diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2014-11-19 18:29:02 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-20 09:55:29 +0000 |
| commit | 50c0f21b42dd4cd02b51f82274f66912d9a7fa32 (patch) | |
| tree | 129a7c3d73dc0a214762454fe0db9b262e2efa92 /sound/soc/codecs/sigmadsp.c | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
| download | op-kernel-dev-50c0f21b42dd4cd02b51f82274f66912d9a7fa32.zip op-kernel-dev-50c0f21b42dd4cd02b51f82274f66912d9a7fa32.tar.gz | |
ASoC: sigmadsp: Refuse to load firmware files with a non-supported version
Make sure to check the version field of the firmware header to make sure to
not accidentally try to parse a firmware file with a different layout.
Trying to do so can result in loading invalid firmware code to the device.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'sound/soc/codecs/sigmadsp.c')
| -rw-r--r-- | sound/soc/codecs/sigmadsp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/codecs/sigmadsp.c b/sound/soc/codecs/sigmadsp.c index f2de7e0..81a38dd 100644 --- a/sound/soc/codecs/sigmadsp.c +++ b/sound/soc/codecs/sigmadsp.c @@ -159,6 +159,13 @@ int _process_sigma_firmware(struct device *dev, goto done; } + if (ssfw_head->version != 1) { + dev_err(dev, + "Failed to load firmware: Invalid version %d. Supported firmware versions: 1\n", + ssfw_head->version); + goto done; + } + crc = crc32(0, fw->data + sizeof(*ssfw_head), fw->size - sizeof(*ssfw_head)); pr_debug("%s: crc=%x\n", __func__, crc); |
