Hi Dan, This patch series addresses a problem seen on the brcmstb ARM platform where dma_debug_init is called by the ARM kernel at fs_initcall time, while some of our callers using the DMA-API were running at arch_initcall time.
Unless CONFIG_DMA_API_DEBUG is set, this is completely silent. First patch introduces a helper function to check whether a DMA-API debug implementation is allowed to proceed, while the second patch introduces an initialization flag and uses the helper. A complete writeup of how and why this crashes is provided in patch 2. Thank you! Florian Fainelli (2): dma-debug: introduce dma_debug_disabled dma-debug: prevent early callers from crashing lib/dma-debug.c | 43 ++++++++++++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 15 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/