[PATCH 4/8] i2c: i2c-bfin-twi: Tighten condition when failing I2C transfer if MEN bit is reset unexpectedly.

[<sonic.zhang@xxxxxxxxxx>]

From: Sonic Zhang <sonic.zhang@xxxxxxxxxx>

Correct I2C transfer may fail because interrupt status bits XMTSERV and
RCVSERV are not checked when MCOMP interrupt is handled.

Signed-off-by: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
---
 drivers/i2c/busses/i2c-bfin-twi.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 4abaf59..63fb84f 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -201,7 +201,8 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
 		return;
 	}
 	if (twi_int_status & MCOMP) {
-		if ((read_MASTER_CTL(iface) & MEN) == 0 &&
+		if (twi_int_status & (XMTSERV|RCVSERV) &&
+			(read_MASTER_CTL(iface) & MEN) == 0 &&
 			(iface->cur_mode == TWI_I2C_MODE_REPEAT ||
 			iface->cur_mode == TWI_I2C_MODE_COMBINED)) {
 			iface->result = -1;
-- 
1.7.0.4


--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html