[PATCH 05/32] x86: Allow writing tables to fail

[Simon Glass]

At present write_tables() can fail but does not report this problem to its
caller. Fix this by changing the return type.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/cpu/cpu.c            | 7 ++++++-
 arch/x86/include/asm/tables.h | 4 +++-
 arch/x86/lib/tables.c         | 5 ++++-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index f8692753963..5c33f02f034 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -200,6 +200,7 @@ __weak void board_final_cleanup(void)
 int last_stage_init(void)
 {
 	struct acpi_fadt __maybe_unused *fadt;
+	int ret;
 
 	board_final_init();
 
@@ -210,7 +211,11 @@ int last_stage_init(void)
 			acpi_resume(fadt);
 	}
 
-	write_tables();
+	ret = write_tables();
+	if (ret) {
+		printf("Failed to write tables\n");
+		return log_msg_ret("table", ret);
+	}
 
 	if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) {
 		fadt = acpi_find_fadt();
diff --git a/arch/x86/include/asm/tables.h b/arch/x86/include/asm/tables.h
index f7c72ed3db0..bf66e79018e 100644
--- a/arch/x86/include/asm/tables.h
+++ b/arch/x86/include/asm/tables.h
@@ -49,8 +49,10 @@ void table_fill_string(char *dest, const char *src, size_t n, char pad);
  * This writes x86 configuration tables, including PIRQ routing table,
  * Multi-Processor table and ACPI table. Whether a specific type of
  * configuration table is written is controlled by a Kconfig option.
+ *
+ * @return 0 if OK, -ENOSPC if table too large
  */
-void write_tables(void);
+int write_tables(void);
 
 /**
  * write_pirq_routing_table() - Write PIRQ routing table
diff --git a/arch/x86/lib/tables.c b/arch/x86/lib/tables.c
index 7bad5dd3032..7099866a78a 100644
--- a/arch/x86/lib/tables.c
+++ b/arch/x86/lib/tables.c
@@ -64,7 +64,7 @@ void table_fill_string(char *dest, const char *src, size_t n, char pad)
 		dest[i] = pad;
 }
 
-void write_tables(void)
+int write_tables(void)
 {
 	u32 rom_table_start = ROM_TABLE_ADDR;
 	u32 rom_table_end;
@@ -91,6 +91,7 @@ void write_tables(void)
 			cfg_tables[i].size = table_size;
 		} else {
 			printf("%d: no memory for configuration tables\n", i);
+			return -ENOSPC;
 		}
 #endif
 
@@ -105,4 +106,6 @@ void write_tables(void)
 	write_coreboot_table(CB_TABLE_ADDR, cfg_tables);
 #endif
 	debug("- done writing tables\n");
+
+	return 0;
 }
-- 
2.28.0.681.g6f77f65b4e-goog