From: Moiz Sonasath <m-sonasath@ti.com>
Date: Thu, 20 Aug 2009 16:21:15 +0000 (-0500)
Subject: i2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts
X-Git-Tag: firefly_0821_release~13128^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dd11976aea15bde53ce40b076dd5fa462c74f41a;p=firefly-linux-kernel-4.4.55.git

i2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts

ACK any pending read/write interrupts before exiting the ISR either after
completing the operation [ARDY interrupt] or in case of an error
[NACK|AL interrupt]

Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 94639d0aabd5..16b39f470a7c 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -694,6 +694,9 @@ complete:
 		}
 		if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
 					OMAP_I2C_STAT_AL)) {
+			omap_i2c_ack_stat(dev, stat &
+				(OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
+				OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
 			omap_i2c_complete_cmd(dev, err);
 			return IRQ_HANDLED;
 		}