i2c-eg20t : Fix the issue of Combined R/W transfer mode
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>
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 9b072fd..ce1a32b7 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -673,7 +673,7 @@
/* 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 @@
mutex_unlock(&pch_mutex);
- return ret;
+ return (ret < 0) ? ret : num;
}
/**