diff options
author | Luck, Tony <tony.luck@intel.com> | 2013-04-04 21:37:00 (GMT) |
---|---|---|
committer | Jonathan Cameron <jic23@kernel.org> | 2013-04-09 17:29:02 (GMT) |
commit | 9f16778c5d0a32f264812a9bf1602b71613720b8 (patch) | |
tree | f1c4df120793e8f44e25f1b1246ffdd00dd692c8 /drivers/staging/iio/addac | |
parent | 5993f3a2692eed3c74c86882155b8703a0060ad5 (diff) | |
download | linux-9f16778c5d0a32f264812a9bf1602b71613720b8.tar.xz |
staging:iio:adt7316 Fix some 'interesting' string operations
Calling memcmp() to check the value of the first byte in a string is overkill.
Just use buf[0] == '1' or buf[0] != '1' as appropriate.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio/addac')
-rw-r--r-- | drivers/staging/iio/addac/adt7316.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c index 0b431bc..506b5a7 100644 --- a/drivers/staging/iio/addac/adt7316.c +++ b/drivers/staging/iio/addac/adt7316.c @@ -256,7 +256,7 @@ static ssize_t adt7316_store_enabled(struct device *dev, struct adt7316_chip_info *chip = iio_priv(dev_info); int enable; - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') enable = 1; else enable = 0; @@ -299,7 +299,7 @@ static ssize_t adt7316_store_select_ex_temp(struct device *dev, return -EPERM; config1 = chip->config1 & (~ADT7516_SEL_EX_TEMP); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config1 |= ADT7516_SEL_EX_TEMP; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1); @@ -495,7 +495,7 @@ static ssize_t adt7316_store_disable_averaging(struct device *dev, int ret; config2 = chip->config2 & (~ADT7316_DISABLE_AVERAGING); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config2 |= ADT7316_DISABLE_AVERAGING; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2); @@ -534,7 +534,7 @@ static ssize_t adt7316_store_enable_smbus_timeout(struct device *dev, int ret; config2 = chip->config2 & (~ADT7316_EN_SMBUS_TIMEOUT); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config2 |= ADT7316_EN_SMBUS_TIMEOUT; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2); @@ -597,7 +597,7 @@ static ssize_t adt7316_store_powerdown(struct device *dev, int ret; config1 = chip->config1 & (~ADT7316_PD); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config1 |= ADT7316_PD; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1); @@ -635,7 +635,7 @@ static ssize_t adt7316_store_fast_ad_clock(struct device *dev, int ret; config3 = chip->config3 & (~ADT7316_ADCLK_22_5); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config3 |= ADT7316_ADCLK_22_5; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3); @@ -681,7 +681,7 @@ static ssize_t adt7316_store_da_high_resolution(struct device *dev, chip->dac_bits = 8; - if (!memcmp(buf, "1", 1)) { + if (buf[0] == '1') { config3 = chip->config3 | ADT7316_DA_HIGH_RESOLUTION; if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516) chip->dac_bits = 12; @@ -731,7 +731,7 @@ static ssize_t adt7316_store_AIN_internal_Vref(struct device *dev, if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX) return -EPERM; - if (memcmp(buf, "1", 1)) + if (buf[0] != '1') config3 = chip->config3 & (~ADT7516_AIN_IN_VREF); else config3 = chip->config3 | ADT7516_AIN_IN_VREF; @@ -773,7 +773,7 @@ static ssize_t adt7316_store_enable_prop_DACA(struct device *dev, int ret; config3 = chip->config3 & (~ADT7316_EN_IN_TEMP_PROP_DACA); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config3 |= ADT7316_EN_IN_TEMP_PROP_DACA; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3); @@ -812,7 +812,7 @@ static ssize_t adt7316_store_enable_prop_DACB(struct device *dev, int ret; config3 = chip->config3 & (~ADT7316_EN_EX_TEMP_PROP_DACB); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config3 |= ADT7316_EN_EX_TEMP_PROP_DACB; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3); @@ -1018,7 +1018,7 @@ static ssize_t adt7316_store_DA_AB_Vref_bypass(struct device *dev, return -EPERM; dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') dac_config |= ADT7316_VREF_BYPASS_DAC_AB; ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config); @@ -1063,7 +1063,7 @@ static ssize_t adt7316_store_DA_CD_Vref_bypass(struct device *dev, return -EPERM; dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') dac_config |= ADT7316_VREF_BYPASS_DAC_CD; ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config); @@ -1982,7 +1982,7 @@ static ssize_t adt7316_set_int_enabled(struct device *dev, int ret; config1 = chip->config1 & (~ADT7316_INT_EN); - if (!memcmp(buf, "1", 1)) + if (buf[0] == '1') config1 |= ADT7316_INT_EN; ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1); |