spi: add power control when set_cs (d948e6ca) · Commits · 戴 / test

As to set_cs takes effect immediately, power spi is needed when setup spi. Cc: Mark Brown <broonie@kernel.org> Signed-off-by:

drivers/spi/spi.c

+14 −1

Original line number	Diff line number	Diff line
		@@ -3261,7 +3261,20 @@ int spi_setup(struct spi_device *spi)
		if (spi->controller->setup)
		status = spi->controller->setup(spi);

		if (spi->controller->auto_runtime_pm && spi->controller->set_cs) {
		status = pm_runtime_get_sync(spi->controller->dev.parent);
		if (status < 0) {
		pm_runtime_put_noidle(spi->controller->dev.parent);
		dev_err(&spi->controller->dev, "Failed to power device: %d\n",
		status);
		return status;
		}
		spi_set_cs(spi, false);
		pm_runtime_mark_last_busy(spi->controller->dev.parent);
		pm_runtime_put_autosuspend(spi->controller->dev.parent);
		} else {
		spi_set_cs(spi, false);
		}

		if (spi->rt && !spi->controller->rt) {
		spi->controller->rt = true;