* [PATCH] misc: apds9802als: Fix checking timeout in als_wait_for_data_ready()
@ 2012-11-09 7:31 Axel Lin
0 siblings, 0 replies; only message in thread
From: Axel Lin @ 2012-11-09 7:31 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Anantha Narayanan, Alan Cox, Arnd Bergmann, linux-kernel
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>
---
drivers/misc/apds9802als.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/misc/apds9802als.c b/drivers/misc/apds9802als.c
index 0314773..94923d2 100644
--- a/drivers/misc/apds9802als.c
+++ b/drivers/misc/apds9802als.c
@@ -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;
}
--
1.7.9.5
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2012-11-09 7:31 [PATCH] misc: apds9802als: Fix checking timeout in als_wait_for_data_ready() Axel Lin
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