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authorKees Cook <keescook@chromium.org>2023-08-17 16:58:42 -0700
committerVinod Koul <vkoul@kernel.org>2023-09-28 16:42:14 +0530
commit7d4b82185521538eab8b0532b9bd7b8c8ca3e63b (patch)
tree9357f7c506db5fd71f28272ea299f5df329d2393 /drivers/dma/hisi_dma.c
parentf1bc0d01cb349da43d55548b57c915ef8fe024c7 (diff)
dmaengine: hisilicon: Annotate struct hisi_dma_dev 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). As found with Coccinelle[1], add __counted_by for struct hisi_dma_dev. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Vinod Koul <vkoul@kernel.org> Cc: Zhou Wang <wangzhou1@hisilicon.com> Cc: Jie Hai <haijie1@huawei.com> Cc: dmaengine@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230817235859.49846-5-keescook@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/hisi_dma.c')
-rw-r--r--drivers/dma/hisi_dma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c
index c1350a36fddd..4c47bff81064 100644
--- a/drivers/dma/hisi_dma.c
+++ b/drivers/dma/hisi_dma.c
@@ -163,7 +163,7 @@ struct hisi_dma_dev {
u32 chan_depth;
enum hisi_dma_reg_layout reg_layout;
void __iomem *queue_base; /* queue region start of register */
- struct hisi_dma_chan chan[];
+ struct hisi_dma_chan chan[] __counted_by(chan_num);
};
#ifdef CONFIG_DEBUG_FS