kernel: remove support for kernel 4.9

[openwrt/staging/mkresin.git] / target / linux / generic / pending-4.9 / 470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch

diff --git a/target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch b/target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch
deleted file mode 100644 (file)
index f4ccc5f..0000000
--- a/target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sat, 4 Nov 2017 07:40:23 +0100
-Subject: [PATCH] mtd: spi-nor: support limiting 4K sectors support based on
- flash size
-
-Some devices need 4K sectors to be able to deal with small flash chips.
-For instance, w25x05 is 64 KiB in size, and without 4K sectors, the
-entire chip is just one erase block.
-On bigger flash chip sizes, using 4K sectors can significantly slow down
-many operations, including using a writable filesystem. There are several
-platforms where it makes sense to use a single kernel on both kinds of
-devices.
-
-To support this properly, allow configuring an upper flash chip size
-limit for 4K sectors support.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/drivers/mtd/spi-nor/Kconfig
-+++ b/drivers/mtd/spi-nor/Kconfig
-@@ -29,6 +29,17 @@ config MTD_SPI_NOR_USE_4K_SECTORS
-         Please note that some tools/drivers/filesystems may not work with
-         4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
- 
-+config MTD_SPI_NOR_USE_4K_SECTORS_LIMIT
-+      int "Maximum flash chip size to use 4K sectors on (in KiB)"
-+      depends on MTD_SPI_NOR_USE_4K_SECTORS
-+      default "4096"
-+      help
-+        There are many flash chips that support 4K sectors, but are so large
-+        that using them significantly slows down writing large amounts of
-+        data or using a writable filesystem.
-+        Any flash chip larger than the size specified in this option will
-+        not use 4K sectors.
-+
- config SPI_ATMEL_QUADSPI
-       tristate "Atmel Quad SPI Controller"
-       depends on ARCH_AT91 || (ARM && COMPILE_TEST && !ARCH_EBSA110)
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -1648,10 +1648,12 @@ int spi_nor_scan(struct spi_nor *nor, co
- 
- #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
-       /* prefer "small sector" erase if possible */
--      if (info->flags & SECT_4K) {
-+      if ((info->flags & SECT_4K) && (mtd->size <=
-+          CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) {
-               nor->erase_opcode = SPINOR_OP_BE_4K;
-               mtd->erasesize = 4096;
--      } else if (info->flags & SECT_4K_PMC) {
-+      } else if ((info->flags & SECT_4K_PMC) && (mtd->size <=
-+                 CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) {
-               nor->erase_opcode = SPINOR_OP_BE_4K_PMC;
-               mtd->erasesize = 4096;
-       } else