[PATCH] tpm: fix tpm_bios_log_setup stub prototype

From: Arnd Bergmann
Date: Wed Mar 16 2016 - 04:20:46 EST

A cleanup patch changed the prototype of the regular tpm_bios_log_setup
function, but not that of the stub that is used when the TPM is disabled,
causing a harmless build warning:

drivers/char/tpm/tpm-chip.c: In function 'tpm1_chip_register':
drivers/char/tpm/tpm-chip.c:287:38: error: passing argument 1 of 'tpm_bios_log_setup' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
chip->bios_dir = tpm_bios_log_setup(dev_name(&chip->dev));
In file included from ../drivers/char/tpm/tpm-chip.c:30:0:
../drivers/char/tpm/tpm_eventlog.h:83:31: note: expected 'char *' but argument is of type 'const char *'
static inline struct dentry **tpm_bios_log_setup(char *name)

This changes the stub function to match the normal prototype,
avoiding that warning.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: aca8db8088c3 ("tpm: Get rid of devname")
drivers/char/tpm/tpm_eventlog.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/tpm/tpm_eventlog.h b/drivers/char/tpm/tpm_eventlog.h
index cc9672f64e8f..8de62b09be51 100644
--- a/drivers/char/tpm/tpm_eventlog.h
+++ b/drivers/char/tpm/tpm_eventlog.h
@@ -80,7 +80,7 @@ int read_log(struct tpm_bios_log *log);
extern struct dentry **tpm_bios_log_setup(const char *);
extern void tpm_bios_log_teardown(struct dentry **);
-static inline struct dentry **tpm_bios_log_setup(char *name)
+static inline struct dentry **tpm_bios_log_setup(const char *name)
return NULL;