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author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2016-06-06 10:48:44 +0200 |
---|---|---|
committer | Wolfram Sang <wsa@the-dreams.de> | 2016-07-17 19:41:54 +0200 |
commit | d5bc0047986df1fe99805141650cc3d429499ecc (patch) | |
tree | d7d9606430e175de7f611380641d8950ce2388ab /drivers/misc/eeprom | |
parent | b0b9f7bf9d1b76bdc05f3ba4955f42ccb9fd461d (diff) | |
download | linux-d5bc0047986df1fe99805141650cc3d429499ecc.tar.gz linux-d5bc0047986df1fe99805141650cc3d429499ecc.tar.bz2 linux-d5bc0047986df1fe99805141650cc3d429499ecc.zip |
eeprom: at24: move at24_read() below at24_eeprom_write()
In preparation for splitting at24_eeprom_write() & at24_eeprom_read()
into smaller, specialized routines move at24_read() below, so that it
won't be intertwined with the low-level EEPROM accessors.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/misc/eeprom')
-rw-r--r-- | drivers/misc/eeprom/at24.c | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 411600de4a1b..e12d76fcbce6 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -249,38 +249,6 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf, return -ETIMEDOUT; } -static int at24_read(void *priv, unsigned int off, void *val, size_t count) -{ - struct at24_data *at24 = priv; - char *buf = val; - - if (unlikely(!count)) - return count; - - /* - * Read data from chip, protecting against concurrent updates - * from this host, but not from other I2C masters. - */ - mutex_lock(&at24->lock); - - while (count) { - int status; - - status = at24_eeprom_read(at24, buf, off, count); - if (status < 0) { - mutex_unlock(&at24->lock); - return status; - } - buf += status; - off += status; - count -= status; - } - - mutex_unlock(&at24->lock); - - return 0; -} - /* * Note that if the hardware write-protect pin is pulled high, the whole * chip is normally write protected. But there are plenty of product @@ -366,6 +334,38 @@ static ssize_t at24_eeprom_write(struct at24_data *at24, const char *buf, return -ETIMEDOUT; } +static int at24_read(void *priv, unsigned int off, void *val, size_t count) +{ + struct at24_data *at24 = priv; + char *buf = val; + + if (unlikely(!count)) + return count; + + /* + * Read data from chip, protecting against concurrent updates + * from this host, but not from other I2C masters. + */ + mutex_lock(&at24->lock); + + while (count) { + int status; + + status = at24_eeprom_read(at24, buf, off, count); + if (status < 0) { + mutex_unlock(&at24->lock); + return status; + } + buf += status; + off += status; + count -= status; + } + + mutex_unlock(&at24->lock); + + return 0; +} + static int at24_write(void *priv, unsigned int off, void *val, size_t count) { struct at24_data *at24 = priv; |