ASoC: rsnd: fixup rsnd_ssi_master_clk_start() user count check

[ Upstream commit d9111d36024de07784f2e1ba2ccf70b16035f378 ]

commit 4d230d1271064 ("ASoC: rsnd: fixup not to call clk_get/set
under non-atomic") added new rsnd_ssi_prepare() and moved
rsnd_ssi_master_clk_start() to .prepare.
But, ssi user count (= ssi->usrcnt) is incremented at .init
(= rsnd_ssi_init()).
Because of these timing exchange, ssi->usrcnt check at
rsnd_ssi_master_clk_start() should be adjusted.
Otherwise, 2nd master clock setup will be no check.
This patch fixup this issue.

Fixes: commit 4d230d1271064 ("ASoC: rsnd: fixup not to call clk_get/set under non-atomic")
Reported-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Reported-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 0db2791f703503e5d10b9076d262a1ea69f6f3ca..60cc550c5a4ca083a755057aade3f329caf019ea 100644 (file)
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -280,7 +280,7 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod,
        if (rsnd_ssi_is_multi_slave(mod, io))
                return 0;
 
-       if (ssi->usrcnt > 1) {
+       if (ssi->usrcnt > 0) {
                if (ssi->rate != rate) {
                        dev_err(dev, "SSI parent/child should use same rate\n");
                        return -EINVAL;