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MTD fixes for 3.9

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This fixes a couple of problems. Firstly, some people are actually still
 using old small-page flash and we broke it by removing the ready check.
 
 Secondly. fix the handling of partitions on Broadcom 47xx devices.
 Recent changes had made it misdetect the location of the NVRAM and
 scribble over the bootloader when it tried to update the variables there.
 With predictably sad results.
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Merge tag 'for-linus-20130318' of git://git.infradead.org/linux-mtd

Pull MTD fixes from David Woodhouse:
 "This fixes a couple of problems.  Firstly, some people are actually
  still using old small-page flash and we broke it by removing the ready
  check.

  Secondly.  fix the handling of partitions on Broadcom 47xx devices.
  Recent changes had made it misdetect the location of the NVRAM and
  scribble over the bootloader when it tried to update the variables
  there.  With predictably sad results."

* tag 'for-linus-20130318' of git://git.infradead.org/linux-mtd:
  mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY
  mtd: bcm47xxpart: look for NVRAM at the end of device
  Revert "mtd: bcm47xxpart: improve probing of nvram partition"
This commit is contained in:
Linus Torvalds 2013-03-18 08:27:41 -07:00
commit 35f8c769aa
4 changed files with 97 additions and 58 deletions
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7
include/linux/mtd/nand.h
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@ -187,6 +187,13 @@ typedef enum {
* This happens with the Renesas AG-AND chips, possibly others.
*/
#define BBT_AUTO_REFRESH 0x00000080
/*
* Chip requires ready check on read (for auto-incremented sequential read).
* True only for small page devices; large page devices do not support
* autoincrement.
*/
#define NAND_NEED_READRDY 0x00000100
/* Chip does not allow subpage writes */
#define NAND_NO_SUBPAGE_WRITE 0x00000200