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

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Date:   Thu, 7 Sep 2017 12:31:32 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Colin Ian King <colin.king@...onical.com>
Subject: linux-next: build warning after merge of the tpmdd tree

Hi Jarkko,

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

drivers/char/tpm/tpm_tis_core.c: In function 'probe_itpm':
drivers/char/tpm/tpm_tis_core.c:469:31: warning: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  rc = tpm_tis_send_data(chip, cmd_getticks, len);
                               ^
drivers/char/tpm/tpm_tis_core.c:255:12: note: expected 'u8 * {aka unsigned char *}' but argument is of type 'const u8 * {aka const unsigned char *}'
 static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
            ^
drivers/char/tpm/tpm_tis_core.c:477:31: warning: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  rc = tpm_tis_send_data(chip, cmd_getticks, len);
                               ^
drivers/char/tpm/tpm_tis_core.c:255:12: note: expected 'u8 * {aka unsigned char *}' but argument is of type 'const u8 * {aka const unsigned char *}'
 static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
            ^

Introduced by commit

  5e35bd8e06b9 ("tpm_tis: make array cmd_getticks static const to shink object code size")

-- 
Cheers,
Stephen Rothwell