[PATCH RFC 2/2] OMAP : serial : Check for error in get_context_loss_count

[Shubhrajyoti D]

In serial_omap_runtime_resume in case of errors returned by
get_context_loss_count print a warning and do a restore.

Signed-off-by: Shubhrajyoti D <shubhrajyoti at ti.com>
---
applies on Tony's uart branch

 drivers/tty/serial/omap-serial.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 29fe6fd..6008612 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1602,10 +1602,16 @@ static int serial_omap_runtime_resume(struct device *dev)
 
 	if (up) {
 		if (pdata->get_context_loss_count) {
-			u32 loss_cnt = pdata->get_context_loss_count(dev);
+			int loss_cnt = pdata->get_context_loss_count(dev);
 
-			if (up->context_loss_cnt != loss_cnt)
+			if (loss_cnt < 0) {
+				dev_err(dev,
+					"get_context_loss_count failed : %d\n",
+					loss_cnt);
 				serial_omap_restore_context(up);
+			} else if (up->context_loss_cnt != loss_cnt) {
+				serial_omap_restore_context(up);
+			}
 		}
 
 		/* Errata i291 */
-- 
1.7.1