[PATCH v7 02/10] tpm: Get rid of devname

Stefan Berger
2016-03-12T02:51:24Z

From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>

Now that we have a proper struct device just use dev_name() to
access this value instead of keeping two copies.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
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>
---
drivers/char/tpm/tpm-chip.c | 18 +++++++++++-------
drivers/char/tpm/tpm.h | 1 -
drivers/char/tpm/tpm_eventlog.c | 2 +-
drivers/char/tpm/tpm_eventlog.h | 2 +-
drivers/char/tpm/tpm_i2c_nuvoton.c | 2 +-
drivers/char/tpm/tpm_tis.c | 2 +-
6 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 12829dd..c21d81c 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -111,7 +111,7 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,

set_bit(chip->dev_num, dev_mask);

- scnprintf(chip->devname, sizeof(chip->devname), "tpm%d", chip->dev_num);
+ device_initialize(&chip->dev);

dev_set_drvdata(dev, chip);

@@ -127,9 +127,9 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
else
chip->dev.devt = MKDEV(MAJOR(tpm_devt), chip->dev_num);

- dev_set_name(&chip->dev, "%s", chip->devname);
-
- device_initialize(&chip->dev);
+ rc = dev_set_name(&chip->dev, "tpm%d", chip->dev_num);
+ if (rc)
+ goto out;

cdev_init(&chip->cdev, &tpm_fops);
chip->cdev.owner = dev->driver->owner;
@@ -142,6 +142,10 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
}

return chip;
+
+out:
+ put_device(&chip->dev);
+ return ERR_PTR(rc);
}
EXPORT_SYMBOL_GPL(tpmm_chip_alloc);

@@ -153,7 +157,7 @@ static int tpm_add_char_device(struct tpm_chip *chip)
if (rc) {
dev_err(&chip->dev,
"unable to cdev_add() %s, major %d, minor %d, err=%d\n",
- chip->devname, MAJOR(chip->dev.devt),
+ dev_name(&chip->dev), MAJOR(chip->dev.devt),
MINOR(chip->dev.devt), rc);

return rc;
@@ -163,7 +167,7 @@ static int tpm_add_char_device(struct tpm_chip *chip)
if (rc) {
dev_err(&chip->dev,
"unable to device_register() %s, major %d, minor %d, err=%d\n",
- chip->devname, MAJOR(chip->dev.devt),
+ dev_name(&chip->dev), MAJOR(chip->dev.devt),
MINOR(chip->dev.devt), rc);

cdev_del(&chip->cdev);
@@ -190,7 +194,7 @@ static int tpm1_chip_register(struct tpm_chip *chip)
if (rc)
return rc;

- chip->bios_dir = tpm_bios_log_setup(chip->devname);
+ chip->bios_dir = tpm_bios_log_setup(dev_name(&chip->dev));

return 0;
}
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 9c9be6c..5d33ba5 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -174,7 +174,6 @@ struct tpm_chip {
unsigned int flags;

int dev_num; /* /dev/tpm# */
- char devname[7];
unsigned long is_open; /* only one allowed */
int time_expired;

diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c
index 4e6940a..e722886 100644
--- a/drivers/char/tpm/tpm_eventlog.c
+++ b/drivers/char/tpm/tpm_eventlog.c
@@ -403,7 +403,7 @@ static int is_bad(void *p)
return 0;
}

-struct dentry **tpm_bios_log_setup(char *name)
+struct dentry **tpm_bios_log_setup(const char *name)
{
struct dentry **ret = NULL, *tpm_dir, *bin_file, *ascii_file;

diff --git a/drivers/char/tpm/tpm_eventlog.h b/drivers/char/tpm/tpm_eventlog.h
index 267bfbd..cc9672f 100644
--- a/drivers/char/tpm/tpm_eventlog.h
+++ b/drivers/char/tpm/tpm_eventlog.h
@@ -77,7 +77,7 @@ int read_log(struct tpm_bios_log *log);

#if defined(CONFIG_TCG_IBMVTPM) || defined(CONFIG_TCG_IBMVTPM_MODULE) || \
defined(CONFIG_ACPI)
-extern struct dentry **tpm_bios_log_setup(char *);
+extern struct dentry **tpm_bios_log_setup(const char *);
extern void tpm_bios_log_teardown(struct dentry **);
#else
static inline struct dentry **tpm_bios_log_setup(char *name)
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index a1e1474..d61d43f 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -560,7 +560,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client,
rc = devm_request_irq(dev, chip->vendor.irq,
i2c_nuvoton_int_handler,
IRQF_TRIGGER_LOW,
- chip->devname,
+ dev_name(&chip->dev),
chip);
if (rc) {
dev_err(dev, "%s() Unable to request irq: %d for use\n",
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 0a9aee9..eed3bf5 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -577,7 +577,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
u8 original_int_vec;

if (devm_request_irq(&chip->dev, irq, tis_int_handler, flags,
- chip->devname, chip) != 0) {
+ dev_name(&chip->dev), chip) != 0) {
dev_info(&chip->dev, "Unable to request irq: %d for probe\n",
irq);
return -1;
--
2.4.3