spi: stm32-qspi: Fix pm_runtime management in stm32_qspi_transfer_one_message()

ctrl->auto_runtime_pm was wrongly set to true when adding
transfer_one_message() callback.
As explained in commit 6e6ccb3d4cdc ("spi: stm32-qspi: Add pm_runtime support")
the expected behavior is to prevent runtime suspends between each transfer.

Add needed pm_runtime API calls in stm32_qspi_transfer_one_message().

Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20220829123250.2170562-1-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index 679fd1c..227f450 100644 (file)
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -567,6 +567,10 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl,
        if (!spi->cs_gpiod)
                return -EOPNOTSUPP;
 
+       ret = pm_runtime_resume_and_get(qspi->dev);
+       if (ret < 0)
+               return ret;
+
        mutex_lock(&qspi->lock);
 
        gpiod_set_value_cansleep(spi->cs_gpiod, true);
@@ -629,6 +633,9 @@ end_of_transfer:
        msg->status = ret;
        spi_finalize_current_message(ctrl);
 
+       pm_runtime_mark_last_busy(qspi->dev);
+       pm_runtime_put_autosuspend(qspi->dev);
+
        return ret;
 }
 
@@ -847,7 +854,6 @@ static int stm32_qspi_probe(struct platform_device *pdev)
        ctrl->mem_ops = &stm32_qspi_mem_ops;
        ctrl->use_gpio_descriptors = true;
        ctrl->transfer_one_message = stm32_qspi_transfer_one_message;
-       ctrl->auto_runtime_pm = true;
        ctrl->num_chipselect = STM32_QSPI_MAX_NORCHIP;
        ctrl->dev.of_node = dev->of_node;