brcm63xx: remove linux 4.4 support

[openwrt/openwrt.git] / target / linux / brcm63xx / patches-4.4 / 000-4.8-08-mtd-spi-nor-simplify-write-loop.patch

diff --git a/target/linux/brcm63xx/patches-4.4/000-4.8-08-mtd-spi-nor-simplify-write-loop.patch b/target/linux/brcm63xx/patches-4.4/000-4.8-08-mtd-spi-nor-simplify-write-loop.patch
deleted file mode 100644 (file)
index b2e840d..0000000
--- a/target/linux/brcm63xx/patches-4.4/000-4.8-08-mtd-spi-nor-simplify-write-loop.patch
+++ /dev/null
@@ -1,103 +0,0 @@
-From e5d05cbd6d8b01f08c95c427a36c66aac769af4f Mon Sep 17 00:00:00 2001
-From: Michal Suchanek <hramrach@gmail.com>
-Date: Thu, 5 May 2016 17:31:54 -0700
-Subject: [PATCH 08/10] mtd: spi-nor: simplify write loop
-
-The spi-nor write loop assumes that what is passed to the hardware
-driver write() is what gets written.
-
-When write() writes less than page size at once data is dropped on the
-floor. Check the amount of data writen and exit if it does not match
-requested amount.
-
-Signed-off-by: Michal Suchanek <hramrach@gmail.com>
-Signed-off-by: Brian Norris <computersforpeace@gmail.com>
-Tested-by Cyrille Pitchen <cyrille.pitchen@atmel.com>
-Acked-by: Michal Suchanek <hramrach@gmail.com>
-Tested-by: Michal Suchanek <hramrach@gmail.com>
----
- drivers/mtd/spi-nor/spi-nor.c | 58 +++++++++++++++++++------------------------
- 1 file changed, 25 insertions(+), 33 deletions(-)
-
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -988,8 +988,8 @@ static int spi_nor_write(struct mtd_info
-       size_t *retlen, const u_char *buf)
- {
-       struct spi_nor *nor = mtd_to_spi_nor(mtd);
--      u32 page_offset, page_size, i;
--      int ret;
-+      size_t page_offset, page_remain, i;
-+      ssize_t ret;
- 
-       dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len);
- 
-@@ -997,45 +997,37 @@ static int spi_nor_write(struct mtd_info
-       if (ret)
-               return ret;
- 
--      write_enable(nor);
-+      for (i = 0; i < len; ) {
-+              ssize_t written;
- 
--      page_offset = to & (nor->page_size - 1);
--
--      /* do all the bytes fit onto one page? */
--      if (page_offset + len <= nor->page_size) {
--              ret = nor->write(nor, to, len, buf);
--              if (ret < 0)
--                      goto write_err;
--              *retlen += ret;
--      } else {
-+              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_size = nor->page_size - page_offset;
--              ret = nor->write(nor, to, page_size, buf);
-+              page_remain = min_t(size_t,
-+                                  nor->page_size - page_offset, len - i);
-+
-+              write_enable(nor);
-+              ret = nor->write(nor, to + i, page_remain, buf + i);
-               if (ret < 0)
-                       goto write_err;
--              *retlen += ret;
-+              written = ret;
- 
--              /* write everything in nor->page_size chunks */
--              for (i = ret; i < len; ) {
--                      page_size = len - i;
--                      if (page_size > nor->page_size)
--                              page_size = nor->page_size;
--
--                      ret = spi_nor_wait_till_ready(nor);
--                      if (ret)
--                              goto write_err;
--
--                      write_enable(nor);
--
--                      ret = nor->write(nor, to + i, page_size, buf + i);
--                      if (ret < 0)
--                              goto write_err;
--                      *retlen += ret;
--                      i += ret;
-+              ret = spi_nor_wait_till_ready(nor);
-+              if (ret)
-+                      goto write_err;
-+              *retlen += written;
-+              i += written;
-+              if (written != page_remain) {
-+                      dev_err(nor->dev,
-+                              "While writing %zu bytes written %zd bytes\n",
-+                              page_remain, written);
-+                      ret = -EIO;
-+                      goto write_err;
-               }
-       }
- 
--      ret = spi_nor_wait_till_ready(nor);
- write_err:
-       spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
-       return ret;