Re: [PATCH] ASoC: cs-amp-lib-test: Fix some NULL vs IS_ERR() bugs

On 23/04/2026 8:09 am, Dan Carpenter wrote:
> The cs_amp_devm_get_vendor_specific_variant_id() function doesn't return
> NULL, it returns error pointers.  Update the checking to match.
> 
> Fixes: d70fa6b569a9 ("ASoC: cs-amp-lib-test: Tests for reading SSIDExV2")
> Signed-off-by: Dan Carpenter <[email protected]>
> ---
>   sound/soc/codecs/cs-amp-lib-test.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/sound/soc/codecs/cs-amp-lib-test.c b/sound/soc/codecs/cs-amp-lib-test.c
> index 636d0f3198b8..bb0cfd9d5db2 100644
> --- a/sound/soc/codecs/cs-amp-lib-test.c
> +++ b/sound/soc/codecs/cs-amp-lib-test.c
> @@ -2360,7 +2360,7 @@ static void cs_amp_lib_test_ssidexv2_fetch_invalid(struct kunit *test)
>   				   cs_amp_lib_test_get_efi_vendor_sysid);
>   
>   	got = cs_amp_devm_get_vendor_specific_variant_id(dev, PCI_VENDOR_ID_DELL, 0xabcd);
> -	KUNIT_EXPECT_NOT_NULL(test, got);
> +	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, got);
>   	KUNIT_EXPECT_EQ(test, PTR_ERR_OR_ZERO(got), -ENOENT);
>   }

No, this is incorrect because we are expecting to get -ENOENT but now it
will fail the KUNIT_EXPECT_NOT_ERR_OR_NULL() and not proceed to the next
line where we assert that we got the expected error.

The asserts are:
1. It should never return NULL (because it returns ERR_PTRs)
2. It should return ERR_PTR(-ENOENT)

The same for the cases below.

>   
> @@ -2376,7 +2376,7 @@ static void cs_amp_lib_test_ssidexv2_not_dell(struct kunit *test)
>   
>   	/* Not returned if SSID vendor is not Dell */
>   	got = cs_amp_devm_get_vendor_specific_variant_id(dev, PCI_VENDOR_ID_CIRRUS, 0xabcd);
> -	KUNIT_EXPECT_NOT_NULL(test, got);
> +	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, got);
>   	KUNIT_EXPECT_EQ(test, PTR_ERR_OR_ZERO(got), -ENOENT);
>   }
>   
> @@ -2391,11 +2391,11 @@ static void cs_amp_lib_test_vendor_variant_id_not_found(struct kunit *test)
>   				   cs_amp_lib_test_get_efi_variable_none);
>   
>   	got = cs_amp_devm_get_vendor_specific_variant_id(dev, PCI_VENDOR_ID_DELL, 0xabcd);
> -	KUNIT_EXPECT_NOT_NULL(test, got);
> +	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, got);
>   	KUNIT_EXPECT_EQ(test, PTR_ERR_OR_ZERO(got), -ENOENT);
>   
>   	got = cs_amp_devm_get_vendor_specific_variant_id(dev, -1, -1);
> -	KUNIT_EXPECT_NOT_NULL(test, got);
> +	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, got);
>   	KUNIT_EXPECT_EQ(test, PTR_ERR_OR_ZERO(got), -ENOENT);
>   }
>