[PATCH 4.17 218/336] soc/tegra: pmc: Dont allocate struct tegra_powergate on stack

[Greg Kroah-Hartman]

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Viresh Kumar <viresh.ku...@linaro.org>

[ Upstream commit 495ac33a3b82f85ed4fbdd9b826c1d2fbc8e9b68 ]

With a later commit an instance of the struct device will be added to
struct genpd and with that the size of the struct tegra_powergate will
be over 1024 bytes. That generates following warning:

drivers/soc/tegra/pmc.c:579:1: warning: the frame size of 1200 bytes is larger 
than 1024 bytes [-Wframe-larger-than=]

Avoid such warnings by allocating the structure dynamically.

Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
Acked-by: Thierry Reding <tred...@nvidia.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/soc/tegra/pmc.c |   20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -559,22 +559,28 @@ EXPORT_SYMBOL(tegra_powergate_remove_cla
 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
                                      struct reset_control *rst)
 {
-       struct tegra_powergate pg;
+       struct tegra_powergate *pg;
        int err;
 
        if (!tegra_powergate_is_available(id))
                return -EINVAL;
 
-       pg.id = id;
-       pg.clks = &clk;
-       pg.num_clks = 1;
-       pg.reset = rst;
-       pg.pmc = pmc;
+       pg = kzalloc(sizeof(*pg), GFP_KERNEL);
+       if (!pg)
+               return -ENOMEM;
 
-       err = tegra_powergate_power_up(&pg, false);
+       pg->id = id;
+       pg->clks = &clk;
+       pg->num_clks = 1;
+       pg->reset = rst;
+       pg->pmc = pmc;
+
+       err = tegra_powergate_power_up(pg, false);
        if (err)
                pr_err("failed to turn on partition %d: %d\n", id, err);
 
+       kfree(pg);
+
        return err;
 }
 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);