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iommu/arm-smmu: Defer SMMU probe if clock-tree is not ready

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A few clocks like gpu_ahb_clk may be available late on some platforms
like on boards that use an I2C-controlled off-SoC power regulator.
Defer SMMU probe if clock-tree is not ready.

CRs-fixed: 971957
Change-Id: I3f13b36affa0a904bda7175d0dacff298794a906
Signed-off-by: Mathew Joseph Karimpanal <mkarim@codeaurora.org>
This commit is contained in:
Mathew Joseph Karimpanal 2016-03-16 11:48:34 -07:00 • committed by David Keitel
parent 16a9044333
commit a8bd7f67dc
1 changed files with 1 additions and 1 deletions
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drivers/iommu/arm-smmu.c
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@ -3237,7 +3237,7 @@ static int arm_smmu_init_clocks(struct arm_smmu_device *smmu)
if (IS_ERR(c)) {
dev_err(dev, "Couldn't get clock: %s",
cname);
return -ENODEV;
return PTR_ERR(c);
}
if (clk_get_rate(c) == 0) {