From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 21 Apr 2017 14:24:33 +0000 (-0700)
Subject: x86: baytrail: Conditionally report S3 in the ACPI table
X-Git-Tag: v2017.07-rc1~254^2~23
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=e652e1304a9f3b59b3e47005ea19b5b6a3e799d1;p=u-boot

x86: baytrail: Conditionally report S3 in the ACPI table

When U-Boot is built without ACPI S3 support, it should not report
S3 in the ACPI table otherwise when kernel does STR it won't work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stefan Roese <sr@denx.de>
---

diff --git a/arch/x86/include/asm/arch-baytrail/acpi/sleepstates.asl b/arch/x86/include/asm/arch-baytrail/acpi/sleepstates.asl
index eb5ae76186..5600723084 100644
--- a/arch/x86/include/asm/arch-baytrail/acpi/sleepstates.asl
+++ b/arch/x86/include/asm/arch-baytrail/acpi/sleepstates.asl
@@ -8,6 +8,8 @@
  */
 
 Name(\_S0, Package() {0x0, 0x0, 0x0, 0x0})
+#ifdef CONFIG_HAVE_ACPI_RESUME
 Name(\_S3, Package() {0x5, 0x0, 0x0, 0x0})
+#endif
 Name(\_S4, Package() {0x6, 0x0, 0x0, 0x0})
 Name(\_S5, Package() {0x7, 0x0, 0x0, 0x0})
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h
index 7d5efea224..b4ca4731a5 100644
--- a/arch/x86/include/asm/global_data.h
+++ b/arch/x86/include/asm/global_data.h
@@ -100,7 +100,7 @@ struct arch_global_data {
 	u32 high_table_limit;
 #endif
 #ifdef CONFIG_HAVE_ACPI_RESUME
-	int prev_sleep_state;		/* Previous sleep state */
+	int prev_sleep_state;		/* Previous sleep state ACPI_S0/1../5 */
 #endif
 };