From: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
A smbus quick transfer has no data after the address byte.
Signed-off-by: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
---
drivers/i2c/busses/i2c-bfin-twi.c | 18 +++++++-----------
1 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index d157105..02a8c86 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -158,18 +158,14 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
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;
}
--
1.7.0.2
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