There are a couple bugs in this code:
1) The cleanup code calls kfree(sma1307->set.header) and
kfree(sma1307->set.def) but those functions were allocated using
devm_kzalloc(). It results in a double free. Delete all these
kfree() calls.
2) A missing call to kfree(data) if the checksum was wrong on this error
path:
if ((sma1307->set.checksum >> 8) != SMA1307_SETTING_CHECKSUM) {
Since the "data" pointer is supposed to be freed on every return, I
changed that to use the __free(kfree) cleanup attribute.
Fixes: 0ec6bd1670 ("ASoC: sma1307: Add NULL check in sma1307_setting_loaded()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/8d32dd96-1404-4373-9b6c-c612a9c18c4c@stanley.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>
When firmware loading is disabled, gcc warns that the local
'fw' variable fails to get initialized:
sound/soc/codecs/sma1307.c: In function 'sma1307_setting_loaded.isra':
sound/soc/codecs/sma1307.c:1717:12: error: 'fw' is used uninitialized [-Werror=uninitialized]
1717 | if (!fw) {
| ^
sound/soc/codecs/sma1307.c:1712:32: note: 'fw' was declared here
1712 | const struct firmware *fw;
Check the return code from request_firmware() to ensure that the
firmware is correctly set, and drop the incorrect release_firmware()
on that uninitialized data.
Fixes: 576c57e6b4 ("ASoC: sma1307: Add driver for Iron Device SMA1307")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20241113175734.2443315-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
