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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:43:39 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:43:39 +0000 |
| commit | 27a2c36c9538c7e5536a1b20fd74f0fc911d7950 (patch) | |
| tree | 3101221cb1458bce62f7ae76638517d93f8b64a8 /drivers/ata/libahci_platform.c | |
| parent | Releasing progress-linux version 4.19.260-1progress5u1. (diff) | |
| download | linux-27a2c36c9538c7e5536a1b20fd74f0fc911d7950.tar.xz linux-27a2c36c9538c7e5536a1b20fd74f0fc911d7950.zip | |
Merging upstream version 4.19.269.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/ata/libahci_platform.c')
| -rw-r--r-- | drivers/ata/libahci_platform.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c index 6a55aac0c..63086f90b 100644 --- a/drivers/ata/libahci_platform.c +++ b/drivers/ata/libahci_platform.c @@ -421,14 +421,24 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev, } } - hpriv->nports = child_nodes = of_get_child_count(dev->of_node); + /* + * Too many sub-nodes most likely means having something wrong with + * the firmware. + */ + child_nodes = of_get_child_count(dev->of_node); + if (child_nodes > AHCI_MAX_PORTS) { + rc = -EINVAL; + goto err_out; + } /* * If no sub-node was found, we still need to set nports to * one in order to be able to use the * ahci_platform_[en|dis]able_[phys|regulators] functions. */ - if (!child_nodes) + if (child_nodes) + hpriv->nports = child_nodes; + else hpriv->nports = 1; hpriv->phys = devm_kcalloc(dev, hpriv->nports, sizeof(*hpriv->phys), GFP_KERNEL); |