diff options
Diffstat (limited to 'drivers/mailbox/ti-msgmgr.c')
| -rw-r--r-- | drivers/mailbox/ti-msgmgr.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mailbox/ti-msgmgr.c b/drivers/mailbox/ti-msgmgr.c index ddac423ac1a9..03048cbda525 100644 --- a/drivers/mailbox/ti-msgmgr.c +++ b/drivers/mailbox/ti-msgmgr.c @@ -430,14 +430,20 @@ static int ti_msgmgr_send_data(struct mbox_chan *chan, void *data) /* Ensure all unused data is 0 */ data_trail &= 0xFFFFFFFF >> (8 * (sizeof(u32) - trail_bytes)); writel(data_trail, data_reg); - data_reg++; + data_reg += sizeof(u32); } + /* * 'data_reg' indicates next register to write. If we did not already * write on tx complete reg(last reg), we must do so for transmit + * In addition, we also need to make sure all intermediate data + * registers(if any required), are reset to 0 for TISCI backward + * compatibility to be maintained. */ - if (data_reg <= qinst->queue_buff_end) - writel(0, qinst->queue_buff_end); + while (data_reg <= qinst->queue_buff_end) { + writel(0, data_reg); + data_reg += sizeof(u32); + } /* If we are in polled mode, wait for a response before proceeding */ if (ti_msgmgr_chan_has_polled_queue_rx(message->chan_rx)) |