diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/xilinx_hwicap/xilinx_hwicap.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c index 304727deaf3..5b8d6463e11 100644 --- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c +++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c @@ -250,8 +250,26 @@ static int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata, * Create the data to be written to the ICAP. */ buffer[index++] = XHI_DUMMY_PACKET; + buffer[index++] = XHI_NOOP_PACKET; buffer[index++] = XHI_SYNC_PACKET; buffer[index++] = XHI_NOOP_PACKET; + buffer[index++] = XHI_NOOP_PACKET; + + /* + * Write the data to the FIFO and initiate the transfer of data present + * in the FIFO to the ICAP device. + */ + status = drvdata->config->set_configuration(drvdata, + &buffer[0], index); + if (status) + return status; + + /* If the syncword was not found, then we need to start over. */ + status = drvdata->config->get_status(drvdata); + if ((status & XHI_SR_DALIGN_MASK) != XHI_SR_DALIGN_MASK) + return -EIO; + + index = 0; buffer[index++] = hwicap_type_1_read(reg) | 1; buffer[index++] = XHI_NOOP_PACKET; buffer[index++] = XHI_NOOP_PACKET; |