This is a note to let you know that I've just added the patch titled
dmaengine: at_xdmac: Fix at_xdmac_lld struct definition
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-at_xdmac-fix-at_xdmac_lld-struct-definition.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From 912f7c6f7fac273f40e621447cf17d14b50d6e5b Mon Sep 17 00:00:00 2001
From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Date: Wed, 15 Dec 2021 13:01:13 +0200
Subject: dmaengine: at_xdmac: Fix at_xdmac_lld struct definition
From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
commit 912f7c6f7fac273f40e621447cf17d14b50d6e5b upstream.
The hardware channel next descriptor view structure contains just
fields of 32 bits, while dma_addr_t can be of type u64 or u32
depending on CONFIG_ARCH_DMA_ADDR_T_64BIT. Force u32 to comply with
what the hardware expects.
Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211215110115.191749-11-tudor.ambarus@xxxxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/at_xdmac.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -233,15 +233,15 @@ struct at_xdmac {
/* Linked List Descriptor */
struct at_xdmac_lld {
- dma_addr_t mbr_nda; /* Next Descriptor Member */
- u32 mbr_ubc; /* Microblock Control Member */
- dma_addr_t mbr_sa; /* Source Address Member */
- dma_addr_t mbr_da; /* Destination Address Member */
- u32 mbr_cfg; /* Configuration Register */
- u32 mbr_bc; /* Block Control Register */
- u32 mbr_ds; /* Data Stride Register */
- u32 mbr_sus; /* Source Microblock Stride Register */
- u32 mbr_dus; /* Destination Microblock Stride Register */
+ u32 mbr_nda; /* Next Descriptor Member */
+ u32 mbr_ubc; /* Microblock Control Member */
+ u32 mbr_sa; /* Source Address Member */
+ u32 mbr_da; /* Destination Address Member */
+ u32 mbr_cfg; /* Configuration Register */
+ u32 mbr_bc; /* Block Control Register */
+ u32 mbr_ds; /* Data Stride Register */
+ u32 mbr_sus; /* Source Microblock Stride Register */
+ u32 mbr_dus; /* Destination Microblock Stride Register */
};
/* 64-bit alignment needed to update CNDA and CUBC registers in an atomic way. */
Patches currently in stable-queue which might be from tudor.ambarus@xxxxxxxxxxxxx are
queue-4.4/tty-serial-atmel-call-dma_async_issue_pending.patch
queue-4.4/dmaengine-at_xdmac-fix-lld-view-setting.patch
queue-4.4/dmaengine-at_xdmac-fix-at_xdmac_lld-struct-definition.patch
queue-4.4/dmaengine-at_xdmac-print-debug-message-after-realeasing-the-lock.patch
queue-4.4/dmaengine-at_xdmac-don-t-start-transactions-at-tx_submit-level.patch
queue-4.4/tty-serial-atmel-check-return-code-of-dmaengine_subm.patch
