diff options
| author | Krzysztof Kozlowski | 2017-07-27 19:13:36 +0200 |
|---|---|---|
| committer | Mark Brown | 2017-07-28 10:58:23 +0100 |
| commit | 776bac64bf13e20c27f7ad168811abdf3b72f14d (patch) | |
| tree | 9e5802d8a1976e8d4ca635cac866c3b06be64e05 /mm/msync.c | |
| parent | 0f11daf10b4ac6a6c8ea6b39552f119c595b5406 (diff) | |
ASoC: samsung: Fix possible double iounmap on s3c24xx driver probe failure
Commit 87b132bc0315 ("ASoC: samsung: s3c24{xx,12}-i2s: port to use
generic dmaengine API") moved ioremap() call from
s3c-i2s-v2.c:s3c_i2sv2_probe() to s3c2412-i2s.c:s3c2412_iis_dev_probe()
and converted it to devm- resource managed interface.
However the error path in first of them - s3c_i2sv2_probe() - was not
updated. If getting a iis clock in s3c_i2sv2_probe() failed, the
address space would be unmapped there. This could lead to:
1. double iounmap() later from devm-interface of s3c2412_iis_dev_probe()),
2. accessing the memory by other functions in s3c2412-i2s.c unit.
Anyway, the owner of this mapped region should be s3c2412-i2s.c because
it starts the mapping.
Affected are drivers for S3C24xx family although issue was not reproduced.
Fixes: 87b132bc0315 ("ASoC: samsung: s3c24{xx,12}-i2s: port to use generic dmaengine API")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arvind Yadav<arvind.yadav.cs@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'mm/msync.c')
0 files changed, 0 insertions, 0 deletions