{bp-19206} arch/arm: fix DMA transfers with sizes smaller than 4 bytes.#19282
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When the buffer to send has a size not multiple of 4 bytes, 4-byte words are sent correctly, but when the code reaches the section to send the remaining bytes (1, 2 or 3) it was taking the remaining byte count as origin of the copy, instead of the buffer (as it should). This commit fixes it to correctly copy from the buffer pointer. Signed-off-by: Carlos Sanchez <carlossanchez@geotab.com>
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acassis
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Jul 3, 2026
linguini1
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Jul 3, 2026
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Summary
When the buffer to send has a size not multiple of 4 bytes, 4-byte words are sent correctly, but when the code reaches the section to send the remaining bytes (1, 2 or 3) it was taking the remaining byte count as origin of the copy, instead of the buffer (as it should). This commit fixes it to correctly copy from the buffer pointer.
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