spi: qup: call spi_qup_pm_resume_runtime before suspending

[ Upstream commit 136b5cd2e2f97581ae560cff0db2a3b5369112da ]

spi_qup_suspend() will cause synchronous external abort when
runtime suspend is enabled and applied, as it tries to
access SPI controller register while clock is already disabled
in spi_qup_pm_suspend_runtime().

Signed-off-by: Yuji sasaki <sasakiy@chromium.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200214074340.2286170-1-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 2f559e5..fa8079f 100644 (file)
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -1217,6 +1217,11 @@ static int spi_qup_suspend(struct device *device)
        struct spi_qup *controller = spi_master_get_devdata(master);
        int ret;
 
+       if (pm_runtime_suspended(device)) {
+               ret = spi_qup_pm_resume_runtime(device);
+               if (ret)
+                       return ret;
+       }
        ret = spi_master_suspend(master);
        if (ret)
                return ret;
@@ -1225,10 +1230,8 @@ static int spi_qup_suspend(struct device *device)
        if (ret)
                return ret;
 
-       if (!pm_runtime_suspended(device)) {
-               clk_disable_unprepare(controller->cclk);
-               clk_disable_unprepare(controller->iclk);
-       }
+       clk_disable_unprepare(controller->cclk);
+       clk_disable_unprepare(controller->iclk);
        return 0;
 }