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/openbmc/linux/drivers/clk/tegra/ |
H A D | clk-tegra210.c | diff 22ef01a203d27fee8b7694020b7e722db7efd2a7 Fri Sep 15 14:10:13 CDT 2017 Nicolin Chen <nicoleotsuka@gmail.com> clk: tegra: Use readl_relaxed_poll_timeout_atomic() in tegra210_clock_init()
Below is the call trace of tegra210_init_pllu() function: start_kernel() -> time_init() --> of_clk_init() ---> tegra210_clock_init() ----> tegra210_pll_init() -----> tegra210_init_pllu()
Because the preemption is disabled in the start_kernel before calling time_init, tegra210_init_pllu is actually in an atomic context while it includes a readl_relaxed_poll_timeout that might sleep.
So this patch just changes this readl_relaxed_poll_timeout() to its atomic version.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
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