target/linux/brcm47xx/patches-3.8/030-mtd-bcm47xxsflash-add-own-struct-for-abstrating-bus-.patch

   1 --- a/drivers/mtd/devices/bcm47xxsflash.c
   2 +++ b/drivers/mtd/devices/bcm47xxsflash.c
   3 @@ -5,6 +5,8 @@
   4  #include <linux/platform_device.h>
   5  #include <linux/bcma/bcma.h>
   6
   7 +#include "bcm47xxsflash.h"
   8 +
   9  MODULE_LICENSE("GPL");
  10  MODULE_DESCRIPTION("Serial flash driver for BCMA bus");
  11
  12 @@ -13,26 +15,27 @@ static const char *probes[] = { "bcm47xx
  13  static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
  14                               size_t *retlen, u_char *buf)
  15  {
  16 -       struct bcma_sflash *sflash = mtd->priv;
  17 +       struct bcm47xxsflash *b47s = mtd->priv;
  18
  19         /* Check address range */
  20         if ((from + len) > mtd->size)
  21                 return -EINVAL;
  22
  23 -       memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(sflash->window + from),
  24 +       memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),
  25                       len);
  26
  27         return len;
  28  }
  29
  30 -static void bcm47xxsflash_fill_mtd(struct bcma_sflash *sflash,
  31 -                                  struct mtd_info *mtd)
  32 +static void bcm47xxsflash_fill_mtd(struct bcm47xxsflash *b47s)
  33  {
  34 -       mtd->priv = sflash;
  35 +       struct mtd_info *mtd = &b47s->mtd;
  36 +
  37 +       mtd->priv = b47s;
  38         mtd->name = "bcm47xxsflash";
  39         mtd->owner = THIS_MODULE;
  40         mtd->type = MTD_ROM;
  41 -       mtd->size = sflash->size;
  42 +       mtd->size = b47s->size;
  43         mtd->_read = bcm47xxsflash_read;
  44
  45         /* TODO: implement writing support and verify/change following code */
  46 @@ -43,16 +46,23 @@ static void bcm47xxsflash_fill_mtd(struc
  47  static int bcm47xxsflash_probe(struct platform_device *pdev)
  48  {
  49         struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
  50 +       struct bcm47xxsflash *b47s;
  51         int err;
  52
  53 -       sflash->mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
  54 -       if (!sflash->mtd) {
  55 +       b47s = kzalloc(sizeof(*b47s), GFP_KERNEL);
  56 +       if (!b47s) {
  57                 err = -ENOMEM;
  58                 goto out;
  59         }
  60 -       bcm47xxsflash_fill_mtd(sflash, sflash->mtd);
  61 +       sflash->priv = b47s;
  62 +
  63 +       b47s->window = sflash->window;
  64 +       b47s->blocksize = sflash->blocksize;
  65 +       b47s->numblocks = sflash->numblocks;
  66 +       b47s->size = sflash->size;
  67 +       bcm47xxsflash_fill_mtd(b47s);
  68
  69 -       err = mtd_device_parse_register(sflash->mtd, probes, NULL, NULL, 0);
  70 +       err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
  71         if (err) {
  72                 pr_err("Failed to register MTD device: %d\n", err);
  73                 goto err_dev_reg;
  74 @@ -61,7 +71,7 @@ static int bcm47xxsflash_probe(struct pl
  75         return 0;
  76
  77  err_dev_reg:
  78 -       kfree(sflash->mtd);
  79 +       kfree(&b47s->mtd);
  80  out:
  81         return err;
  82  }
  83 @@ -69,9 +79,10 @@ out:
  84  static int bcm47xxsflash_remove(struct platform_device *pdev)
  85  {
  86         struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
  87 +       struct bcm47xxsflash *b47s = sflash->priv;
  88
  89 -       mtd_device_unregister(sflash->mtd);
  90 -       kfree(sflash->mtd);
  91 +       mtd_device_unregister(&b47s->mtd);
  92 +       kfree(b47s);
  93
  94         return 0;
  95  }
  96 --- /dev/null
  97 +++ b/drivers/mtd/devices/bcm47xxsflash.h
  98 @@ -0,0 +1,15 @@
  99 +#ifndef __BCM47XXSFLASH_H
 100 +#define __BCM47XXSFLASH_H
 101 +
 102 +#include <linux/mtd/mtd.h>
 103 +
 104 +struct bcm47xxsflash {
 105 +       u32 window;
 106 +       u32 blocksize;
 107 +       u16 numblocks;
 108 +       u32 size;
 109 +
 110 +       struct mtd_info mtd;
 111 +};
 112 +
 113 +#endif /* BCM47XXSFLASH */
 114 --- a/include/linux/bcma/bcma_driver_chipcommon.h
 115 +++ b/include/linux/bcma/bcma_driver_chipcommon.h
 116 @@ -528,6 +528,7 @@ struct bcma_sflash {
 117         u32 size;
 118
 119         struct mtd_info *mtd;
 120 +       void *priv;
 121  };
 122  #endif
 123