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Subject[PATCH 1/1] drivers/misc: at2x: use devm_kzalloc() to make cleanup paths simpler
Date
From: Nikolay Balandin <nbalandin@dev.rtsoft.ru>

Signed-off-by: Nikolay Balandin <nbalandin@dev.rtsoft.ru>
---
drivers/misc/eeprom/at24.c | 15 +++++----------
drivers/misc/eeprom/at25.c | 5 ++---
2 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 2baeec5..e110662 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -553,7 +553,7 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
num_addresses = DIV_ROUND_UP(chip.byte_len,
(chip.flags & AT24_FLAG_ADDR16) ? 65536 : 256);

- at24 = kzalloc(sizeof(struct at24_data) +
+ at24 = devm_kzalloc(&client->dev, sizeof(struct at24_data) +
num_addresses * sizeof(struct i2c_client *), GFP_KERNEL);
if (!at24) {
err = -ENOMEM;
@@ -596,10 +596,12 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
at24->write_max = write_max;

/* buffer (data + address at the beginning) */
- at24->writebuf = kmalloc(write_max + 2, GFP_KERNEL);
+ at24->writebuf = devm_kzalloc(&client->dev,
+ write_max + 2, GFP_KERNEL);
+
if (!at24->writebuf) {
err = -ENOMEM;
- goto err_struct;
+ goto err_out;
}
} else {
dev_warn(&client->dev,
@@ -647,10 +649,6 @@ err_clients:
for (i = 1; i < num_addresses; i++)
if (at24->client[i])
i2c_unregister_device(at24->client[i]);
-
- kfree(at24->writebuf);
-err_struct:
- kfree(at24);
err_out:
dev_dbg(&client->dev, "probe error %d\n", err);
return err;
@@ -666,9 +664,6 @@ static int at24_remove(struct i2c_client *client)

for (i = 1; i < at24->num_addresses; i++)
i2c_unregister_device(at24->client[i]);
-
- kfree(at24->writebuf);
- kfree(at24);
return 0;
}

diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index ad8fd8e..f9d35c9 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -404,7 +404,8 @@ static int at25_probe(struct spi_device *spi)
goto fail;
}

- if (!(at25 = kzalloc(sizeof *at25, GFP_KERNEL))) {
+ at25 = devm_kzalloc(&spi->dev, sizeof(struct at25_data), GFP_KERNEL);
+ if (!at25) {
err = -ENOMEM;
goto fail;
}
@@ -455,7 +456,6 @@ static int at25_probe(struct spi_device *spi)
return 0;
fail:
dev_dbg(&spi->dev, "probe err %d\n", err);
- kfree(at25);
return err;
}

@@ -465,7 +465,6 @@ static int at25_remove(struct spi_device *spi)

at25 = spi_get_drvdata(spi);
sysfs_remove_bin_file(&spi->dev.kobj, &at25->bin);
- kfree(at25);
return 0;
}

--
1.7.9.5


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