diff options
Diffstat (limited to 'drivers/spi/spi-zynqmp-gqspi.c')
| -rw-r--r-- | drivers/spi/spi-zynqmp-gqspi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c index d49ab6575553..3b39461d58b3 100644 --- a/drivers/spi/spi-zynqmp-gqspi.c +++ b/drivers/spi/spi-zynqmp-gqspi.c @@ -173,6 +173,7 @@ struct zynqmp_qspi { u32 genfifoentry; enum mode_type mode; struct completion data_completion; + struct mutex op_lock; }; /** @@ -951,6 +952,7 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem, op->cmd.opcode, op->cmd.buswidth, op->addr.buswidth, op->dummy.buswidth, op->data.buswidth); + mutex_lock(&xqspi->op_lock); zynqmp_qspi_config_op(xqspi, mem->spi); zynqmp_qspi_chipselect(mem->spi, false); genfifoentry |= xqspi->genfifocs; @@ -1084,6 +1086,7 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem, return_err: zynqmp_qspi_chipselect(mem->spi, true); + mutex_unlock(&xqspi->op_lock); return err; } @@ -1156,6 +1159,8 @@ static int zynqmp_qspi_probe(struct platform_device *pdev) goto clk_dis_pclk; } + mutex_init(&xqspi->op_lock); + pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_autosuspend_delay(&pdev->dev, SPI_AUTOSUSPEND_TIMEOUT); pm_runtime_set_active(&pdev->dev); |