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regmap: Last minute bug fix for 3.4 

This is a last minute bug fix that was only just noticed since the code
 path that's being exercised here is one that is fairly rarely used.  The
 changelog for the change itself is extremely clear and the code itself
 is obvious to inspection so should be pretty safe.
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Merge tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull last minute regman bug fix from Mark Brown:
 "This is a last minute bug fix that was only just noticed since the
  code path that's being exercised here is one that is fairly rarely
  used.  The changelog for the change itself is extremely clear and the
  code itself is obvious to inspection so should be pretty safe."

* tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: fix possible memory corruption in regmap_bulk_read()
hifive-unleashed-5.1
Linus Torvalds 2012-05-09 11:25:45 -07:00
parent 63f4711aec 6560ffd1cc
commit 22b6dd78ae
1 changed files with 3 additions and 1 deletions
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4
drivers/base/regmap/regmap.c
View File

@ -775,9 +775,11 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
map->format.parse_val(val + i);
} else {
for (i = 0; i < val_count; i++) {
ret = regmap_read(map, reg + i, val + (i * val_bytes));
unsigned int ival;
ret = regmap_read(map, reg + i, &ival);
if (ret != 0)
return ret;
memcpy(val + (i * val_bytes), &ival, val_bytes);
}
}