From: Christophe JAILLET christophe.jaillet@wanadoo.fr
stable inclusion from stable-v5.10.137 commit 60e494b4d5784e83314ac00f72ce8e1e4c9f29f7 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 673f58f62ca6fc98979d1cf3fe89c3ff33f29b2e ]
find_first_zero_bit() returns MAX_COPPS_PER_PORT at max here. So 'idx' should be tested with ">=" or the test can't match.
Fixes: 7b20b2be51e1 ("ASoC: qdsp6: q6adm: Add q6adm driver") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Link: https://lore.kernel.org/r/0fca3271649736053eb9649d87e1ca01b056be40.165839412... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@huawei.com --- sound/soc/qcom/qdsp6/q6adm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/qcom/qdsp6/q6adm.c b/sound/soc/qcom/qdsp6/q6adm.c index 72f29720398c..182d36a34faf 100644 --- a/sound/soc/qcom/qdsp6/q6adm.c +++ b/sound/soc/qcom/qdsp6/q6adm.c @@ -217,7 +217,7 @@ static struct q6copp *q6adm_alloc_copp(struct q6adm *adm, int port_idx) idx = find_first_zero_bit(&adm->copp_bitmap[port_idx], MAX_COPPS_PER_PORT);
- if (idx > MAX_COPPS_PER_PORT) + if (idx >= MAX_COPPS_PER_PORT) return ERR_PTR(-EBUSY);
c = kzalloc(sizeof(*c), GFP_ATOMIC);