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platform/chrome: cros_ec_lpc: Handle EC without CRS section

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Fix logic to support GOOG0004 device without CRS section.
Instead of failing, assume there are not memory mapped EC registers.

Fixes: be4fccb5e1 ("platform/chrome: cros_ec_lpc: Support direct EC register memory access")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20250114202122.2352277-1-gwendal@chromium.org
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
This commit is contained in:
Gwendal Grignou
2025-01-14 12:21:22 -08:00
committed by Tzung-Bi Shih
parent 15fa0621d7
commit fccebbdde2
1 changed files with 1 additions and 5 deletions
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6
drivers/platform/chrome/cros_ec_lpc.c
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@@ -562,11 +562,7 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
*/
status = acpi_walk_resources(adev->handle, METHOD_NAME__CRS,
cros_ec_lpc_resources, ec_lpc);
if (ACPI_FAILURE(status)) {
dev_err(dev, "failed to get resources\n");
return -ENODEV;
}
if (ec_lpc->mem32.address_length) {
if (ACPI_SUCCESS(status) && ec_lpc->mem32.address_length) {
ec_lpc->base = devm_ioremap(dev,
ec_lpc->mem32.address,
ec_lpc->mem32.address_length);