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PCI: cadence: Fix DMA range mapping early return error

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[ Upstream commit 1002573ee33efef0988a9a546c075a9fa37d2498 ]

Function cdns_pcie_host_map_dma_ranges() iterates over a PCIe host bridge
DMA ranges using the resource_list_for_each_entry() iterator, returning an
error if cdns_pcie_host_bar_config() fails.

49e427e6bd ("Merge branch 'pci/host-probe-refactor'") botched a merge so
it *always* returned after the first DMA range, even if no error occurred.

Fix the error checking so we return early only when an error occurs.

[bhelgaas: commit log]
Fixes: 49e427e6bd ("Merge branch 'pci/host-probe-refactor'")
Link: https://lore.kernel.org/r/20210216205935.3112661-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Krzysztof Wilczyński 2021-02-16 20:59:35 +00:00 committed by Greg Kroah-Hartman
parent c2f17201d0
commit 1ecbf4f3e9
1 changed files with 3 additions and 2 deletions
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5
drivers/pci/controller/cadence/pcie-cadence-host.c
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@ -321,9 +321,10 @@ static int cdns_pcie_host_map_dma_ranges(struct cdns_pcie_rc *rc)
resource_list_for_each_entry(entry, &bridge->dma_ranges) {
err = cdns_pcie_host_bar_config(rc, entry);
if (err)
if (err) {
dev_err(dev, "Fail to configure IB using dma-ranges\n");
return err;
return err;
}
}
return 0;