From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Honghui Jiang <jiang_hh2019@163.com>
Cc: Mark Brown <broonie@kernel.org>,
Andy Shevchenko <andy@kernel.org>,
Serge Semin <fancer.lancer@gmail.com>,
Brendan Higgins <brendan.higgins@linux.dev>,
David Gow <david@davidgow.net>, Rae Moar <raemoar63@gmail.com>,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com
Subject: Re: [PATCH v2 4/4] spi: Add KUnit coverage for DMA mapping error paths
Date: Fri, 14 Aug 2026 15:27:13 +0300 [thread overview]
Message-ID: <an8JaNLIy4je-tiG@ashevche-desk.local> (raw)
In-Reply-To: <20260814031419.43378-5-jiang_hh2019@163.com>
On Fri, Aug 14, 2026 at 11:14:18AM +0800, Honghui Jiang wrote:
> Add KUnit tests for the __spi_map_msg() error paths. The tests verify
> that a later TX or RX mapping failure clears the mapping state of
> earlier transfers and leaves cur_{tx,rx}_dma_dev identifying the
> current mapping device.
>
> A zero-length transfer causes sg_alloc_table() to return -EINVAL,
> providing deterministic failure injection without test hooks.
> Additional cases cover successful map/unmap and a message which
> requires no mapping.
>
> Build the DMA suite as a separate translation unit, exposing the two
> internal mapping helpers only for KUnit through the local internal
> header. Enable SPI in the default and all-tests KUnit configurations so
> the suite is exercised there.
...
> +++ b/tools/testing/kunit/configs/default.config
> @@ -1,3 +1,4 @@
> CONFIG_KUNIT=y
> CONFIG_KUNIT_EXAMPLE_TEST=y
> CONFIG_KUNIT_ALL_TESTS=y
> +CONFIG_SPI=y
This is a stray change.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-08-14 12:27 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 3:14 [PATCH v2 0/4] spi: Fix DMA mapping ownership on partial map failure Honghui Jiang
2026-08-14 3:14 ` [PATCH v2 1/4] " Honghui Jiang
2026-08-14 3:14 ` [PATCH v2 2/4] spi: Move __spi_unmap_msg() before __spi_map_msg() Honghui Jiang
2026-08-14 3:14 ` [PATCH v2 3/4] spi: Clear current DMA devices when unmapping a message Honghui Jiang
2026-08-14 3:14 ` [PATCH v2 4/4] spi: Add KUnit coverage for DMA mapping error paths Honghui Jiang
2026-08-14 12:27 ` Andy Shevchenko [this message]
2026-08-14 12:49 ` Mark Brown
2026-08-14 17:38 ` Honghui Jiang
2026-08-14 17:41 ` Mark Brown
2026-08-15 2:32 ` David Gow
2026-08-14 12:28 ` [PATCH v2 0/4] spi: Fix DMA mapping ownership on partial map failure Andy Shevchenko
2026-08-14 15:49 ` Mark Brown
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