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authorSebastian Reichel <sre@kernel.org>2016-06-17 21:01:36 +0200
committerSebastian Reichel <sre@kernel.org>2016-06-28 00:39:26 +0200
commit927d3f8f73217fb19c28496321510335176955de (patch)
treeffcb72e224c81997a89fb98a6dd16c16b91a28e8 /drivers/hsi
parentea88f717cdbe94e60bf2b0082648453cf2401ffc (diff)
HSI: omap_ssi_core: remove pm_runtime_get_sync call from tasklet
We may not call pm_runtime_get_sync() from tasklet, since it can block once pm_runtime_irq_safe is removed for omap-ssi. Since irq can should only be created for a running device, we assume, that the device is already running and use non- synchronous API instead. Signed-off-by: Sebastian Reichel <sre@kernel.org> Tested-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/hsi')
-rw-r--r--drivers/hsi/controllers/omap_ssi_core.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/hsi/controllers/omap_ssi_core.c b/drivers/hsi/controllers/omap_ssi_core.c
index 618db80577c3..79562ce65579 100644
--- a/drivers/hsi/controllers/omap_ssi_core.c
+++ b/drivers/hsi/controllers/omap_ssi_core.c
@@ -255,7 +255,13 @@ static void ssi_gdd_tasklet(unsigned long dev)
unsigned int lch;
u32 status_reg;
- pm_runtime_get_sync(ssi->device.parent);
+ pm_runtime_get(ssi->device.parent);
+
+ if (!pm_runtime_active(ssi->device.parent)) {
+ dev_warn(ssi->device.parent, "ssi_gdd_tasklet called without runtime PM!\n");
+ pm_runtime_put(ssi->device.parent);
+ return;
+ }
status_reg = readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG);
for (lch = 0; lch < SSI_MAX_GDD_LCH; lch++) {

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