ipq40xx: Remove kernel 4.14 support

[openwrt/staging/chunkeey.git] / target / linux / ipq40xx / patches-4.14 / 050-0005-mtd-nand-force-drivers-to-explicitly-send-READ-PROG-.patch

diff --git a/target/linux/ipq40xx/patches-4.14/050-0005-mtd-nand-force-drivers-to-explicitly-send-READ-PROG-.patch b/target/linux/ipq40xx/patches-4.14/050-0005-mtd-nand-force-drivers-to-explicitly-send-READ-PROG-.patch
deleted file mode 100644 (file)
index e7e2e79..0000000
--- a/target/linux/ipq40xx/patches-4.14/050-0005-mtd-nand-force-drivers-to-explicitly-send-READ-PROG-.patch
+++ /dev/null
@@ -1,94 +0,0 @@
-From 25f815f66a141436df8a4c45e5d2765272aea2ac Mon Sep 17 00:00:00 2001
-From: Boris Brezillon <boris.brezillon@free-electrons.com>
-Date: Thu, 30 Nov 2017 18:01:30 +0100
-Subject: [PATCH 5/7] mtd: nand: force drivers to explicitly send READ/PROG
- commands
-
-The core currently send the READ0 and SEQIN+PAGEPROG commands in
-nand_do_read/write_ops(). This is inconsistent with
-->read/write_oob[_raw]() hooks behavior which are expected to send
-these commands.
-
-There's already a flag (NAND_ECC_CUSTOM_PAGE_ACCESS) to inform the core
-that a specific controller wants to send the READ/SEQIN+PAGEPROG
-commands on its own, but it's an opt-in flag, and existing drivers are
-unlikely to be updated to pass it.
-
-Moreover, some controllers cannot dissociate the READ/PAGEPROG commands
-from the associated data transfer and ECC engine activation, and
-developers have to hack things in their ->cmdfunc() implementation to
-handle such complex cases, or have to accept the perf penalty of sending
-twice the same command.
-To address this problem we are planning on adding a new interface which
-is passed all information about a NAND operation (including the amount
-of data to transfer) and replacing all calls to ->cmdfunc() to calls to
-this new ->exec_op() hook. But, in order to do that, we need to have all
-->cmdfunc() calls placed near their associated ->read/write_buf/byte()
-calls.
-
-Modify the core and relevant drivers to make NAND_ECC_CUSTOM_PAGE_ACCESS
-the default case, and remove this flag.
-
-Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
-[miquel.raynal@free-electrons.com: tested, fixed and rebased on nand/next]
-Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
-Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
----
- drivers/mtd/nand/qcom_nandc.c | 11 +++++++++++
- 1 file changed, 11 insertions(+)
-
---- a/drivers/mtd/nand/qcom_nandc.c
-+++ b/drivers/mtd/nand/qcom_nandc.c
-@@ -1725,6 +1725,7 @@ static int qcom_nandc_read_page(struct m
-       u8 *data_buf, *oob_buf = NULL;
-       int ret;
- 
-+      nand_read_page_op(chip, page, 0, NULL, 0);
-       data_buf = buf;
-       oob_buf = oob_required ? chip->oob_poi : NULL;
- 
-@@ -1750,6 +1751,7 @@ static int qcom_nandc_read_page_raw(stru
-       int i, ret;
-       int read_loc;
- 
-+      nand_read_page_op(chip, page, 0, NULL, 0);
-       data_buf = buf;
-       oob_buf = chip->oob_poi;
- 
-@@ -1850,6 +1852,8 @@ static int qcom_nandc_write_page(struct
-       u8 *data_buf, *oob_buf;
-       int i, ret;
- 
-+      nand_prog_page_begin_op(chip, page, 0, NULL, 0);
-+
-       clear_read_regs(nandc);
-       clear_bam_transaction(nandc);
- 
-@@ -1902,6 +1906,9 @@ static int qcom_nandc_write_page(struct
- 
-       free_descs(nandc);
- 
-+      if (!ret)
-+              ret = nand_prog_page_end_op(chip);
-+
-       return ret;
- }
- 
-@@ -1916,6 +1923,7 @@ static int qcom_nandc_write_page_raw(str
-       u8 *data_buf, *oob_buf;
-       int i, ret;
- 
-+      nand_prog_page_begin_op(chip, page, 0, NULL, 0);
-       clear_read_regs(nandc);
-       clear_bam_transaction(nandc);
- 
-@@ -1970,6 +1978,9 @@ static int qcom_nandc_write_page_raw(str
- 
-       free_descs(nandc);
- 
-+      if (!ret)
-+              ret = nand_prog_page_end_op(chip);
-+
-       return ret;
- }
-