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path: root/drivers/mtd/devices/m25p80.c
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Diffstat (limited to 'drivers/mtd/devices/m25p80.c')
-rw-r--r--drivers/mtd/devices/m25p80.c56
1 files changed, 6 insertions, 50 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 7c60dddbefc..1924d247c1c 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -288,9 +288,6 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
__func__, (long long)instr->addr,
(long long)instr->len);
- /* sanity checks */
- if (instr->addr + instr->len > flash->mtd.size)
- return -EINVAL;
div_u64_rem(instr->len, mtd->erasesize, &rem);
if (rem)
return -EINVAL;
@@ -349,13 +346,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
pr_debug("%s: %s from 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)from, len);
- /* sanity checks */
- if (!len)
- return 0;
-
- if (from + len > flash->mtd.size)
- return -EINVAL;
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
@@ -371,9 +361,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
t[1].len = len;
spi_message_add_tail(&t[1], &m);
- /* Byte count starts at zero. */
- *retlen = 0;
-
mutex_lock(&flash->lock);
/* Wait till previous write/erase is done. */
@@ -417,15 +404,6 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)to, len);
- *retlen = 0;
-
- /* sanity checks */
- if (!len)
- return(0);
-
- if (to + len > flash->mtd.size)
- return -EINVAL;
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
@@ -509,15 +487,6 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)to, len);
- *retlen = 0;
-
- /* sanity checks */
- if (!len)
- return 0;
-
- if (to + len > flash->mtd.size)
- return -EINVAL;
-
spi_message_init(&m);
memset(t, 0, (sizeof t));
@@ -908,14 +877,14 @@ static int __devinit m25p_probe(struct spi_device *spi)
flash->mtd.writesize = 1;
flash->mtd.flags = MTD_CAP_NORFLASH;
flash->mtd.size = info->sector_size * info->n_sectors;
- flash->mtd.erase = m25p80_erase;
- flash->mtd.read = m25p80_read;
+ flash->mtd._erase = m25p80_erase;
+ flash->mtd._read = m25p80_read;
/* sst flash chips use AAI word program */
if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
- flash->mtd.write = sst_write;
+ flash->mtd._write = sst_write;
else
- flash->mtd.write = m25p80_write;
+ flash->mtd._write = m25p80_write;
/* prefer "small sector" erase if possible */
if (info->flags & SECT_4K) {
@@ -932,6 +901,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
ppdata.of_node = spi->dev.of_node;
flash->mtd.dev.parent = &spi->dev;
flash->page_size = info->page_size;
+ flash->mtd.writebufsize = flash->page_size;
if (info->addr_width)
flash->addr_width = info->addr_width;
@@ -1004,21 +974,7 @@ static struct spi_driver m25p80_driver = {
*/
};
-
-static int __init m25p80_init(void)
-{
- return spi_register_driver(&m25p80_driver);
-}
-
-
-static void __exit m25p80_exit(void)
-{
- spi_unregister_driver(&m25p80_driver);
-}
-
-
-module_init(m25p80_init);
-module_exit(m25p80_exit);
+module_spi_driver(m25p80_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mike Lavender");