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Date:   Wed,  2 Sep 2020 22:05:06 +0900
From:   Leesoo Ahn <dev@...eel.net>
To:     dev@...eel.net
Cc:     Stanislaw Gruszka <stf_xl@...pl>,
        Helmut Schaa <helmut.schaa@...glemail.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] rt2x00: Use fallthrough pseudo-keyword macro

Replace all '/* fall through */' comments with the macro[1].

[1]: https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Leesoo Ahn <dev@...eel.net>
---
 .../net/wireless/ralink/rt2x00/rt2400pci.c    |  3 ++-
 .../net/wireless/ralink/rt2x00/rt2500pci.c    |  3 ++-
 .../net/wireless/ralink/rt2x00/rt2800lib.c    | 27 ++++++++++---------
 drivers/net/wireless/ralink/rt2x00/rt61pci.c  |  3 ++-
 4 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
index c1ac933349d1..2eb06ffd20cd 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
@@ -1291,7 +1291,8 @@ static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
 			break;
 		case 2: /* Failure, excessive retries */
 			__set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags);
-			/* Fall through - this is a failed frame! */
+			/* this is a failed frame! */
+			fallthrough;
 		default: /* Failure */
 			__set_bit(TXDONE_FAILURE, &txdesc.flags);
 		}
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
index 0859adebd860..44c489a8891b 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
@@ -1419,7 +1419,8 @@ static void rt2500pci_txdone(struct rt2x00_dev *rt2x00dev,
 			break;
 		case 2: /* Failure, excessive retries */
 			__set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags);
-			/* Fall through - this is a failed frame! */
+			/* this is a failed frame! */
+			fallthrough;
 		default: /* Failure */
 			__set_bit(TXDONE_FAILURE, &txdesc.flags);
 		}
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index a779fe771a55..cbba7b3a0e1a 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -928,7 +928,7 @@ static void rt2800_rate_from_status(struct skb_frame_desc *skbdesc,
 	switch (rt2x00_get_field32(status, TX_STA_FIFO_PHYMODE)) {
 	case RATE_MODE_HT_GREENFIELD:
 		flags |= IEEE80211_TX_RC_GREEN_FIELD;
-		/* fall through */
+		fallthrough;
 	case RATE_MODE_HT_MIX:
 		flags |= IEEE80211_TX_RC_MCS;
 		break;
@@ -2037,6 +2037,7 @@ static void rt2800_config_ht_opmode(struct rt2x00_dev *rt2x00dev,
 		 * We decide to protect everything
 		 * -> fall through to mixed mode.
 		 */
+		fallthrough;
 	case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
 		/*
 		 * Legacy STAs are present
@@ -2567,7 +2568,7 @@ static void rt2800_config_channel_rf3052(struct rt2x00_dev *rt2x00dev,
 		switch (rt2x00dev->default_ant.tx_chain_num) {
 		case 1:
 			rt2x00_set_field8(&rfcsr, RFCSR1_TX1_PD, 1);
-			/* fall through */
+			fallthrough;
 		case 2:
 			rt2x00_set_field8(&rfcsr, RFCSR1_TX2_PD, 1);
 			break;
@@ -2576,7 +2577,7 @@ static void rt2800_config_channel_rf3052(struct rt2x00_dev *rt2x00dev,
 		switch (rt2x00dev->default_ant.rx_chain_num) {
 		case 1:
 			rt2x00_set_field8(&rfcsr, RFCSR1_RX1_PD, 1);
-			/* fall through */
+			fallthrough;
 		case 2:
 			rt2x00_set_field8(&rfcsr, RFCSR1_RX2_PD, 1);
 			break;
@@ -4216,14 +4217,14 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
 				   rf->channel > 14);
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G2_EN,
 				   rf->channel <= 14);
-		/* fall-through */
+		fallthrough;
 	case 2:
 		/* Turn on secondary PAs */
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A1_EN,
 				   rf->channel > 14);
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G1_EN,
 				   rf->channel <= 14);
-		/* fall-through */
+		fallthrough;
 	case 1:
 		/* Turn on primary PAs */
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A0_EN,
@@ -4241,12 +4242,12 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
 		/* Turn on tertiary LNAs */
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN, 1);
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN, 1);
-		/* fall-through */
+		fallthrough;
 	case 2:
 		/* Turn on secondary LNAs */
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1);
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1);
-		/* fall-through */
+		fallthrough;
 	case 1:
 		/* Turn on primary LNAs */
 		rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, 1);
@@ -5438,10 +5439,10 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
 		switch (rt2x00dev->default_ant.tx_chain_num) {
 		case 3:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G2_EN, 1);
-			/* fall through */
+			fallthrough;
 		case 2:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G1_EN, 1);
-			/* fall through */
+			fallthrough;
 		case 1:
 		default:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_G0_EN, 1);
@@ -5451,10 +5452,10 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
 		switch (rt2x00dev->default_ant.tx_chain_num) {
 		case 3:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A2_EN, 1);
-			/* fall through */
+			fallthrough;
 		case 2:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A1_EN, 1);
-			/* fall through */
+			fallthrough;
 		case 1:
 		default:
 			rt2x00_set_field32(&tx_pin, TX_PIN_CFG_PA_PE_A0_EN, 1);
@@ -10100,10 +10101,10 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	switch (rx_chains) {
 	case 3:
 		spec->ht.mcs.rx_mask[2] = 0xff;
-		/* fall through */
+		fallthrough;
 	case 2:
 		spec->ht.mcs.rx_mask[1] = 0xff;
-		/* fall through */
+		fallthrough;
 	case 1:
 		spec->ht.mcs.rx_mask[0] = 0xff;
 		spec->ht.mcs.rx_mask[4] = 0x1; /* MCS32 */
diff --git a/drivers/net/wireless/ralink/rt2x00/rt61pci.c b/drivers/net/wireless/ralink/rt2x00/rt61pci.c
index eefce76fc99b..16ec523375e2 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt61pci.c
@@ -2130,7 +2130,8 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
 			break;
 		case 6: /* Failure, excessive retries */
 			__set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags);
-			/* Fall through - this is a failed frame! */
+			/* this is a failed frame! */
+			fallthrough;
 		default: /* Failure */
 			__set_bit(TXDONE_FAILURE, &txdesc.flags);
 		}
-- 
2.25.4

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