From: Matthias Blankertz matthias.blankertz@cetitec.com

[ Upstream commit 54cb6221688660670a2e430892d7f4e6370263b8 ]

Fix the rsnd_ssi_stop function to skip disabling the individual SSIs of a multi-SSI setup, as the actual stop is performed by rsnd_ssiu_stop_gen2 - the same logic as in rsnd_ssi_start. The attempt to disable these SSIs was harmless, but caused a "status check failed" message to be printed for every SSI in the multi-SSI setup. The disabling of interrupts is still performed, as they are enabled for all SSIs in rsnd_ssi_init, but care is taken to not accidentally set the EN bit for an SSI where it was not set by rsnd_ssi_start.

Signed-off-by: Matthias Blankertz matthias.blankertz@cetitec.com Acked-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Link: https://lore.kernel.org/r/20200417153017.1744454-3-matthias.blankertz@cetite... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/sh/rcar/ssi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 9900a4f6f4e53..4a7d3413917fc 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -594,10 +594,16 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod, * Capture: It might not receave data. Do nothing */ if (rsnd_io_is_play(io)) { - rsnd_mod_write(mod, SSICR, cr | EN); + rsnd_mod_write(mod, SSICR, cr | ssi->cr_en); rsnd_ssi_status_check(mod, DIRQ); }

+ /* In multi-SSI mode, stop is performed by setting ssi0129 in + * SSI_CONTROL to 0 (in rsnd_ssio_stop_gen2). Do nothing here. + */ + if (rsnd_ssi_multi_slaves_runtime(io)) + return 0; + /* * disable SSI, * and, wait idle state