i2c-bfin-twi: return completion in interrupt for smbus quick transfers
A smbus quick transfer has no data after the address byte.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index dabfa80..fb26e5c 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -159,18 +159,14 @@
if (mast_stat & BUFWRERR)
dev_dbg(&iface->adap.dev, "Buffer Write Error\n");
- /* if both err and complete int stats are set, return proper
- * results.
+ /* If it is a quick transfer, only address without data,
+ * not an err, return 1.
*/
- if (twi_int_status & MCOMP) {
- /* If it is a quick transfer, only address without data,
- * not an err, return 1.
- * If address is acknowledged return 1.
- */
- if ((iface->writeNum == 0 && (mast_stat & BUFRDERR))
- || !(mast_stat & ANAK))
- iface->result = 1;
- }
+ if (iface->cur_mode == TWI_I2C_MODE_STANDARD &&
+ iface->transPtr == NULL &&
+ (twi_int_status & MCOMP) && (mast_stat & DNAK))
+ iface->result = 1;
+
complete(&iface->complete);
return;
}