diff options
| author |   Kim, Milo <Milo.Kim@ti.com> | 2012-08-21 17:04:02 +0800 |
|---|---|---|
| committer |   Bryan Wu <bryan.wu@canonical.com> | 2012-09-11 18:32:41 +0800 |
| commit | 469eba023087d8fa3974827e6bedf874a620d0e7 (patch) | |
| tree | bf9ba0ac2ef5acb2e8be0d3f8dbc5b2245ce6d7d /drivers/leds/leds-lp5523.c | |
| parent | leds-lp5523: change the return type of lp5523_set_mode() (diff) | |
| download | linux-dev-469eba023087d8fa3974827e6bedf874a620d0e7.tar.xz linux-dev-469eba023087d8fa3974827e6bedf874a620d0e7.zip | |
leds-lp5523: minor code style fixes
(a) use LP5523_ENABLE rather than magic number 0x40
(b) use min_t() in lp5523_mux_parse()
(c) skip while loop and just return if invalid command
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Diffstat (limited to 'drivers/leds/leds-lp5523.c')
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index a14495402cc5..80d37929044f 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -177,7 +177,7 @@ static int lp5523_detect(struct i2c_client *client) int ret; u8 buf; - ret = lp5523_write(client, LP5523_REG_ENABLE, 0x40); + ret = lp5523_write(client, LP5523_REG_ENABLE, LP5523_ENABLE); if (ret) return ret; ret = lp5523_read(client, LP5523_REG_ENABLE, &buf); @@ -338,7 +338,8 @@ static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len) { int i; u16 tmp_mux = 0; - len = len < LP5523_LEDS ? len : LP5523_LEDS; + + len = min_t(int, len, LP5523_LEDS); for (i = 0; i < len; i++) { switch (buf[i]) { case '1': @@ -546,6 +547,9 @@ static int lp5523_do_store_load(struct lp5523_engine *engine, unsigned cmd; u8 pattern[LP5523_PROGRAM_LENGTH] = {0}; + if (engine->mode != LP5523_CMD_LOAD) + return -EINVAL; + while ((offset < len - 1) && (i < LP5523_PROGRAM_LENGTH)) { /* separate sscanfs because length is working only for %s */ ret = sscanf(buf + offset, "%2s%n ", c, &nrchars); @@ -563,12 +567,7 @@ static int lp5523_do_store_load(struct lp5523_engine *engine, goto fail; mutex_lock(&chip->lock); - - if (engine->mode == LP5523_CMD_LOAD) - ret = lp5523_load_program(engine, pattern); - else - ret = -EINVAL; - + ret = lp5523_load_program(engine, pattern); mutex_unlock(&chip->lock); if (ret) { |