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authorJon Hunter <jonathanh@nvidia.com>2016-06-28 13:38:23 +0300
committerThierry Reding <treding@nvidia.com>2016-06-30 12:48:39 +0300
commit403db2d21c8f8576d38211e5ec17d149c49e528b (patch)
tree8ced5602c41e68baf4c82513cdd66f6e75a84798 /drivers/soc/tegra
parent05cfb988a4d08f84abd2f474d8dd771e7528d975 (diff)
downloadlinux-403db2d21c8f8576d38211e5ec17d149c49e528b.tar.xz
soc/tegra: pmc: Ensure powergate is available when powering on
The function tegra_power_sequence_power_up() is a public function used to power on a partition. When this function is called, we do not check to see if the partition being powered up is valid/available. Fix this by checking to see that the partition is valid/available. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra')
-rw-r--r--drivers/soc/tegra/pmc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 8a421a0b1ece..52a9e9703668 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -549,6 +549,9 @@ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
struct tegra_powergate pg;
int err;
+ if (!tegra_powergate_is_available(id))
+ return -EINVAL;
+
pg.id = id;
pg.clks = &clk;
pg.num_clks = 1;