ar71xx: add support for linux 4.4

[openwrt.git] / target / linux / ar71xx / patches-4.4 / 411-mtd-cfi_cmdset_0002-force-word-write.patch

diff --git a/target/linux/ar71xx/patches-4.4/411-mtd-cfi_cmdset_0002-force-word-write.patch b/target/linux/ar71xx/patches-4.4/411-mtd-cfi_cmdset_0002-force-word-write.patch
new file mode 100644 (file)
index 0000000..39c5478
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/411-mtd-cfi_cmdset_0002-force-word-write.patch
@@ -0,0 +1,61 @@
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -40,7 +40,7 @@
+ #include <linux/mtd/xip.h>
+ 
+ #define AMD_BOOTLOC_BUG
+-#define FORCE_WORD_WRITE 0
++#define FORCE_WORD_WRITE 1
+ 
+ #define MAX_WORD_RETRIES 3
+ 
+@@ -51,7 +51,9 @@
+ 
+ static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+ static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
++#if !FORCE_WORD_WRITE
+ static int cfi_amdstd_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
++#endif
+ static int cfi_amdstd_erase_chip(struct mtd_info *, struct erase_info *);
+ static int cfi_amdstd_erase_varsize(struct mtd_info *, struct erase_info *);
+ static void cfi_amdstd_sync (struct mtd_info *);
+@@ -202,6 +204,7 @@ static void fixup_amd_bootblock(struct m
+ }
+ #endif
+ 
++#if !FORCE_WORD_WRITE
+ static void fixup_use_write_buffers(struct mtd_info *mtd)
+ {
+       struct map_info *map = mtd->priv;
+@@ -211,6 +214,7 @@ static void fixup_use_write_buffers(stru
+               mtd->_write = cfi_amdstd_write_buffers;
+       }
+ }
++#endif /* !FORCE_WORD_WRITE */
+ 
+ /* Atmel chips don't use the same PRI format as AMD chips */
+ static void fixup_convert_atmel_pri(struct mtd_info *mtd)
+@@ -1791,6 +1795,7 @@ static int cfi_amdstd_write_words(struct
+ /*
+  * FIXME: interleaved mode not tested, and probably not supported!
+  */
++#if !FORCE_WORD_WRITE
+ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
+                                   unsigned long adr, const u_char *buf,
+                                   int len)
+@@ -1919,7 +1924,6 @@ static int __xipram do_write_buffer(stru
+       return ret;
+ }
+ 
+-
+ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
+                                   size_t *retlen, const u_char *buf)
+ {
+@@ -1994,6 +1998,7 @@ static int cfi_amdstd_write_buffers(stru
+ 
+       return 0;
+ }
++#endif /* !FORCE_WORD_WRITE */
+ 
+ /*
+  * Wait for the flash chip to become ready to write data