diff mbox

brcmfmac: avoid gcc-5.1 warning

Message ID 2201884.BixNBcLJhn@wuerfel (mailing list archive)
State Accepted
Delegated to: Kalle Valo
Headers show

Commit Message

Arnd Bergmann May 12, 2015, 9:54 p.m. UTC
gcc-5.0 gained a new warning in the fwsignal portion of the brcmfmac
driver:

drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c: In function 'brcmf_fws_txs_process':
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c:1478:8: warning: 'skb' may be used uninitialized in this function [-Wmaybe-uninitialized]

This is a false positive, and marking the brcmf_fws_hanger_poppkt function
as 'static inline' makes the warning go away. I have checked the object
file output and while a little code gets moved around, the size of
the binary remains identical.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
Found while building the ARM imx_v6_v7_defconfig configuration with gcc-5.
We try to get all ARM defconfigs to build without warnings normally.


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Comments

Kalle Valo May 26, 2015, 10:54 a.m. UTC | #1
> gcc-5.0 gained a new warning in the fwsignal portion of the brcmfmac
> driver:
> 
> drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c: In function 'brcmf_fws_txs_process':
> drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c:1478:8: warning: 'skb' may be used uninitialized in this function [-Wmaybe-uninitialized]
> 
> This is a false positive, and marking the brcmf_fws_hanger_poppkt function
> as 'static inline' makes the warning go away. I have checked the object
> file output and while a little code gets moved around, the size of
> the binary remains identical.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Thanks, applied to wireless-drivers-next.git.

Kalle Valo
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diff mbox

Patch

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index f0dda0ecd23b..5017eaa4af45 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -635,7 +635,7 @@  static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
 	return 0;
 }
 
-static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
+static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
 					  u32 slot_id, struct sk_buff **pktout,
 					  bool remove_item)
 {