linux-kernel - [PATCH net-next 3/5] iwlegacy: avoid -Wempty-body warning

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Message-Id: <20210322104343.948660-3-arnd@kernel.org>
Date:   Mon, 22 Mar 2021 11:43:33 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     netdev@...r.kernel.org, Stanislaw Gruszka <stf_xl@...pl>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Lee Jones <lee.jones@...aro.org>,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 3/5] iwlegacy: avoid -Wempty-body warning

From: Arnd Bergmann <arnd@...db.de>

There are a couple of warnings in this driver when building with W=1:

drivers/net/wireless/intel/iwlegacy/common.c: In function 'il_power_set_mode':
drivers/net/wireless/intel/iwlegacy/common.c:1195:60: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
 1195 |                                 il->chain_noise_data.state);
      |                                                            ^
drivers/net/wireless/intel/iwlegacy/common.c: In function 'il_do_scan_abort':
drivers/net/wireless/intel/iwlegacy/common.c:1343:57: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]

Change the empty debug macros to no_printk(), which avoids the
warnings and adds useful format string checks.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/wireless/intel/iwlegacy/3945-mac.c | 2 --
 drivers/net/wireless/intel/iwlegacy/common.c   | 2 --
 drivers/net/wireless/intel/iwlegacy/common.h   | 2 +-
 3 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlegacy/3945-mac.c b/drivers/net/wireless/intel/iwlegacy/3945-mac.c
index 4ca8212d4fa4..6ff2674f8466 100644
--- a/drivers/net/wireless/intel/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/intel/iwlegacy/3945-mac.c
@@ -751,9 +751,7 @@ il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb)
 static void
 il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb)
 {
-#ifdef CONFIG_IWLEGACY_DEBUG
 	struct il_rx_pkt *pkt = rxb_addr(rxb);
-#endif
 
 	D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status);
 }
diff --git a/drivers/net/wireless/intel/iwlegacy/common.c b/drivers/net/wireless/intel/iwlegacy/common.c
index 0651a6a416d1..219fed91cac5 100644
--- a/drivers/net/wireless/intel/iwlegacy/common.c
+++ b/drivers/net/wireless/intel/iwlegacy/common.c
@@ -1430,10 +1430,8 @@ static void
 il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb)
 {
 
-#ifdef CONFIG_IWLEGACY_DEBUG
 	struct il_rx_pkt *pkt = rxb_addr(rxb);
 	struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
-#endif
 
 	D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
 	       scan_notif->scanned_channels, scan_notif->tsf_low,
diff --git a/drivers/net/wireless/intel/iwlegacy/common.h b/drivers/net/wireless/intel/iwlegacy/common.h
index ea1b1bb7ddcb..40877ef1fbf2 100644
--- a/drivers/net/wireless/intel/iwlegacy/common.h
+++ b/drivers/net/wireless/intel/iwlegacy/common.h
@@ -2937,7 +2937,7 @@ do {									\
 } while (0)
 
 #else
-#define IL_DBG(level, fmt, args...)
+#define IL_DBG(level, fmt, args...) no_printk(fmt, ##args)
 static inline void
 il_print_hex_dump(struct il_priv *il, int level, const void *p, u32 len)
 {
-- 
2.29.2