patches.renesas/0067-ASoC-rsnd-don-t-use-devm_request_irq-for-SSI.patch

From bc1972c09bdc2bf1992bb1377c41d9ed745c8060 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Tue, 25 Oct 2016 00:36:34 +0000
Subject: [PATCH 067/299] ASoC: rsnd: don't use devm_request_irq() for SSI

SSI will use DMA mode, and migh be fallback to PIO mode.
Using devm_request_irq() makes its operation more complex when
it fallbacks to PIO mode.
Let's use manual request_irq()/free_irq()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 701172dca15ba9860ba73d3e18082fbd2a78f2c9)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 sound/soc/sh/rcar/ssi.c |   17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -644,10 +644,14 @@ static int rsnd_ssi_common_probe(struct
 	if (ret < 0)
 		return ret;
 
-	ret = devm_request_irq(dev, ssi->irq,
-			       rsnd_ssi_interrupt,
-			       IRQF_SHARED,
-			       dev_name(dev), mod);
+	/*
+	 * SSI might be called again as PIO fallback
+	 * It is easy to manual handling for IRQ request/free
+	 */
+	ret = request_irq(ssi->irq,
+			  rsnd_ssi_interrupt,
+			  IRQF_SHARED,
+			  dev_name(dev), mod);
 
 	return ret;
 }
@@ -693,12 +697,9 @@ static int rsnd_ssi_dma_remove(struct rs
 			       struct rsnd_priv *priv)
 {
 	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
-	struct device *dev = rsnd_priv_to_dev(priv);
-	int irq = ssi->irq;
 
 	/* PIO will request IRQ again */
-	if (ssi->dma)
-		devm_free_irq(dev, irq, mod);
+	free_irq(ssi->irq, mod);
 
 	rsnd_dma_detach(mod, &ssi->dma);