This is a note to let you know that I've just added the patch titled of: unittest: fix warning on PowerPC frame size warning to the 5.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: of-unittest-fix-warning-on-powerpc-frame-size-warnin.patch and it can be found in the queue-5.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit acaeeb65ed3dc3937977326e76ff0eab4d7874af Author: Jim Quinlan <jim2101024@xxxxxxxxx> Date: Fri Dec 10 13:46:35 2021 -0500 of: unittest: fix warning on PowerPC frame size warning [ Upstream commit a8d61a9112ad0c9216ab45d050991e07bc4f3408 ] The struct device variable "dev_bogus" was triggering this warning on a PowerPC build: drivers/of/unittest.c: In function 'of_unittest_dma_ranges_one.constprop': [...] >> The frame size of 1424 bytes is larger than 1024 bytes [-Wframe-larger-than=] This variable is now dynamically allocated. Fixes: e0d072782c734 ("dma-mapping: introduce DMA range map, supplanting dma_pfn_offset") Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Jim Quinlan <jim2101024@xxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Frank Rowand <frank.rowand@xxxxxxxx> Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Signed-off-by: Rob Herring <robh@xxxxxxxxxx> Link: https://lore.kernel.org/r/20211210184636.7273-2-jim2101024@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 481ba8682ebf4..02c5cd06ad19c 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -911,11 +911,18 @@ static void __init of_unittest_dma_ranges_one(const char *path, if (!rc) { phys_addr_t paddr; dma_addr_t dma_addr; - struct device dev_bogus; + struct device *dev_bogus; - dev_bogus.dma_range_map = map; - paddr = dma_to_phys(&dev_bogus, expect_dma_addr); - dma_addr = phys_to_dma(&dev_bogus, expect_paddr); + dev_bogus = kzalloc(sizeof(struct device), GFP_KERNEL); + if (!dev_bogus) { + unittest(0, "kzalloc() failed\n"); + kfree(map); + return; + } + + dev_bogus->dma_range_map = map; + paddr = dma_to_phys(dev_bogus, expect_dma_addr); + dma_addr = phys_to_dma(dev_bogus, expect_paddr); unittest(paddr == expect_paddr, "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", @@ -925,6 +932,7 @@ static void __init of_unittest_dma_ranges_one(const char *path, &dma_addr, expect_dma_addr, np); kfree(map); + kfree(dev_bogus); } of_node_put(np); #endif