busybox: 1.15.2 flash_eraseall fix for modern kernel headers

86cfb70ca upstream.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/busybox/busybox-1.15.2-flash-eraseall.patch

@@ -0,0 +1,104 @@
+From 86cfb70ca5f2bde11f2d071bc59db75291d8552f Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux@googlemail.com>
+Date: Fri, 27 Nov 2009 13:26:17 +0100
+Subject: [PATCH] flash_eraseall: stop using obsolete mtd/jffs2-user.h; code shrink
+
+function                                             old     new   delta
+show_progress                                         68      67      -1
+flash_eraseall_main                                 1007     882    -125
+------------------------------------------------------------------------------
+(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-126)           Total: -126 bytes
+
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+---
+ miscutils/flash_eraseall.c |   47 ++++++++++++++++++++++++++++---------------
+ 1 files changed, 30 insertions(+), 17 deletions(-)
+
+diff --git a/miscutils/flash_eraseall.c b/miscutils/flash_eraseall.c
+index ba0a6b5..ca00a13 100644
+--- a/miscutils/flash_eraseall.c
++++ b/miscutils/flash_eraseall.c
+@@ -12,22 +12,35 @@
+ 
+ #include "libbb.h"
+ #include <mtd/mtd-user.h>
+-#include <mtd/jffs2-user.h>
++#include <linux/jffs2.h>
+ 
+ #define OPTION_J	(1 << 0)
+ #define OPTION_Q	(1 << 1)
+ #define IS_NAND		(1 << 2)
+ #define BBTEST		(1 << 3)
+ 
+-struct globals {
+-	/* This is used in the cpu_to_je/je_to_cpu macros in jffs2_user.h */
+-	int tgt_endian;
+-};
+-#define G (*(struct globals*)&bb_common_bufsiz1)
+-#define target_endian	(G.tgt_endian)
+-#define INIT_G() do { \
+-	target_endian = __BYTE_ORDER; \
+-} while (0)
++/* mtd/jffs2-user.h used to have this atrocity:
++extern int target_endian;
++
++#define t16(x) ({ __u16 __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_16(__b); })
++#define t32(x) ({ __u32 __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_32(__b); })
++
++#define cpu_to_je16(x) ((jint16_t){t16(x)})
++#define cpu_to_je32(x) ((jint32_t){t32(x)})
++#define cpu_to_jemode(x) ((jmode_t){t32(x)})
++
++#define je16_to_cpu(x) (t16((x).v16))
++#define je32_to_cpu(x) (t32((x).v32))
++#define jemode_to_cpu(x) (t32((x).m))
++
++but mtd/jffs2-user.h is gone now (at least 2.6.31.6 does not have it anymore)
++*/
++
++/* We always use native endianness */
++#undef cpu_to_je16
++#undef cpu_to_je32
++#define cpu_to_je16(v) ((jint16_t){(v)})
++#define cpu_to_je32(v) ((jint32_t){(v)})
+ 
+ static uint32_t crc32(uint32_t val, const void *ss, int len,
+ 		uint32_t *crc32_table)
+@@ -40,9 +53,11 @@ static uint32_t crc32(uint32_t val, const void *ss, int len,
+ 
+ static void show_progress(mtd_info_t *meminfo, erase_info_t *erase)
+ {
+-	printf("\rErasing %d Kibyte @ %x -- %2llu %% complete.",
+-		(unsigned)meminfo->erasesize / 1024, erase->start,
+-		(unsigned long long) erase->start * 100 / meminfo->size);
++	printf("\rErasing %u Kibyte @ %x - %2u%% complete.",
++		(unsigned)meminfo->erasesize / 1024,
++		erase->start,
++		(unsigned) ((unsigned long long) erase->start * 100 / meminfo->size)
++	);
+ 	fflush(stdout);
+ }
+ 
+@@ -57,17 +72,15 @@ int flash_eraseall_main(int argc UNUSED_PARAM, char **argv)
+ 	unsigned int flags;
+ 	char *mtd_name;
+ 
+-	INIT_G();
+ 	opt_complementary = "=1";
+ 	flags = BBTEST | getopt32(argv, "jq");
+ 
+ 	mtd_name = argv[optind];
+-	xstat(mtd_name, &st);
++	fd = xopen(mtd_name, O_RDWR);
++	fstat(fd, &st);
+ 	if (!S_ISCHR(st.st_mode))
+ 		bb_error_msg_and_die("%s: not a char device", mtd_name);
+ 
+-	fd = xopen(mtd_name, O_RDWR);
+-
+ 	xioctl(fd, MEMGETINFO, &meminfo);
+ 	erase.length = meminfo.erasesize;
+ 	if (meminfo.type == MTD_NANDFLASH)
+-- 
+1.6.5
+