layerscape: drop linux 4.4 support

[openwrt/openwrt.git] / target / linux / layerscape / patches-4.4 / 1086-mtd-spi-nor-wait-until-lock-unlock-operations-are-re.patch

diff --git a/target/linux/layerscape/patches-4.4/1086-mtd-spi-nor-wait-until-lock-unlock-operations-are-re.patch b/target/linux/layerscape/patches-4.4/1086-mtd-spi-nor-wait-until-lock-unlock-operations-are-re.patch
deleted file mode 100644 (file)
index 47f2c83..0000000
--- a/target/linux/layerscape/patches-4.4/1086-mtd-spi-nor-wait-until-lock-unlock-operations-are-re.patch
+++ /dev/null
@@ -1,66 +0,0 @@
-From 3a06c61b48fbc23046928275e37a693e1055ae74 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Ezequiel=20Garc=C3=ADa?= <ezequiel@vanguardiasur.com.ar>
-Date: Mon, 28 Dec 2015 17:54:51 -0300
-Subject: [PATCH 086/113] mtd: spi-nor: wait until lock/unlock operations are
- ready
-
-On Micron and Numonyx devices, the status register write command
-(WRSR), raises a work-in-progress bit (WIP) on the status register.
-The datasheets for these devices specify that while the status
-register write is in progress, the status register WIP bit can still
-be read to check the end of the operation.
-
-This commit adds a wait_till_ready call on lock/unlock operations,
-which is required for Micron and Numonyx but should be harmless for
-others. This is needed to prevent applications from issuing erase or
-program operations before the unlock operation is completed.
-
-Reported-by: Stas Sergeev <stsp@list.ru>
-Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
-Signed-off-by: Brian Norris <computersforpeace@gmail.com>
----
- drivers/mtd/spi-nor/spi-nor.c |   12 ++++++++++--
- 1 file changed, 10 insertions(+), 2 deletions(-)
-
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -482,6 +482,7 @@ static int stm_lock(struct spi_nor *nor,
-       int status_old, status_new;
-       u8 mask = SR_BP2 | SR_BP1 | SR_BP0;
-       u8 shift = ffs(mask) - 1, pow, val;
-+      int ret;
- 
-       status_old = read_sr(nor);
-       if (status_old < 0)
-@@ -520,7 +521,10 @@ static int stm_lock(struct spi_nor *nor,
-               return -EINVAL;
- 
-       write_enable(nor);
--      return write_sr(nor, status_new);
-+      ret = write_sr(nor, status_new);
-+      if (ret)
-+              return ret;
-+      return spi_nor_wait_till_ready(nor);
- }
- 
- /*
-@@ -534,6 +538,7 @@ static int stm_unlock(struct spi_nor *no
-       int status_old, status_new;
-       u8 mask = SR_BP2 | SR_BP1 | SR_BP0;
-       u8 shift = ffs(mask) - 1, pow, val;
-+      int ret;
- 
-       status_old = read_sr(nor);
-       if (status_old < 0)
-@@ -570,7 +575,10 @@ static int stm_unlock(struct spi_nor *no
-               return -EINVAL;
- 
-       write_enable(nor);
--      return write_sr(nor, status_new);
-+      ret = write_sr(nor, status_new);
-+      if (ret)
-+              return ret;
-+      return spi_nor_wait_till_ready(nor);
- }
- 
- /*