clk: tegra: Use readl_relaxed_poll_timeout_atomic() in tegra210_clock_init()

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[ Upstream commit 22ef01a203 ]

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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Nicolin Chen 2017-09-15 12:10:13 -07:00 • committed by Greg Kroah-Hartman

parent 85dcb3c850

commit a23c8c70b5

1 changed files with 2 additions and 2 deletions

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drivers/clk/tegra/clk-tegra210.c

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