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Making cmd_getticks 'const' introduced a couple of harmless warnings:
drivers/char/tpm/tpm_tis_core.c: In function 'probe_itpm':
drivers/char/tpm/tpm_tis_core.c:469:31: error: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
rc = tpm_tis_send_data(chip, cmd_getticks, len);
drivers/char/tpm/tpm_tis_core.c:477:31: error: passing argument 2 of 'tpm_tis_send_data' discards 'const' qualifier from pointer target type [-Werror=discarded-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)
This changes the related functions to all take 'const' pointers
so that gcc can see this as being correct. I had to slightly
modify the logic around tpm_tis_spi_transfer() for this to work
without introducing ugly casts.
Cc: stable@vger.kernel.org
Fixes: 5e35bd8e06b9 ("tpm_tis: make array cmd_getticks static const to shink object code size")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
c37fbc09bd