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authorJonas Gorski <jonas.gorski@gmail.com>2017-07-05 10:53:00 +0200
committerJonas Gorski <jonas.gorski@gmail.com>2017-07-05 11:24:24 +0200
commita0bb6c91fee399fd2008bff571ec77fd57742f27 (patch)
tree917c54a7531cd233446e9c8d017f8dbe9775f338 /target
parenteafaef3765152526e29a18329900b9ba39eae3bb (diff)
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brcm63xx: remove misleading warning about partial SPI NOR writes
The warning will be triggered by jffs2 or UBI, and partial writes are no issue for most flash chips. Fixes: 2a2b16210bbc ("brcm63xx: backport upstream solution for SPI message size limits") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Diffstat (limited to 'target')
-rw-r--r--target/linux/brcm63xx/patches-4.4/001-4.11-02-mtd-spi-nor-remove-WARN_ONCE-message-in-spi_nor_writ.patch33
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/001-4.11-02-mtd-spi-nor-remove-WARN_ONCE-message-in-spi_nor_writ.patch b/target/linux/brcm63xx/patches-4.4/001-4.11-02-mtd-spi-nor-remove-WARN_ONCE-message-in-spi_nor_writ.patch
new file mode 100644
index 0000000000..7c70d20a43
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/001-4.11-02-mtd-spi-nor-remove-WARN_ONCE-message-in-spi_nor_writ.patch
@@ -0,0 +1,33 @@
+From bc0e151514d09cadb56e473a10c783e64e48ce0b Mon Sep 17 00:00:00 2001
+From: Cyrille Pitchen <cyrille.pitchen@atmel.com>
+Date: Tue, 6 Dec 2016 18:14:24 +0100
+Subject: [PATCH] mtd: spi-nor: remove WARN_ONCE() message in spi_nor_write()
+
+This patch removes the WARN_ONCE() test in spi_nor_write().
+This macro triggers the display of a warning message almost every time we
+use a UBI file-system because a write operation is performed at offset 64,
+which is in the middle of the SPI NOR memory page. This is a valid
+operation for ubifs.
+
+Hence this warning is pretty annoying and useless so we just remove it.
+
+Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
+Suggested-by: Richard Weinberger <richard@nod.at>
+Suggested-by: Andras Szemzo <szemzo.andras@gmail.com>
+Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+---
+ drivers/mtd/spi-nor/spi-nor.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -1014,9 +1014,6 @@ static int spi_nor_write(struct mtd_info
+ ssize_t written;
+
+ page_offset = (to + i) & (nor->page_size - 1);
+- WARN_ONCE(page_offset,
+- "Writing at offset %zu into a NOR page. Writing partial pages may decrease reliability and increase wear of NOR flash.",
+- page_offset);
+ /* the size of data remaining on the first page */
+ page_remain = min_t(size_t,
+ nor->page_size - page_offset, len - i);