Messages in this thread | | | Subject | Re: [PATCH] Revert "spi: spi-zynqmp-gqspi: add mutex locking for exec_op" | From | Quanyang Wang <> | Date | Wed, 15 Dec 2021 11:06:46 +0800 |
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On 12/14/21 7:01 PM, Tudor Ambarus wrote: > This reverts commit a0f65be6e880a14d3445b75e7dc03d7d015fc922. > > SPIMEM uses ctlr->bus_lock_mutex to prevent concurrency on > ctlr->mem_ops->exec_op(). > > Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Quanyang Wang <quanyang.wang@windriver.com> > --- > drivers/spi/spi-zynqmp-gqspi.c | 5 ----- > 1 file changed, 5 deletions(-) > > diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c > index 328b6559bb19..189fe4eb59ad 100644 > --- a/drivers/spi/spi-zynqmp-gqspi.c > +++ b/drivers/spi/spi-zynqmp-gqspi.c > @@ -174,7 +174,6 @@ struct zynqmp_qspi { > u32 genfifoentry; > enum mode_type mode; > struct completion data_completion; > - struct mutex op_lock; > }; > > /** > @@ -946,7 +945,6 @@ 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; > @@ -1069,7 +1067,6 @@ 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; > } > @@ -1143,8 +1140,6 @@ static int zynqmp_qspi_probe(struct platform_device *pdev) > > init_completion(&xqspi->data_completion); > > - 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); >
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