linux-kernel - linux-next: build warning after merge of the bluetooth tree

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Message-ID: <20190318103025.12221d14@canb.auug.org.au>
Date:   Mon, 18 Mar 2019 10:30:25 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sean Wang <sean.wang@...iatek.com>
Subject: linux-next: build warning after merge of the bluetooth tree

Hi all,

After merging the bluetooth tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

drivers/bluetooth/btmtksdio.c: In function 'btmtksdio_interrupt':
drivers/bluetooth/btmtksdio.c:470:2: warning: 'old_len' may be used uninitialized in this function [-Wmaybe-uninitialized]
  print_hex_dump(KERN_ERR, "err sdio rx: ", DUMP_PREFIX_NONE, 4, 1,
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          old_data, old_len, true);
          ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/bluetooth/btmtksdio.c:376:15: note: 'old_len' was declared here
  unsigned int old_len;
               ^~~~~~~
drivers/bluetooth/btmtksdio.c:470:2: warning: 'old_data' may be used uninitialized in this function [-Wmaybe-uninitialized]
  print_hex_dump(KERN_ERR, "err sdio rx: ", DUMP_PREFIX_NONE, 4, 1,
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          old_data, old_len, true);
          ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/bluetooth/btmtksdio.c:375:17: note: 'old_data' was declared here
  unsigned char *old_data;
                 ^~~~~~~~

Introduced by commit

  d74eef2834b5 ("Bluetooth: mediatek: add support for MediaTek MT7663S and MT7668S SDIO")

-- 
Cheers,
Stephen Rothwell

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