diff options
Diffstat (limited to 'drivers/spi/spi-sh-msiof.c')
| -rw-r--r-- | drivers/spi/spi-sh-msiof.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 2cd5fcb86f71..e5894a65c797 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -575,11 +575,16 @@ static int sh_msiof_spi_txrx_once(struct sh_msiof_spi_priv *p, ret = sh_msiof_spi_start(p, rx_buf); if (ret) { dev_err(&p->pdev->dev, "failed to start hardware\n"); - goto err; + goto stop_ier; } /* wait for tx fifo to be emptied / rx fifo to be filled */ - wait_for_completion(&p->done); + ret = wait_for_completion_timeout(&p->done, HZ); + if (!ret) { + dev_err(&p->pdev->dev, "PIO timeout\n"); + ret = -ETIMEDOUT; + goto stop_reset; + } /* read rx fifo */ if (rx_buf) @@ -591,12 +596,15 @@ static int sh_msiof_spi_txrx_once(struct sh_msiof_spi_priv *p, ret = sh_msiof_spi_stop(p, rx_buf); if (ret) { dev_err(&p->pdev->dev, "failed to shut down hardware\n"); - goto err; + return ret; } return words; - err: +stop_reset: + sh_msiof_reset_str(p); + sh_msiof_spi_stop(p, rx_buf); +stop_ier: sh_msiof_write(p, IER, 0); return ret; } @@ -679,7 +687,7 @@ static int sh_msiof_transfer_one(struct spi_master *master, rx_buf, words, bits); if (n < 0) - break; + return n; bytes_done += n * bytes_per_word; words -= n; |