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| author |   Mark Brown <broonie@kernel.org> | 2014-09-29 20:49:40 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-09-29 20:49:40 +0100 |
| commit | 25a948778759ad87d7b005522248cec97eaaa4c5 (patch) | |
| tree | 37edf6ad96397c651120cb4ecbd9b7c9ac47b081 /drivers/base | |
| parent | Linux 3.17-rc7 (diff) | |
| parent | regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error. (diff) | |
| download | wireguard-linux-25a948778759ad87d7b005522248cec97eaaa4c5.tar.xz wireguard-linux-25a948778759ad87d7b005522248cec97eaaa4c5.zip | |
Merge remote-tracking branch 'regmap/fix/core' into regmap-linus
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 1cf427bc0d4a..3a785a4f4ff6 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1408,7 +1408,7 @@ int _regmap_write(struct regmap *map, unsigned int reg, } #ifdef LOG_DEVICE - if (strcmp(dev_name(map->dev), LOG_DEVICE) == 0) + if (map->dev && strcmp(dev_name(map->dev), LOG_DEVICE) == 0) dev_info(map->dev, "%x <= %x\n", reg, val); #endif @@ -1659,6 +1659,9 @@ out: } else { void *wval; + if (!val_count) + return -EINVAL; + wval = kmemdup(val, val_count * val_bytes, GFP_KERNEL); if (!wval) { dev_err(map->dev, "Error in memory allocation\n"); @@ -2058,7 +2061,7 @@ static int _regmap_read(struct regmap *map, unsigned int reg, ret = map->reg_read(context, reg, val); if (ret == 0) { #ifdef LOG_DEVICE - if (strcmp(dev_name(map->dev), LOG_DEVICE) == 0) + if (map->dev && strcmp(dev_name(map->dev), LOG_DEVICE) == 0) dev_info(map->dev, "%x => %x\n", reg, *val); #endif |