tegra_fuse_readl() can be called from drivers at any time. If this API is called before tegra_fuse_probe(), we end up enabling clock before it is registered. Add check for fuse clock in tegra_fuse_readl() and return corresponding error if any.
Signed-off-by: Nagarjuna Kristam <[email protected]> --- V2: - Added Null and other error checks for fuse->clk. --- drivers/soc/tegra/fuse/fuse-tegra.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c index 3eb44e6..58996c6 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; -- 2.7.4
