target/linux/generic-2.6/patches-2.6.21/007-samsung_flash.patch

   1 Index: linux-2.6.21.7/drivers/mtd/chips/cfi_cmdset_0002.c
   2 ===================================================================
   3 --- linux-2.6.21.7.orig/drivers/mtd/chips/cfi_cmdset_0002.c
   4 +++ linux-2.6.21.7/drivers/mtd/chips/cfi_cmdset_0002.c
   5 @@ -51,6 +51,7 @@
   6  #define SST49LF040B            0x0050
   7  #define SST49LF008A            0x005a
   8  #define AT49BV6416             0x00d6
   9 +#define MANUFACTURER_SAMSUNG   0x00ec
  10
  11  static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
  12  static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
  13 @@ -294,12 +295,19 @@ struct mtd_info *cfi_cmdset_0002(struct
  14
  15                 if (extp->MajorVersion != '1' ||
  16                     (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
  17 -                       printk(KERN_ERR "  Unknown Amd/Fujitsu Extended Query "
  18 -                              "version %c.%c.\n",  extp->MajorVersion,
  19 -                              extp->MinorVersion);
  20 -                       kfree(extp);
  21 -                       kfree(mtd);
  22 -                       return NULL;
  23 +                       if (cfi->mfr == MANUFACTURER_SAMSUNG &&
  24 +                           (extp->MajorVersion == '3' && extp->MinorVersion == '3')) {
  25 +                           printk(KERN_NOTICE "  Newer Samsung flash detected, "
  26 +                                  "should be compatibile with Amd/Fujitsu.\n");
  27 +                       }
  28 +                       else {
  29 +                           printk(KERN_ERR "  Unknown Amd/Fujitsu Extended Query "
  30 +                                  "version %c.%c.\n",  extp->MajorVersion,
  31 +                                  extp->MinorVersion);
  32 +                           kfree(extp);
  33 +                           kfree(mtd);
  34 +                           return NULL;
  35 +                       }
  36                 }
  37
  38                 /* Install our own private info structure */