linux-kernel - [PATCH v2 1/1] Bluetooth: make hci_test

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Message-Id: <1424355643-30660-1-git-send-email-jslaby@suse.cz>
Date:	Thu, 19 Feb 2015 15:20:43 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	johan.hedberg@...il.com
Cc:	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Slaby <jslaby@...e.cz>,
	Marcel Holtmann <marcel@...tmann.org>,
	Gustavo Padovan <gustavo@...ovan.org>
Subject: [PATCH v2 1/1] Bluetooth: make hci_test_bit's addr const

gcc5 warns about passing a const array to hci_test_bit which takes a
non-const pointer:
net/bluetooth/hci_sock.c: In function ‘hci_sock_sendmsg’:
net/bluetooth/hci_sock.c:955:8: warning: passing argument 2 of ‘hci_test_bit’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-array-qualifiers]
        &hci_sec_filter.ocf_mask[ogf])) &&
        ^
net/bluetooth/hci_sock.c:49:19: note: expected ‘void *’ but argument is of type ‘const __u32 (*)[4] {aka const unsigned int (*)[4]}’
 static inline int hci_test_bit(int nr, void *addr)
                   ^

So make 'addr' 'const void *'.

[v2] make the pointer in the cast const too. 

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Marcel Holtmann <marcel@...tmann.org>
Cc: Gustavo Padovan <gustavo@...ovan.org>
Cc: Johan Hedberg <johan.hedberg@...il.com>
---
 net/bluetooth/hci_sock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 1d65c5be7c82..d1a7d67619d8 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -46,9 +46,9 @@ struct hci_pinfo {
 	unsigned short    channel;
 };
 
-static inline int hci_test_bit(int nr, void *addr)
+static inline int hci_test_bit(int nr, const void *addr)
 {
-	return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));
+	return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));
 }
 
 /* Security filter */
-- 
2.3.0

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