mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue

[platform/kernel/linux-rpi.git] / drivers / mailbox / pcc.c

diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 311e91b..256f18b 100644 (file)
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -461,8 +461,11 @@ static int __init acpi_pcc_probe(void)
        count = acpi_table_parse_entries_array(ACPI_SIG_PCCT,
                        sizeof(struct acpi_table_pcct), proc,
                        ACPI_PCCT_TYPE_RESERVED, MAX_PCC_SUBSPACES);
-       if (count == 0 || count > MAX_PCC_SUBSPACES) {
-               pr_warn("Invalid PCCT: %d PCC subspaces\n", count);
+       if (count <= 0 || count > MAX_PCC_SUBSPACES) {
+               if (count < 0)
+                       pr_warn("Error parsing PCC subspaces from PCCT\n");
+               else
+                       pr_warn("Invalid PCCT: %d PCC subspaces\n", count);
                return -EINVAL;
        }