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misc: apds9802als: Fix the logic checking timeout in als_wait_for_data_ready() 

In the case of timeout waiting for data ready, the retry variable is -1.
This also fixes a bug: current code returns -ETIMEDOUT if latest retry success
( which means retry is 0 when exiting the while loop ).

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Axel Lin 2012-11-16 17:17:50 +08:00 committed by Greg Kroah-Hartman
parent ebf1b764aa
commit 644a9d3b66
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/apds9802als.c
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@ -68,7 +68,7 @@ static int als_wait_for_data_ready(struct device *dev)
ret = i2c_smbus_read_byte_data(client, 0x86);
} while (!(ret & 0x80) && retry--);
if (!retry) {
if (retry < 0) {
dev_warn(dev, "timeout waiting for data ready\n");
return -ETIMEDOUT;
}