kernel/3.3: remove yaffs support
[openwrt.git] / target / linux / generic / patches-3.3 / 476-mtd-m25p80-allow-to-disable-small-sector-erase.patch
1 --- a/drivers/mtd/devices/Kconfig
2 +++ b/drivers/mtd/devices/Kconfig
3 @@ -102,6 +102,14 @@ config M25PXX_USE_FAST_READ
4         help
5           This option enables FAST_READ access supported by ST M25Pxx.
6  
7 +config M25PXX_PREFER_SMALL_SECTOR_ERASE
8 +       bool "Prefer small sector erase"
9 +       depends on MTD_M25P80
10 +       default y
11 +       help
12 +         This option enables use of the small erase sectors if that is
13 +         supported by the flash chip.
14 +
15  config MTD_SST25L
16         tristate "Support SST25L (non JEDEC) SPI Flash chips"
17         depends on SPI_MASTER
18 --- a/drivers/mtd/devices/m25p80.c
19 +++ b/drivers/mtd/devices/m25p80.c
20 @@ -84,6 +84,12 @@
21  
22  #define JEDEC_MFR(_jedec_id)   ((_jedec_id) >> 16)
23  
24 +#ifdef CONFIG_M25PXX_PREFER_SMALL_SECTOR_ERASE
25 +#define PREFER_SMALL_SECTOR_ERASE 1
26 +#else
27 +#define PREFER_SMALL_SECTOR_ERASE 0
28 +#endif
29 +
30  /****************************************************************************/
31  
32  struct m25p {
33 @@ -925,7 +931,7 @@ static int __devinit m25p_probe(struct s
34                 flash->mtd.write = m25p80_write;
35  
36         /* prefer "small sector" erase if possible */
37 -       if (info->flags & SECT_4K) {
38 +       if (PREFER_SMALL_SECTOR_ERASE && (info->flags & SECT_4K)) {
39                 flash->erase_opcode = OPCODE_BE_4K;
40                 flash->mtd.erasesize = 4096;
41         } else if (info->flags & SECT_4K_PMC) {