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bus: hisi_lpc: Don't fail probe for unrecognised child devices 

Currently for ACPI-based FW we fail the probe for an unrecognised child
HID.

However, there is FW in the field with LPC child devices having fake HIDs,
namely "IPI0002", which was an IPMI device invented to support the
initial out-of-tree LPC host driver, different from the final mainline
version.

To provide compatibility support for these dodgy FWs, just discard the
unrecognised HIDs instead of failing the probe altogether.

Tested-by: Zengruan Ye <yezengruan@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
This commit is contained in:
John Garry 2019-01-03 19:57:02 +08:00 committed by Wei Xu
parent bfeffd1552
commit 705c0ee8d4
1 changed files with 2 additions and 3 deletions
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5
drivers/bus/hisi_lpc.c
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@ -522,10 +522,9 @@ static int hisi_lpc_acpi_probe(struct device *hostdev)
if (!found) {
dev_warn(hostdev,
"could not find cell for child device (%s)\n",
"could not find cell for child device (%s), discarding\n",
hid);
ret = -ENODEV;
goto fail;
continue;
}
pdev = platform_device_alloc(cell->name, PLATFORM_DEVID_AUTO);