diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-03-29 19:53:32 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2018-04-04 08:54:05 +0300 |
| commit | 73dcc666d6bd0db56cd556010f93d8f04c1cc70c (patch) | |
| tree | 77582c98745098f472ad7578b28ca044b61e16ef /drivers/dma/sh | |
| parent | 3e081628d510b2ddbe493371d9c574d9275da17e (diff) | |
| download | linux-73dcc666d6bd0db56cd556010f93d8f04c1cc70c.tar.xz | |
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>
Diffstat (limited to 'drivers/dma/sh')
| -rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index c64f792e8e15..65538c0f4cfc 100644 --- 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) }; |