commit df53bc38e90230ca68a0ce637a0214fb33cbfb35
author Mohan Pallaka <mpallaka@codeaurora.org> Tue Aug 09 15:37:33 2011 +0530
committer Bryan Huntsman <bryanh@codeaurora.org> Mon Oct 03 16:14:10 2011 -0700
tree 334e49da6d3cc7db25c0792ae7abade9e7a4c298
parent d1af38ebd5668744241487e4d8e5634d73370711

input: cy8c_ts: Clear status register in resume

To avoid firmware getting lock up after suspend
clear the status register in resume.

CRs-fixed: 300494
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>

drivers/input/touchscreen/cy8c_ts.c

diff --git a/drivers/input/touchscreen/cy8c_ts.c b/drivers/input/touchscreen/cy8c_ts.c
index 0b6406c..9b21582 100644
--- a/drivers/input/touchscreen/cy8c_ts.c
+++ b/drivers/input/touchscreen/cy8c_ts.c
@@ -499,6 +499,21 @@
 		}
 
 		enable_irq(ts->pen_irq);
+
+		/* Clear the status register of the TS controller */
+		rc = cy8c_ts_write_reg_u8(ts->client,
+			ts->dd->status_reg, ts->dd->update_data);
+		if (rc < 0) {
+			dev_err(&ts->client->dev,
+				"write failed, try once more\n");
+
+			rc = cy8c_ts_write_reg_u8(ts->client,
+				ts->dd->status_reg,
+				ts->dd->update_data);
+			if (rc < 0)
+				dev_err(&ts->client->dev,
+					"write failed, exiting\n");
+		}
 	}
 	return 0;
 err_gpio_free: