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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2023-10-07 13:13:10 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-10-09 10:47:26 +0530 |
| commit | 0481291f0ccbc5147635cf0eb108f9fe5a05ee7d (patch) | |
| tree | deb32bfff86c301681ee9914137842e057822e83 /drivers/dma/mmp_tdma.c | |
| parent | 83c761f568733277ce1f7eb9dc9e890649c29a8c (diff) | |
dmaengine: pxa_dma: Annotate struct pxad_desc_sw with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
To do so, the code needs a little shuffling related to how hw_desc is used
and nb_desc incremented.
The one by one increment is needed for the error handling path, calling
pxad_free_desc(), to work correctly.
So, add a new intermediate variable, desc, to store the result of the
dma_pool_alloc() call.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/1c9ef22826f449a3756bb13a83494e9fe3e0be8b.1696676782.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/mmp_tdma.c')
0 files changed, 0 insertions, 0 deletions