amd_pmc: Backport additional delay_suspend patches for linux-6.6.y

index d5b543f74a22..b09512368877 100644
@@ -811,6 +811,20 @@ static bool amd_pmc_intermediate_wakeup_need_delay(struct amd_pmc_dev *pdev)
 
 static bool amd_pmc_want_suspend_delay(struct amd_pmc_dev *pdev)
 {
+	/*
+	 * intermediate_wakeup implies that the machine didn't get to deepest sleep
+	 * state before - otherwise this function isn't called in amd_pmc_s2idle_check()
+	 * because amd_pmc_intermediate_wakeup_need_delay() returns true first.
+	 * On some IdeaPads that happens when charging, because the EC seems
+	 * to send lots of messages then that wake the machine.
+	 *
+	 * But even in that case, the sleep here is necessary (on those IdeaPads),
+	 * otherwise they wake up completely (resume) after a few seconds.
+	 * So this variable is only used to avoid spamming dmesg on each
+	 * intermediate wakeup.
+	 */
+	bool intermediate_wakeup = !pdev->is_first_check_after_suspend;
+
 	/*
 	 * Some Lenovo Laptops (like different IdeaPad 3 Slims) need some
 	 * me-time before sleeping or they get uncooperative after waking

@@ -829,17 +843,20 @@ static bool amd_pmc_want_suspend_delay(struct amd_pmc_dev *pdev)
 		 * disabled with disable_workarounds or delay_suspend=0
 		 */
 		if (delay_suspend == 1 || (delay_suspend == -1 && !disable_workarounds)) {
-			dev_info(pdev->dev, "Delaying suspend by 2.5s to avoid platform bug\n");
+			if (!intermediate_wakeup)
+				dev_info(pdev->dev, "Delaying suspend by 2.5s to avoid platform bug\n");
 			return true;
 		}
-		dev_info(pdev->dev, "Not delaying suspend because of module parameter, even though your device is assumed to need it!\n");
+		if (!intermediate_wakeup)
+			dev_info(pdev->dev, "Not delaying suspend because of module parameter, even though your device is assumed to need it!\n");
 	} else if (delay_suspend == 1) {
-		dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: [email protected] so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
-			 dmi_get_system_info(DMI_SYS_VENDOR),
-			 dmi_get_system_info(DMI_PRODUCT_NAME),
-			 dmi_get_system_info(DMI_PRODUCT_FAMILY),
-			 dmi_get_system_info(DMI_BOARD_VENDOR),
-			 dmi_get_system_info(DMI_BOARD_NAME));
+		if (!intermediate_wakeup)
+			dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: [email protected] so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
+				 dmi_get_system_info(DMI_SYS_VENDOR),
+				 dmi_get_system_info(DMI_PRODUCT_NAME),
+				 dmi_get_system_info(DMI_PRODUCT_FAMILY),
+				 dmi_get_system_info(DMI_BOARD_VENDOR),
+				 dmi_get_system_info(DMI_BOARD_NAME));
 		return true;
 	}
 	return false;

@@ -852,6 +869,9 @@ static void amd_pmc_s2idle_prepare(void)
 	u8 msg;
 	u32 arg = 1;
 
+	/* Reset this variable because this is a fresh suspend */
+	pdev->is_first_check_after_suspend = true;
+
 	/* Reset and Start SMU logging - to monitor the s0i3 stats */
 	amd_pmc_setup_smu_logging(pdev);
 

@@ -891,6 +911,9 @@ static void amd_pmc_s2idle_check(void)
 	rc = amd_pmc_write_stb(pdev, AMD_PMC_STB_S2IDLE_CHECK);
 	if (rc)
 		dev_err(pdev->dev, "error writing to STB: %d\n", rc);
+
+	/* remember that first check after suspend is done (until next prepare) */
+	pdev->is_first_check_after_suspend = false;
 }
 
 static int amd_pmc_dump_data(struct amd_pmc_dev *pdev)

index 5e7b8d5dc5d6..bea65810de5a 100644
@@ -37,6 +37,7 @@ struct amd_pmc_dev {
 	struct dentry *dbgfs_dir;
 	struct quirk_entry *quirks;
 	bool disable_8042_wakeup;
+	bool is_first_check_after_suspend;
 };
 
 void amd_pmc_process_restore_quirks(struct amd_pmc_dev *dev);

index b09512368877..bf6c7ca247e2 100644
@@ -852,11 +852,11 @@ static bool amd_pmc_want_suspend_delay(struct amd_pmc_dev *pdev)
 	} else if (delay_suspend == 1) {
 		if (!intermediate_wakeup)
 			dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: [email protected] so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
-				 dmi_get_system_info(DMI_SYS_VENDOR),
-				 dmi_get_system_info(DMI_PRODUCT_NAME),
-				 dmi_get_system_info(DMI_PRODUCT_FAMILY),
-				 dmi_get_system_info(DMI_BOARD_VENDOR),
-				 dmi_get_system_info(DMI_BOARD_NAME));
+				 dmi_get_system_info(DMI_SYS_VENDOR) ?: "(Unknown)",
+				 dmi_get_system_info(DMI_PRODUCT_NAME) ?: "(Unknown)",
+				 dmi_get_system_info(DMI_PRODUCT_FAMILY) ?: "(Unknown)",
+				 dmi_get_system_info(DMI_BOARD_VENDOR) ?: "(Unknown)",
+				 dmi_get_system_info(DMI_BOARD_NAME) ?: "(Unknown)");
 		return true;
 	}
 	return false;