Commit 0a728e0b authored Sep 03, 2019 by Nagarjuna Kristam Committed by Thierry Reding Oct 01, 2019

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>

parent 54ecb8f7

drivers/soc/tegra/fuse/fuse-tegra.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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;

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