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i3c: master: cdns: Annotate struct cdns_i3c_xfer 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 cdns_i3c_xfer. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: "Przemysław Gaj" <pgaj@cadence.com> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: linux-i3c@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230922175014.work.637-kees@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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@ -387,7 +387,7 @@ struct cdns_i3c_xfer {
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struct completion comp;
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int ret;
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unsigned int ncmds;
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struct cdns_i3c_cmd cmds[];
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struct cdns_i3c_cmd cmds[] __counted_by(ncmds);
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};
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struct cdns_i3c_data {
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