Merge "soc: qcom: bgcom: use pm_runtime_status_suspended of spi" (9e1c1825) · Commits · e / devices / android_kernel_xiaomi_nabu

drivers/soc/qcom/bgcom_spi.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -161,6 +161,10 @@ int bgcom_set_spi_state(enum bgcom_spi_state state)
		{
		struct bg_spi_priv *bg_spi = container_of(bg_com_drv,
		struct bg_spi_priv, lhandle);
		struct device spi_dev = bg_spi->spi->master->dev;
		ktime_t time_start, delta;
		s64 time_elapsed;

		if (state < 0 \|\| state > 1)
		return -EINVAL;

		@@ -168,6 +172,15 @@ int bgcom_set_spi_state(enum bgcom_spi_state state)
		return 0;

		mutex_lock(&bg_spi->xfer_mutex);
		if (state == BGCOM_SPI_BUSY) {
		time_start = ktime_get();
		while (!pm_runtime_status_suspended(spi_dev.parent)) {
		delta = ktime_sub(ktime_get(), time_start);
		time_elapsed = ktime_to_ms(delta);
		BUG_ON(time_elapsed > 5 * MSEC_PER_SEC);
		msleep(100);
		}
		}
		spi_state = state;
		mutex_unlock(&bg_spi->xfer_mutex);
		return 0;