[PATCH 2/2] spi: stm32-ospi: Make usage of reset_control_acquire/release() API

[Patrice Chotard]

As ospi reset is consumed by both OMM and OSPI drivers, use the reset
acquire/release mechanism which ensure exclusive reset usage.

This avoid to call reset_control_get/put() in OMM driver each time
we need to reset OSPI children and guarantee the reset line stays
deasserted.

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---
 drivers/spi/spi-stm32-ospi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-stm32-ospi.c b/drivers/spi/spi-stm32-ospi.c
index 668022098b1eac3628f0677e6d786e5a267346be..96fa362432f13c19e4dde63d964a0db64c8ade95 100644
--- a/drivers/spi/spi-stm32-ospi.c
+++ b/drivers/spi/spi-stm32-ospi.c
@@ -804,7 +804,7 @@ static int stm32_ospi_get_resources(struct platform_device *pdev)
 		return ret;
 	}
 
-	ospi->rstc = devm_reset_control_array_get_optional_exclusive(dev);
+	ospi->rstc = devm_reset_control_array_get_exclusive_released(dev);
 	if (IS_ERR(ospi->rstc))
 		return dev_err_probe(dev, PTR_ERR(ospi->rstc),
 				     "Can't get reset\n");
@@ -937,9 +937,11 @@ static int stm32_ospi_probe(struct platform_device *pdev)
 		goto err_pm_enable;
 
 	if (ospi->rstc) {
+		reset_control_acquire(ospi->rstc);
 		reset_control_assert(ospi->rstc);
 		udelay(2);
 		reset_control_deassert(ospi->rstc);
+		reset_control_release(ospi->rstc);
 	}
 
 	ret = spi_register_controller(ctrl);

-- 
2.25.1