Commit fccebbdd authored by Gwendal Grignou's avatar Gwendal Grignou Committed by Tzung-Bi Shih
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platform/chrome: cros_ec_lpc: Handle EC without CRS section 



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

Fixes: be4fccb5 ("platform/chrome: cros_ec_lpc: Support direct EC register memory access")
Signed-off-by: default avatarGwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20250114202122.2352277-1-gwendal@chromium.org


Signed-off-by: default avatarTzung-Bi Shih <tzungbi@kernel.org>
parent 15fa0621

drivers/platform/chrome/cros_ec_lpc.c

+1 −5
Original line number Diff line number Diff line
@@ -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);