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iio: light: isl29501: Simplify code to kill compiler warning

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With gcc 4.1.2:

    drivers/iio/proximity/isl29501.c: In function ‘isl29501_register_write’:
    drivers/iio/proximity/isl29501.c:235: warning: ‘msb’ may be used uninitialized in this function

While this is a false positive, it can easily be avoided by removing the
"msb" intermediate variable.
Remove the "lsb" intermediate variable for consistency.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Geert Uytterhoeven 2018-08-23 23:24:35 +02:00 committed by Jonathan Cameron
parent 8ba0dbfd07
commit 24493cce03
1 changed files with 2 additions and 10 deletions
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12
drivers/iio/proximity/isl29501.c
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@ -232,7 +232,6 @@ static u32 isl29501_register_write(struct isl29501_private *isl29501,
u32 value)
{
const struct isl29501_register_desc *reg = &isl29501_registers[name];
u8 msb, lsb;
int ret;
if (!reg->msb && value > U8_MAX)
@ -241,22 +240,15 @@ static u32 isl29501_register_write(struct isl29501_private *isl29501,
if (value > U16_MAX)
return -ERANGE;
if (!reg->msb) {
lsb = value & 0xFF;
} else {
msb = (value >> 8) & 0xFF;
lsb = value & 0xFF;
}
mutex_lock(&isl29501->lock);
if (reg->msb) {
ret = i2c_smbus_write_byte_data(isl29501->client,
reg->msb, msb);
reg->msb, value >> 8);
if (ret < 0)
goto err;
}
ret = i2c_smbus_write_byte_data(isl29501->client, reg->lsb, lsb);
ret = i2c_smbus_write_byte_data(isl29501->client, reg->lsb, value);
err:
mutex_unlock(&isl29501->lock);