This is a note to let you know that I've just added the patch titled
dmaengine: at_hdmac: Extend the Flow Controller bitfield to three bits
to the 6.3-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-at_hdmac-extend-the-flow-controller-bitfield-to-three-bits.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e14fd2af7a1d621c167dad761f729135a7a76ff4 Mon Sep 17 00:00:00 2001
From: Peter Rosin <peda@xxxxxxxxxx>
Date: Tue, 23 May 2023 19:20:47 +0200
Subject: dmaengine: at_hdmac: Extend the Flow Controller bitfield to three bits
From: Peter Rosin <peda@xxxxxxxxxx>
commit e14fd2af7a1d621c167dad761f729135a7a76ff4 upstream.
Some chips have two bits (e.g SAMA5D3), and some have three (e.g.
SAM9G45). A field width of three is compatible as long as valid
values are used for the different chips.
There is no current use of any value needing three bits, so the
fixed bug is relatively benign.
Fixes: d8840a7edcf0 ("dmaengine: at_hdmac: Use bitfield access macros")
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>
Signed-off-by: Peter Rosin <peda@xxxxxxxxxx>
Link: https://lore.kernel.org/r/e2c898ba-c3a3-5dd3-384b-0585661c79f2@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/at_hdmac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 6362013b90df..ee3a219e3a89 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -132,7 +132,7 @@
#define ATC_DST_PIP BIT(12) /* Destination Picture-in-Picture enabled */
#define ATC_SRC_DSCR_DIS BIT(16) /* Src Descriptor fetch disable */
#define ATC_DST_DSCR_DIS BIT(20) /* Dst Descriptor fetch disable */
-#define ATC_FC GENMASK(22, 21) /* Choose Flow Controller */
+#define ATC_FC GENMASK(23, 21) /* Choose Flow Controller */
#define ATC_FC_MEM2MEM 0x0 /* Mem-to-Mem (DMA) */
#define ATC_FC_MEM2PER 0x1 /* Mem-to-Periph (DMA) */
#define ATC_FC_PER2MEM 0x2 /* Periph-to-Mem (DMA) */
--
2.41.0
Patches currently in stable-queue which might be from peda@xxxxxxxxxx are
queue-6.3/dmaengine-at_hdmac-repair-bitfield-macros-for-peripheral-id-handling.patch
queue-6.3/dmaengine-at_hdmac-extend-the-flow-controller-bitfield-to-three-bits.patch
