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FAILED: patch "[PATCH] mtd: spi-nor: spansion: Enable JFFS2 write buffer for" failed to apply to 6.3-stable tree

PATCH [email protected] 1 participant 1 message May 7, 2023

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The patch below does not apply to the 6.3-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.3.y
git checkout FETCH_HEAD
git cherry-pick -x a9180c298d3527f43563d02a62cb9e7e145642c6
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2023050736-afraid-bauble-2569@gregkh' --subject-prefix 'PATCH 6.3.y' HEAD^..

Possible dependencies:

a9180c298d35 ("mtd: spi-nor: spansion: Enable JFFS2 write buffer for S25FS256T") 6afcc84080c4 ("mtd: spi-nor: spansion: Add support for Infineon S25FS256T")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From a9180c298d3527f43563d02a62cb9e7e145642c6 Mon Sep 17 00:00:00 2001
From: Takahiro Kuwano <[email protected]>
Date: Thu, 6 Apr 2023 15:17:46 +0900
Subject: [PATCH] mtd: spi-nor: spansion: Enable JFFS2 write buffer for
S25FS256T

Infineon(Cypress) SEMPER NOR flash family has on-die ECC and its program granularity is 16-byte ECC data unit size. JFFS2 supports write buffer mode for ECC'd NOR flash. Provide a way to clear the MTD_BIT_WRITEABLE flag in order to enable JFFS2 write buffer mode support. Drop the comment as the same info is now specified in cypress_nor_ecc_init().

drivers/mtd/spi-nor/spansion.c +1 -7
index 4d0cc10e3d85..ffeede78700d 100644
@@ -384,13 +384,7 @@ static void s25fs256t_post_sfdp_fixup(struct spi_nor *nor)
 
 static void s25fs256t_late_init(struct spi_nor *nor)
 {
-	/*
-	 * Programming is supported only in 16-byte ECC data unit granularity.
-	 * Byte-programming, bit-walking, or multiple program operations to the
-	 * same ECC data unit without an erase are not allowed. See chapter
-	 * 5.3.1 and 5.6 in the datasheet.
-	 */
-	nor->params->writesize = 16;
+	cypress_nor_ecc_init(nor);
 }
 
 static struct spi_nor_fixups s25fs256t_fixups = {