[PATCH 08/15] eeprom: at24: fix device name handling

[Marco Felsch]

The nvmem_core already handles the ids/numbering, there is no need for
the driver to do it too. Furthermore it's wrong because the final device
would be: eeprom00 instead of eeprom0.

While on it fix the alias name handlng too since the device is never
named as described by the alias, but 'alias<ID>'. Since the
nvmem_core supports NVMEM_DEVID_{NONE,AUTO}, pass this information to
the core so the name would be: 'alias'.

Also while on it, make devname a 'const char *' pointer since the name is
allocated later on by the dev_set_name() during the nvmem_register()
call.

Signed-off-by: Marco Felsch <m.fel...@pengutronix.de>
---
 drivers/eeprom/at24.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/eeprom/at24.c b/drivers/eeprom/at24.c
index 
3054709ec055665a82b22c1b210a2bfc0910ca94..0a9aa75cf1dd63f6f97e90509b76e25d04ec361d
 100644
--- a/drivers/eeprom/at24.c
+++ b/drivers/eeprom/at24.c
@@ -371,7 +371,7 @@ static int at24_probe(struct device *dev)
        struct at24_data *at24;
        int err;
        unsigned i, num_addresses;
-       char *devname;
+       const char *devname;
        const char *alias;
 
        if (dev->platform_data) {
@@ -425,16 +425,10 @@ static int at24_probe(struct device *dev)
        at24->num_addresses = num_addresses;
 
        alias = of_alias_get(dev->of_node);
-       if (alias) {
-               devname = xstrdup(alias);
-       } else {
-               err = cdev_find_free_index("eeprom");
-               if (err < 0) {
-                       dev_err(&client->dev, "no index found to name 
device\n");
-                       goto err_device_name;
-               }
-               devname = xasprintf("eeprom%d", err);
-       }
+       if (alias)
+               devname = alias;
+       else
+               devname = "eeprom";
 
        writable = !(chip.flags & AT24_FLAG_READONLY);
 
@@ -489,6 +483,7 @@ static int at24_probe(struct device *dev)
        at24->nvmem_config.stride = 1;
        at24->nvmem_config.word_size = 1;
        at24->nvmem_config.size = chip.byte_len;
+       at24->nvmem_config.id = alias ? NVMEM_DEVID_NONE : NVMEM_DEVID_AUTO;
 
        at24->nvmem = nvmem_register(&at24->nvmem_config);
        err = PTR_ERR_OR_ZERO(at24->nvmem);
@@ -505,7 +500,6 @@ static int at24_probe(struct device *dev)
        if (gpio_is_valid(at24->wp_gpio))
                gpio_free(at24->wp_gpio);
        kfree(at24->writebuf);
-err_device_name:
        kfree(at24);
 err_out:
        dev_dbg(&client->dev, "probe error %d\n", err);

-- 
2.39.5