Patch "dmaengine: fsl-edma: correct max_segment_size setting" has been added to the 6.7-stable tree

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

    dmaengine: fsl-edma: correct max_segment_size setting

to the 6.7-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-fsl-edma-correct-max_segment_size-setting.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 6460f2928f75e0db6289f78ff562d4b566193b7b
Author: Frank Li <Frank.Li@xxxxxxx>
Date:   Wed Feb 7 14:47:32 2024 -0500

    dmaengine: fsl-edma: correct max_segment_size setting
    
    [ Upstream commit a79f949a5ce1d45329d63742c2a995f2b47f9852 ]
    
    Correcting the previous setting of 0x3fff to the actual value of 0x7fff.
    
    Introduced new macro 'EDMA_TCD_ITER_MASK' for improved code clarity and
    utilization of FIELD_GET to obtain the accurate maximum value.
    
    Cc: stable@xxxxxxxxxxxxxxx
    Fixes: e06748539432 ("dmaengine: fsl-edma: support edma memcpy")
    Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
    Link: https://lore.kernel.org/r/20240207194733.2112870-1-Frank.Li@xxxxxxx
    Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index bb5221158a770..f5e216b157c75 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -30,8 +30,9 @@
 #define EDMA_TCD_ATTR_SSIZE(x)		(((x) & GENMASK(2, 0)) << 8)
 #define EDMA_TCD_ATTR_SMOD(x)		(((x) & GENMASK(4, 0)) << 11)
 
-#define EDMA_TCD_CITER_CITER(x)		((x) & GENMASK(14, 0))
-#define EDMA_TCD_BITER_BITER(x)		((x) & GENMASK(14, 0))
+#define EDMA_TCD_ITER_MASK		GENMASK(14, 0)
+#define EDMA_TCD_CITER_CITER(x)		((x) & EDMA_TCD_ITER_MASK)
+#define EDMA_TCD_BITER_BITER(x)		((x) & EDMA_TCD_ITER_MASK)
 
 #define EDMA_TCD_CSR_START		BIT(0)
 #define EDMA_TCD_CSR_INT_MAJOR		BIT(1)
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 45cc419b1b4ac..d36e28b9c767a 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -10,6 +10,7 @@
  */
 
 #include <dt-bindings/dma/fsl-edma.h>
+#include <linux/bitfield.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/clk.h>
@@ -582,7 +583,8 @@ static int fsl_edma_probe(struct platform_device *pdev)
 					DMAENGINE_ALIGN_32_BYTES;
 
 	/* Per worst case 'nbytes = 1' take CITER as the max_seg_size */
-	dma_set_max_seg_size(fsl_edma->dma_dev.dev, 0x3fff);
+	dma_set_max_seg_size(fsl_edma->dma_dev.dev,
+			     FIELD_GET(EDMA_TCD_ITER_MASK, EDMA_TCD_ITER_MASK));
 
 	fsl_edma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
 




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