diff options
| author | Nagarjuna Kristam <nkristam@nvidia.com> | 2019-09-03 16:26:52 +0530 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-10-01 17:02:17 +0200 |
| commit | 0a728e0bda7c14921723362af86b0ba30e5d6c79 (patch) | |
| tree | d532e10dd66f5898384b4981555897f43f0e43d1 /drivers/soc/tegra/fuse | |
| parent | 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c (diff) | |
soc/tegra: fuse: Add FUSE clock check in tegra_fuse_readl()
tegra_fuse_readl() can be called from drivers at any time. If this API
is called before tegra_fuse_probe(), we end up enabling the clock before
it is registered. Add a check for the FUSE clock in tegra_fuse_readl()
and propagate any errors.
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra/fuse')
| -rw-r--r-- | drivers/soc/tegra/fuse/fuse-tegra.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c index 3eb44e65b326..58996c6ea767 100644 --- a/drivers/soc/tegra/fuse/fuse-tegra.c +++ b/drivers/soc/tegra/fuse/fuse-tegra.c @@ -186,9 +186,12 @@ u32 __init tegra_fuse_read_early(unsigned int offset) int tegra_fuse_readl(unsigned long offset, u32 *value) { - if (!fuse->read) + if (!fuse->read || !fuse->clk) return -EPROBE_DEFER; + if (IS_ERR(fuse->clk)) + return PTR_ERR(fuse->clk); + *value = fuse->read(fuse, offset); return 0; |