_L3_DSTA_DEFAULT 0x0
 
+#define HW_ATL_FW_SM_RAM        0x2U
+
 #endif /* HW_ATL_LLH_INTERNAL_H */