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authorSebastian Reichel <sre@kernel.org>2016-06-17 22:03:00 +0200
committerSebastian Reichel <sre@kernel.org>2016-06-28 00:39:39 +0200
commitfa1572d956ee072e965da01d2c46f10d2b67d017 (patch)
tree82933ab359e14e31cbd269cadfe4b680828ceaa5 /drivers/hsi
parent62aa292b3eae920a80c2fd0ed0601a70328627f6 (diff)
HSI: omap_ssi_port: avoid calling runtime_pm_*_sync inside spinlock
runtime_pm_*_sync can block when irq_safe flag is removed from omap-ssi driver, so it may not be called while a spinlock is held. 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_port.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c
index f7ed59ba3b2c..92064221dbab 100644
--- a/drivers/hsi/controllers/omap_ssi_port.c
+++ b/drivers/hsi/controllers/omap_ssi_port.c
@@ -767,13 +767,12 @@ static int ssi_release(struct hsi_client *cl)
struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
struct hsi_controller *ssi = to_hsi_controller(port->device.parent);
- spin_lock_bh(&omap_port->lock);
pm_runtime_get_sync(omap_port->pdev);
+ spin_lock_bh(&omap_port->lock);
/* Stop all the pending DMA requests for that client */
ssi_cleanup_gdd(ssi, cl);
/* Now cleanup all the queues */
ssi_cleanup_queues(cl);
- pm_runtime_put_sync(omap_port->pdev);
/* If it is the last client of the port, do extra checks and cleanup */
if (port->claimed <= 1) {
/*
@@ -782,15 +781,16 @@ static int ssi_release(struct hsi_client *cl)
*/
if (test_and_clear_bit(SSI_WAKE_EN, &omap_port->flags))
pm_runtime_put_sync(omap_port->pdev);
- pm_runtime_get_sync(omap_port->pdev);
+ pm_runtime_get(omap_port->pdev);
/* Stop any SSI TX/RX without a client */
ssi_set_port_mode(omap_port, SSI_MODE_SLEEP);
omap_port->sst.mode = SSI_MODE_SLEEP;
omap_port->ssr.mode = SSI_MODE_SLEEP;
- pm_runtime_put_sync(omap_port->pdev);
+ pm_runtime_put(omap_port->pdev);
WARN_ON(omap_port->wk_refcount != 0);
}
spin_unlock_bh(&omap_port->lock);
+ pm_runtime_put_sync(omap_port->pdev);
return 0;
}

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