[MTD] fix m25p80 64-bit divisions
MTD has recently been upgraded for 64-bit support, see commit
number 69423d99fc182a81f3c5db3eb5c140acc6fc64be in the
mtd-2.6.git tree (git://git.infradead.org/mtd-2.6.git)
or see this URL:
http://git.infradead.org/mtd-2.6.git?a=commit;h=69423d99fc182a81f3c5db3eb5c140acc6fc64be
Some variables in MTD data structures which were 32-bit
became 64-bit. Namely, the 'size' field in 'struct mtd_info'
and the 'addr'/'len' fields in 'struct erase_info'. This
means we have to use 'do_div' to divide them.
This patch fixes the following linking error:
ERROR: "__umoddi3" [drivers/mtd/devices/m25p80.ko] undefined!
This patch changes divisions of 64-bit variable so that they use
'do_div'. This patch also change some print placeholders to
get rid of gcc warnings.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 6659b22..9be0229 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -20,6 +20,7 @@
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
+#include <linux/math64.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -169,9 +170,9 @@
*/
static int erase_chip(struct m25p *flash)
{
- DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB\n",
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %lldKiB\n",
flash->spi->dev.bus_id, __func__,
- flash->mtd.size / 1024);
+ (long long)(flash->mtd.size >> 10));
/* Wait until finished previous write command. */
if (wait_till_ready(flash))
@@ -232,18 +233,18 @@
{
struct m25p *flash = mtd_to_m25p(mtd);
u32 addr,len;
+ uint32_t rem;
- DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%llx, len %lld\n",
flash->spi->dev.bus_id, __func__, "at",
- (u32)instr->addr, instr->len);
+ (long long)instr->addr, (long long)instr->len);
/* sanity checks */
if (instr->addr + instr->len > flash->mtd.size)
return -EINVAL;
- if ((instr->addr % mtd->erasesize) != 0
- || (instr->len % mtd->erasesize) != 0) {
+ div_u64_rem(instr->len, mtd->erasesize, &rem);
+ if (rem)
return -EINVAL;
- }
addr = instr->addr;
len = instr->len;
@@ -677,24 +678,24 @@
flash->mtd.erasesize = info->sector_size;
}
- dev_info(&spi->dev, "%s (%d Kbytes)\n", info->name,
- flash->mtd.size / 1024);
+ dev_info(&spi->dev, "%s (%lld Kbytes)\n", info->name,
+ (long long)flash->mtd.size >> 10);
DEBUG(MTD_DEBUG_LEVEL2,
- "mtd .name = %s, .size = 0x%.8x (%uMiB) "
+ "mtd .name = %s, .size = 0x%llx (%lldMiB) "
".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n",
flash->mtd.name,
- flash->mtd.size, flash->mtd.size / (1024*1024),
+ (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20),
flash->mtd.erasesize, flash->mtd.erasesize / 1024,
flash->mtd.numeraseregions);
if (flash->mtd.numeraseregions)
for (i = 0; i < flash->mtd.numeraseregions; i++)
DEBUG(MTD_DEBUG_LEVEL2,
- "mtd.eraseregions[%d] = { .offset = 0x%.8x, "
+ "mtd.eraseregions[%d] = { .offset = 0x%llx, "
".erasesize = 0x%.8x (%uKiB), "
".numblocks = %d }\n",
- i, flash->mtd.eraseregions[i].offset,
+ i, (long long)flash->mtd.eraseregions[i].offset,
flash->mtd.eraseregions[i].erasesize,
flash->mtd.eraseregions[i].erasesize / 1024,
flash->mtd.eraseregions[i].numblocks);
@@ -722,12 +723,12 @@
if (nr_parts > 0) {
for (i = 0; i < nr_parts; i++) {
DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
- "{.name = %s, .offset = 0x%.8x, "
- ".size = 0x%.8x (%uKiB) }\n",
+ "{.name = %s, .offset = 0x%llx, "
+ ".size = 0x%llx (%lldKiB) }\n",
i, parts[i].name,
- parts[i].offset,
- parts[i].size,
- parts[i].size / 1024);
+ (long long)parts[i].offset,
+ (long long)parts[i].size,
+ (long long)(parts[i].size >> 10));
}
flash->partitioned = 1;
return add_mtd_partitions(&flash->mtd, parts, nr_parts);