[PATCH 1/2] omap_hdq: Fix some error/debug handling.

From: NeilBrown
Date: Mon May 21 2012 - 19:44:18 EST


- some debug messages missed spaces
- sometimes no error was returned when it should have been
- sometimes a message is printed when there is no error, rather
than when there is one.

Acked-by: Evgeniy Polyakov <zbr@xxxxxxxxxxx>
Signed-off-by: NeilBrown <neilb@xxxxxxx>
---

drivers/w1/masters/omap_hdq.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/w1/masters/omap_hdq.c b/drivers/w1/masters/omap_hdq.c
index 5ef385b..3036b61 100644
--- a/drivers/w1/masters/omap_hdq.c
+++ b/drivers/w1/masters/omap_hdq.c
@@ -180,6 +180,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
hdq_data->hdq_irqstatus, OMAP_HDQ_TIMEOUT);
if (ret == 0) {
dev_dbg(hdq_data->dev, "TX wait elapsed\n");
+ ret = -ETIMEDOUT;
goto out;
}

@@ -187,7 +188,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
/* check irqstatus */
if (!(*status & OMAP_HDQ_INT_STATUS_TXCOMPLETE)) {
dev_dbg(hdq_data->dev, "timeout waiting for"
- "TXCOMPLETE/RXCOMPLETE, %x", *status);
+ " TXCOMPLETE/RXCOMPLETE, %x", *status);
ret = -ETIMEDOUT;
goto out;
}
@@ -198,7 +199,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
OMAP_HDQ_FLAG_CLEAR, &tmp_status);
if (ret) {
dev_dbg(hdq_data->dev, "timeout waiting GO bit"
- "return to zero, %x", tmp_status);
+ " return to zero, %x", tmp_status);
}

out:
@@ -341,7 +342,7 @@ static int omap_hdq_break(struct hdq_data *hdq_data)
&tmp_status);
if (ret)
dev_dbg(hdq_data->dev, "timeout waiting INIT&GO bits"
- "return to zero, %x", tmp_status);
+ " return to zero, %x", tmp_status);

out:
mutex_unlock(&hdq_data->hdq_mutex);
@@ -386,7 +387,7 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
/* check irqstatus */
if (!(status & OMAP_HDQ_INT_STATUS_RXCOMPLETE)) {
dev_dbg(hdq_data->dev, "timeout waiting for"
- "RXCOMPLETE, %x", status);
+ " RXCOMPLETE, %x", status);
ret = -ETIMEDOUT;
goto out;
}
@@ -396,7 +397,7 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
out:
mutex_unlock(&hdq_data->hdq_mutex);
rtn:
- return 0;
+ return ret;

}

@@ -470,7 +471,7 @@ static int omap_hdq_put(struct hdq_data *hdq_data)

if (0 == hdq_data->hdq_usecount) {
dev_dbg(hdq_data->dev, "attempt to decrement use count"
- "when it is zero");
+ " when it is zero");
ret = -EINVAL;
} else {
hdq_data->hdq_usecount--;
@@ -540,7 +541,7 @@ static void omap_w1_write_byte(void *_hdq, u8 byte)
mutex_unlock(&hdq_data->hdq_mutex);

ret = hdq_write_byte(hdq_data, byte, &status);
- if (ret == 0) {
+ if (ret < 0) {
dev_dbg(hdq_data->dev, "TX failure:Ctrl status %x\n", status);
return;
}


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