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

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

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.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@arndb.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

[PATCH net-next 4/5] libertas: avoid -Wempty-body warning

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

Building without mesh supports shows a couple of warnings with
'make W=1':

drivers/net/wireless/marvell/libertas/main.c: In function 'lbs_start_card':
drivers/net/wireless/marvell/libertas/main.c:1068:37: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
 1068 |                 lbs_start_mesh(priv);

Change the macros to use the usual "do { } while (0)" instead to shut up
the warnings and make the code a litte more robust.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/wireless/marvell/libertas/mesh.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/marvell/libertas/mesh.h b/drivers/net/wireless/marvell/libertas/mesh.h
index d49717b20c09..44c4cd0230a8 100644
--- a/drivers/net/wireless/marvell/libertas/mesh.h
+++ b/drivers/net/wireless/marvell/libertas/mesh.h
@@ -60,13 +60,13 @@ void lbs_mesh_ethtool_get_strings(struct net_device *dev,
 
 #else
 
-#define lbs_init_mesh(priv)
-#define lbs_deinit_mesh(priv)
-#define lbs_start_mesh(priv)
-#define lbs_add_mesh(priv)
-#define lbs_remove_mesh(priv)
+#define lbs_init_mesh(priv)	do { } while (0)
+#define lbs_deinit_mesh(priv)	do { } while (0)
+#define lbs_start_mesh(priv)	do { } while (0)
+#define lbs_add_mesh(priv)	do { } while (0)
+#define lbs_remove_mesh(priv)	do { } while (0)
 #define lbs_mesh_set_dev(priv, dev, rxpd) (dev)
-#define lbs_mesh_set_txpd(priv, dev, txpd)
+#define lbs_mesh_set_txpd(priv, dev, txpd) do { } while (0)
 #define lbs_mesh_set_channel(priv, channel) (0)
 #define lbs_mesh_activated(priv) (false)
 
-- 
2.29.2

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

[Stanislaw Gruszka]

On Mon, Mar 22, 2021 at 11:43:33AM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.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@arndb.de>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>

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

[Kalle Valo]

Arnd Bergmann <arnd@kernel.org> wrote:

> From: Arnd Bergmann <arnd@arndb.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@arndb.de>
> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>

Patch applied to wireless-drivers-next.git, thanks.

fa9f5d0e0b45 iwlegacy: avoid -Wempty-body warning

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210322104343.948660-3-arnd@kernel.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH net-next 4/5] libertas: avoid -Wempty-body warning

[Kalle Valo]

Arnd Bergmann <arnd@kernel.org> wrote:

> From: Arnd Bergmann <arnd@arndb.de>
> 
> Building without mesh supports shows a couple of warnings with
> 'make W=1':
> 
> drivers/net/wireless/marvell/libertas/main.c: In function 'lbs_start_card':
> drivers/net/wireless/marvell/libertas/main.c:1068:37: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
>  1068 |                 lbs_start_mesh(priv);
> 
> Change the macros to use the usual "do { } while (0)" instead to shut up
> the warnings and make the code a litte more robust.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Patch applied to wireless-drivers-next.git, thanks.

01414f8882f9 libertas: avoid -Wempty-body warning

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210322104343.948660-4-arnd@kernel.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches