iommu/arm-smmu: Defer SMMU probe if clock-tree is not ready
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>
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 69a922a..f337776 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -2731,7 +2731,7 @@
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) {