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i2c-eg20t : Fix the issue of Combined R/W transfer mode

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issue-1
In case combined transfer mode fails halfway, the processing must be stopped halfway.
However currently, the processing is continued.
This patch breaks the processing.

issue-2
Currently, pch_i2c_xfer returns read/write size at that time.
However pch_i2c_xfer must return the number of messages to be read/written.
This patch modifies correctly.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Tomoya MORINAGA 2011-06-23 16:17:10 +09:00 committed by Ben Dooks
parent 7a9c42ccc9
commit 07e729ce89
1 changed files with 2 additions and 2 deletions
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4
drivers/i2c/busses/i2c-eg20t.c
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@ -673,7 +673,7 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
/* transfer not completed */
adap->pch_i2c_xfer_in_progress = true;
for (i = 0; i < num; i++) {
for (i = 0; i < num && ret >= 0; i++) {
pmsg = &msgs[i];
pmsg->flags |= adap->pch_buff_mode_en;
status = pmsg->flags;
@ -699,7 +699,7 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
mutex_unlock(&pch_mutex);
return ret;
return (ret < 0) ? ret : num;
}
/**