change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/staging/comedi/drivers/mite.c
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@@ -371,7 +371,6 @@
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 		writel(CHOR_CLRDONE,
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 		       mite->mmio + MITE_CHOR(mite_chan->channel));
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 	}
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-	mmiowb();
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 	spin_unlock_irqrestore(&mite->lock, flags);
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 	return status;
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 }
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@@ -451,7 +450,6 @@
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 	mite_chan->done = 0;
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 	/* arm */
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 	writel(CHOR_START, mite->mmio + MITE_CHOR(mite_chan->channel));
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-	mmiowb();
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 	spin_unlock_irqrestore(&mite->lock, flags);
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 }
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 EXPORT_SYMBOL_GPL(mite_dma_arm);
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@@ -560,7 +558,14 @@
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 }
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 EXPORT_SYMBOL_GPL(mite_prep_dma);
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-static struct mite_channel *__mite_request_channel(struct mite *mite,
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+/**
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+ * mite_request_channel_in_range() - Request a MITE dma channel.
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+ * @mite: MITE device.
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+ * @ring: MITE dma ring.
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+ * @min_channel: minimum channel index to use.
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+ * @max_channel: maximum channel index to use.
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+ */
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+struct mite_channel *mite_request_channel_in_range(struct mite *mite,
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 						   struct mite_ring *ring,
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 						   unsigned int min_channel,
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 						   unsigned int max_channel)
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@@ -585,21 +590,6 @@
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 	spin_unlock_irqrestore(&mite->lock, flags);
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 	return mite_chan;
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 }
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-
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-/**
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- * mite_request_channel_in_range() - Request a MITE dma channel.
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- * @mite: MITE device.
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- * @ring: MITE dma ring.
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- * @min_channel: minimum channel index to use.
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- * @max_channel: maximum channel index to use.
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- */
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-struct mite_channel *mite_request_channel_in_range(struct mite *mite,
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-						   struct mite_ring *ring,
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-						   unsigned int min_channel,
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-						   unsigned int max_channel)
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-{
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-	return __mite_request_channel(mite, ring, min_channel, max_channel);
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-}
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 EXPORT_SYMBOL_GPL(mite_request_channel_in_range);
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 /**
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@@ -610,7 +600,8 @@
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 struct mite_channel *mite_request_channel(struct mite *mite,
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 					  struct mite_ring *ring)
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 {
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-	return __mite_request_channel(mite, ring, 0, mite->num_channels - 1);
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+	return mite_request_channel_in_range(mite, ring, 0,
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+					     mite->num_channels - 1);
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 }
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 EXPORT_SYMBOL_GPL(mite_request_channel);
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@@ -638,7 +629,6 @@
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 		       CHCR_CLR_LC_IE | CHCR_CLR_CONT_RB_IE,
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 		       mite->mmio + MITE_CHCR(mite_chan->channel));
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 		mite_chan->ring = NULL;
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-		mmiowb();
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 	}
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 	spin_unlock_irqrestore(&mite->lock, flags);
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 }
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@@ -943,6 +933,6 @@
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 }
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 module_exit(mite_module_exit);
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-MODULE_AUTHOR("Comedi http://www.comedi.org");
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+MODULE_AUTHOR("Comedi https://www.comedi.org");
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 MODULE_DESCRIPTION("Comedi helper for NI Mite PCI interface chip");
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 MODULE_LICENSE("GPL");