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clk: sifive: allocate sufficient memory for struct __prci_data 

[ Upstream commit d0a5fdf4cc ]

The (struct __prci_data).hw_clks.hws is an array with dynamic elements.
Using struct_size(pd, hw_clks.hws, ARRAY_SIZE(__prci_init_clocks))
instead of sizeof(*pd) to get the correct memory size of
struct __prci_data for sifive/fu540-prci. After applying this
modifications, the kernel runs smoothly with CONFIG_SLAB_FREELIST_RANDOM
enabled on the HiFive unleashed board.

Fixes: 30b8e27e3b ("clk: sifive: add a driver for the SiFive FU540 PRCI IP block")
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Vincent Chen 2020-06-23 09:24:17 +08:00 committed by Sasha Levin
parent b78bae5ab3
commit 0935afc397
1 changed files with 4 additions and 1 deletions
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5
drivers/clk/sifive/fu540-prci.c
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@ -586,7 +586,10 @@ static int sifive_fu540_prci_probe(struct platform_device *pdev)
struct __prci_data *pd;
int r;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
pd = devm_kzalloc(dev,
struct_size(pd, hw_clks.hws,
ARRAY_SIZE(__prci_init_clocks)),
GFP_KERNEL);
if (!pd)
return -ENOMEM;