diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-15 12:52:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-15 12:52:42 -0800 |
| commit | e81d372ff9f694e13fa46e8b5aaed505c7fd2a1f (patch) | |
| tree | 058d5004b6ca7602aaec6ef2d992be9c71a8e81c /drivers/leds/leds-lp5523.c | |
| parent | 75e300c8ba5864367634d946c729d8fd05c1cbc2 (diff) | |
| parent | 2f05e1d4458f9cb68d4d36fb47e6830fec03c80e (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem update from Bryan Wu.
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (47 commits)
leds: leds-lp5521: return an error code on error in probe()
leds: leds-clevo-mail: Use pr_* instead of printks
leds: leds-rb532: Fix checkpatch errors
leds: led-triggers: Fix checkpatch warnings
leds: ledtrig-backlight: Fix checkpatch error
leds: leds-wrap: Use <linux/io.h> instead of <asm/io.h>
leds: leds-wm8350: Use dev_err instead of printk
leds: leds-pwm: Fix checkpatch warning
leds: leds-pca955x: Use dev_info instead of printk
leds: leds-net48xx: Use linux/io.h instead of asm/io.h
leds: leds-lt3593: Fix checkpatch warnings
leds: leds-gpio: Use dev_info instead of printk
leds: leds-da903x: Fix checkpatch error and warnings
leds: leds-bd2802: Fix checkpatch warnings
leds: leds-adp5520: Fix checkpatch warnings
leds: led-class: Fix checkpatch warning
leds: leds-ns2: use devm_gpio_request_one
leds: leds-lt3593: use devm_gpio_request_one
leds: leds-gpio: use devm_gpio_request_one
leds: lp3944: Fix return value
...
Diffstat (limited to 'drivers/leds/leds-lp5523.c')
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index 7e304b7ff779..7f5be8948cde 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -171,7 +171,7 @@ static int lp5523_read(struct i2c_client *client, u8 reg, u8 *buf) s32 ret = i2c_smbus_read_byte_data(client, reg); if (ret < 0) - return -EIO; + return ret; *buf = ret; return 0; @@ -248,7 +248,10 @@ static int lp5523_configure(struct i2c_client *client) /* Let the programs run for couple of ms and check the engine status */ usleep_range(3000, 6000); - lp5523_read(client, LP5523_REG_STATUS, &status); + ret = lp5523_read(client, LP5523_REG_STATUS, &status); + if (ret < 0) + return ret; + status &= LP5523_ENG_STATUS_MASK; if (status == LP5523_ENG_STATUS_MASK) { @@ -464,10 +467,16 @@ static ssize_t lp5523_selftest(struct device *dev, LP5523_EN_LEDTEST | 16); usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */ ret = lp5523_read(chip->client, LP5523_REG_STATUS, &status); + if (ret < 0) + goto fail; + if (!(status & LP5523_LEDTEST_DONE)) usleep_range(3000, 6000); /* Was not ready. Wait little bit */ - ret |= lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &vdd); + ret = lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &vdd); + if (ret < 0) + goto fail; + vdd--; /* There may be some fluctuation in measurement */ for (i = 0; i < LP5523_LEDS; i++) { @@ -489,9 +498,14 @@ static ssize_t lp5523_selftest(struct device *dev, /* ADC conversion time is 2.7 ms typically */ usleep_range(3000, 6000); ret = lp5523_read(chip->client, LP5523_REG_STATUS, &status); + if (ret < 0) + goto fail; + if (!(status & LP5523_LEDTEST_DONE)) usleep_range(3000, 6000);/* Was not ready. Wait. */ - ret |= lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &adc); + ret = lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &adc); + if (ret < 0) + goto fail; if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM) pos += sprintf(buf + pos, "LED %d FAIL\n", i); @@ -696,7 +710,7 @@ static ssize_t store_current(struct device *dev, ssize_t ret; unsigned long curr; - if (strict_strtoul(buf, 0, &curr)) + if (kstrtoul(buf, 0, &curr)) return -EINVAL; if (curr > led->max_current) |