Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (67 commits)
  [MTD] [MAPS] Fix printk format warning in nettel.c
  [MTD] [NAND] add cmdline parsing (mtdparts=) support to cafe_nand
  [MTD] CFI: remove major/minor version check for command set 0x0002
  [MTD] [NAND] ndfc driver
  [MTD] [TESTS] Fix some size_t printk format warnings
  [MTD] LPDDR Makefile and KConfig
  [MTD] LPDDR extended physmap driver to support LPDDR flash
  [MTD] LPDDR added new pfow_base parameter
  [MTD] LPDDR Command set driver
  [MTD] LPDDR PFOW definition
  [MTD] LPDDR QINFO records definitions
  [MTD] LPDDR qinfo probing.
  [MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately
  [MTD] [NAND] pxa3xx: fix non-page-aligned reads
  [MTD] [NAND] fix nandsim sched.h references
  [MTD] [NAND] alauda: use USB API functions rather than constants
  [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
  [MTD] fix m25p80 64-bit divisions
  [MTD] fix dataflash 64-bit divisions
  [MTD] [NAND] Set the fsl elbc ECCM according the settings in bootloader.
  ...

Fixed up trivial debug conflicts in drivers/mtd/devices/{m25p80.c,mtd_dataflash.c}

1 files changed, 58 insertions, 17 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 64433eb411d7..3aa5d77c2cdb 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -15,6 +15,8 @@
 #include <linux/mtd/compatmac.h>
 #include <mtd/mtd-abi.h>
 
+#include <asm/div64.h>
+
 #define MTD_CHAR_MAJOR 90
 #define MTD_BLOCK_MAJOR 31
 #define MAX_MTD_DEVICES 32
@@ -25,20 +27,20 @@
 #define MTD_ERASE_DONE          0x08
 #define MTD_ERASE_FAILED        0x10
 
-#define MTD_FAIL_ADDR_UNKNOWN 0xffffffff
+#define MTD_FAIL_ADDR_UNKNOWN -1LL
 
 /* If the erase fails, fail_addr might indicate exactly which block failed.  If
    fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not
    specific to any particular block. */
 struct erase_info {
         struct mtd_info *mtd;
-        u_int32_t addr;
-        u_int32_t len;
-        u_int32_t fail_addr;
+        uint64_t addr;
+        uint64_t len;
+        uint64_t fail_addr;
         u_long time;
         u_long retries;
-        u_int dev;
-        u_int cell;
+        unsigned dev;
+        unsigned cell;
         void (*callback) (struct erase_info *self);
         u_long priv;
         u_char state;
@@ -46,9 +48,9 @@ struct erase_info {
 };
 
 struct mtd_erase_region_info {
-        u_int32_t offset;                       /* At which this region starts, from the beginning of the MTD */
-        u_int32_t erasesize;            /* For this region */
-        u_int32_t numblocks;            /* Number of blocks of erasesize in this region */
+        uint64_t offset;                        /* At which this region starts, from the beginning of the MTD */
+        uint32_t erasesize;             /* For this region */
+        uint32_t numblocks;             /* Number of blocks of erasesize in this region */
         unsigned long *lockmap;         /* If keeping bitmap of locks */
 };
 
@@ -100,14 +102,14 @@ struct mtd_oob_ops {
 
 struct mtd_info {
         u_char type;
-        u_int32_t flags;
-        u_int32_t size;  // Total size of the MTD
+        uint32_t flags;
+        uint64_t size;   // Total size of the MTD
 
         /* "Major" erase size for the device. Naïve users may take this
          * to be the only erase size available, or may use the more detailed
          * information below if they desire
          */
-        u_int32_t erasesize;
+        uint32_t erasesize;
         /* Minimal writable flash unit size. In case of NOR flash it is 1 (even
          * though individual bits can be cleared), in case of NAND flash it is
          * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
@@ -115,10 +117,20 @@ struct mtd_info {
          * Any driver registering a struct mtd_info must ensure a writesize of
          * 1 or larger.
          */
-        u_int32_t writesize;
+        uint32_t writesize;
+
+        uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+        uint32_t oobavail;  // Available OOB bytes per block
 
-        u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
-        u_int32_t oobavail;  // Available OOB bytes per block
+        /*
+         * If erasesize is a power of 2 then the shift is stored in
+         * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize.
+         */
+        unsigned int erasesize_shift;
+        unsigned int writesize_shift;
+        /* Masks based on erasesize_shift and writesize_shift */
+        unsigned int erasesize_mask;
+        unsigned int writesize_mask;
 
         // Kernel-only stuff starts here.
         const char *name;
@@ -190,8 +202,8 @@ struct mtd_info {
         void (*sync) (struct mtd_info *mtd);
 
         /* Chip-supported device locking */
-        int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
-        int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+        int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
 
         /* Power Management functions */
         int (*suspend) (struct mtd_info *mtd);
@@ -221,6 +233,35 @@ struct mtd_info {
         void (*put_device) (struct mtd_info *mtd);
 };
 
+static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz >> mtd->erasesize_shift;
+        do_div(sz, mtd->erasesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz & mtd->erasesize_mask;
+        return do_div(sz, mtd->erasesize);
+}
+
+static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz >> mtd->writesize_shift;
+        do_div(sz, mtd->writesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz & mtd->writesize_mask;
+        return do_div(sz, mtd->writesize);
+}
 
         /* Kernel-side ioctl definitions */