ASoC: mxs-saif: check BUSY bit in hw_params() only if not mclk_in_use

If something else, typically a codec, has enabled mclk, the BUSY
bit may be set when hw_params() is called without this being an
error. This check thus causes intermittent failures to configure
the sound device when used in such a manner. Fix this by making
the test conditional on !saif->mclk_in_use.

Signed-off-by: Mans Rullgard <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/mxs/mxs-saif.c

···
 	}
 
 	stat = __raw_readl(saif->base + SAIF_STAT);
-	if (stat & BM_SAIF_STAT_BUSY) {
+	if (!saif->mclk_in_use && (stat & BM_SAIF_STAT_BUSY)) {
 		dev_err(cpu_dai->dev, "error: busy\n");
 		return -EBUSY;
 	}