This is a note to let you know that I've just added the patch titled
mtd: nand: ifc: update bufnum mask for ver >= 2.0.0
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:
mtd-nand-ifc-update-bufnum-mask-for-ver-2.0.0.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 foo@baz Mon Mar 19 09:58:12 CET 2018
From: Jagdish Gediya <jagdish.gediya@xxxxxxx>
Date: Thu, 23 Nov 2017 17:04:31 +0530
Subject: mtd: nand: ifc: update bufnum mask for ver >= 2.0.0
From: Jagdish Gediya <jagdish.gediya@xxxxxxx>
[ Upstream commit bccb06c353af3764ca86d9da47652458e6c2eb41 ]
Bufnum mask is used to calculate page position in the internal SRAM.
As IFC version 2.0.0 has 16KB of internal SRAM as compared to older
versions which had 8KB. Hence bufnum mask needs to be updated.
Signed-off-by: Jagdish Gediya <jagdish.gediya@xxxxxxx>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@xxxxxxx>
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/fsl_ifc_nand.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -988,6 +988,13 @@ static int fsl_ifc_chip_init(struct fsl_
if (ctrl->version == FSL_IFC_VERSION_1_1_0)
fsl_ifc_sram_init(priv);
+ /*
+ * As IFC version 2.0.0 has 16KB of internal SRAM as compared to older
+ * versions which had 8KB. Hence bufnum mask needs to be updated.
+ */
+ if (ctrl->version >= FSL_IFC_VERSION_2_0_0)
+ priv->bufnum_mask = (priv->bufnum_mask * 2) + 1;
+
return 0;
}
Patches currently in stable-queue which might be from jagdish.gediya@xxxxxxx are
queue-4.4/mtd-nand-ifc-update-bufnum-mask-for-ver-2.0.0.patch