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Date: Fri, 28 Aug 2015 18:45:48 +0100 From: Mark Brown <broonie@...nel.org> To: Markus Pargmann <mpa@...gutronix.de>, Mark Brown <broonie@...nel.org> Cc: linux-kernel@...r.kernel.org Subject: Applied "regmap: Add raw_write/read checks for max_raw_write/read sizes" to the regmap tree The patch regmap: Add raw_write/read checks for max_raw_write/read sizes has been applied to the regmap tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 5a267131e1ed7a4bc4fd65a76446f0470d63c5b3 Mon Sep 17 00:00:00 2001 From: Markus Pargmann <mpa@...gutronix.de> Date: Thu, 27 Aug 2015 08:44:31 +0200 Subject: [PATCH] regmap: Add raw_write/read checks for max_raw_write/read sizes Check in regmap_raw_read() and regmap_raw_write() for correct maximum sizes of the operations. Return -E2BIG if this size is not supported because it is too big. Also this patch causes an uninitialized variable warning so it initializes ret (although not necessary). Signed-off-by: Markus Pargmann <mpa@...gutronix.de> Signed-off-by: Mark Brown <broonie@...nel.org> --- drivers/base/regmap/regmap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 66e702d..70ea112 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1584,6 +1584,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg, return -EINVAL; if (val_len % map->format.val_bytes) return -EINVAL; + if (map->max_raw_write && map->max_raw_write > val_len) + return -E2BIG; map->lock(map->lock_arg); @@ -2406,6 +2408,10 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, return ret; } } + if (map->max_raw_read && map->max_raw_read < val_len) { + ret = -E2BIG; + goto out; + } for (i = 0; i < val_count * val_bytes; i += val_bytes) map->format.parse_inplace(val + i); -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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