diff options
Diffstat (limited to 'drivers/spi/spi-xilinx.c')
| -rw-r--r-- | drivers/spi/spi-xilinx.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 9f065d4e27d1..b95485710e2f 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -371,11 +371,18 @@ static int xilinx_spi_find_buffer_size(struct xilinx_spi *xspi) xspi->regs + XIPIF_V123B_RESETR_OFFSET); /* Fill the Tx FIFO with as many words as possible */ - do { + while (1) { xspi->write_fn(0, xspi->regs + XSPI_TXD_OFFSET); sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); + if (sr & XSPI_SR_TX_FULL_MASK) + break; + n_words++; - } while (!(sr & XSPI_SR_TX_FULL_MASK)); + } + + /* Handle the NO FIFO case separately */ + if (!n_words) + return 1; return n_words; } |