dmaengine: rcar-dmac: Fix too early/late system suspend/resume callbacks

If serial console wake-up is enabled ("echo enabled >
/sys/.../ttySC0/power/wakeup"), and any serial input is received while
the system is suspended, serial port input no longer works after system
resume.

Note that:
  1) The system can still be woken up using the serial console,
  2) Serial port input keeps working if the system is woken up in some
     other way (e.g. Wake-on-LAN or gpio-keys), and no serial input was
     received while suspended.

To fix this, replace SET_LATE_SYSTEM_SLEEP_PM_OPS() by
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(), as the callbacks installed by the
former happen too early resp. late in the suspend resp. resume process.

Reported-by: RVC test team via Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Fixes: 1131b0a4af911de5 ("dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index c64f792e8e15a7065b0293ef2853a523c1b47adb..65538c0f4cfc277c9f6c9dac7913099942f0d471 100644 (file)
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1686,8 +1686,8 @@ static const struct dev_pm_ops rcar_dmac_pm = {
         *   - Wait for the current transfer to complete and stop the device,
         *   - Resume transfers, if any.
         */
-       SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-                                    pm_runtime_force_resume)
+       SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+                                     pm_runtime_force_resume)
        SET_RUNTIME_PM_OPS(rcar_dmac_runtime_suspend, rcar_dmac_runtime_resume,
                           NULL)
 };