Patch "dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
dmaengine-ti-dma-crossbar-correct-am335x-am43xx-mux-value-type.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Peter Ujfalusi <[email protected]>
Date: Wed, 8 Nov 2017 12:02:25 +0200
Subject: dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type

From: Peter Ujfalusi <[email protected]>

[ Upstream commit 288e7560e4d3e259aa28f8f58a8dfe63627a1bf6 ]

The used 0x1f mask is only valid for am335x family of SoC, different family using this type of crossbar might have different number of electable events. In case of am43xx family 0x3f mask should have been used for example.
Instead of trying to handle each family's mask, just use u8 type to store the mux value since the event offsets are aligned to byte offset.

---
 drivers/dma/ti-dma-crossbar.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

@@ -46,12 +46,12 @@ struct ti_am335x_xbar_data {
 
 struct ti_am335x_xbar_map {
 	u16 dma_line;
-	u16 mux_val;
+	u8 mux_val;
 };
 
-static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u16 val)
+static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u8 val)
 {
-	writeb_relaxed(val & 0x1f, iomem + event);
+	writeb_relaxed(val, iomem + event);
 }
 
 static void ti_am335x_xbar_free(struct device *dev, void *route_data)

@@ -102,7 +102,7 @@ static void *ti_am335x_xbar_route_alloca
 	}
 
 	map->dma_line = (u16)dma_spec->args[0];
-	map->mux_val = (u16)dma_spec->args[2];
+	map->mux_val = (u8)dma_spec->args[2];
 
 	dma_spec->args[2] = 0;
 	dma_spec->args_count = 2;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/dmaengine-ti-dma-crossbar-correct-am335x-am43xx-mux-value-type.patch