From: Sunyoung Kang <sy0816.kang@samsung.com>
Date: Thu, 25 Oct 2018 06:32:10 +0000 (+0900)
Subject: [RAMEN9610-10029][COMMON] media: mfc: add to check clock before register dump
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a3a4124c6963afed2183e3b6938114a0b640d8c9;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[RAMEN9610-10029][COMMON] media: mfc: add to check clock before register dump

This adds to check the clock and power state before register dump.

Change-Id: I315b6346c6175232a87453f603292fe8a547ff83
Signed-off-by: Sunyoung Kang <sy0816.kang@samsung.com>
---

diff --git a/drivers/media/platform/exynos/mfc/mfc_watchdog.c b/drivers/media/platform/exynos/mfc/mfc_watchdog.c
index 66b59109a2bc..df445f258d45 100644
--- a/drivers/media/platform/exynos/mfc/mfc_watchdog.c
+++ b/drivers/media/platform/exynos/mfc/mfc_watchdog.c
@@ -57,6 +57,13 @@ static void __mfc_dump_regs(struct mfc_dev *dev)
 	pr_err("-----------dumping MFC registers (SFR base = 0x%p, dev = 0x%p)\n",
 				dev->regs_base, dev);
 
+	if (!mfc_pm_get_pwr_ref_cnt(dev) || !mfc_pm_get_clk_ref_cnt(dev)) {
+		pr_err("Power(%d) or clock(%d) is not enabled\n",
+				mfc_pm_get_pwr_ref_cnt(dev),
+				mfc_pm_get_clk_ref_cnt(dev));
+		return;
+	}
+
 	mfc_enable_all_clocks(dev);
 
 	for (i = 0; i < MFC_SFR_AREA_COUNT; i++) {
@@ -367,6 +374,14 @@ static void __mfc_dump_info_without_regs(struct mfc_dev *dev)
 static void __mfc_dump_info(struct mfc_dev *dev)
 {
 	__mfc_dump_info_without_regs(dev);
+
+	if (!mfc_pm_get_pwr_ref_cnt(dev) || !mfc_pm_get_clk_ref_cnt(dev)) {
+		pr_err("Power(%d) or clock(%d) is not enabled\n",
+				mfc_pm_get_pwr_ref_cnt(dev),
+				mfc_pm_get_clk_ref_cnt(dev));
+		return;
+	}
+
 	__mfc_save_logging_sfr(dev);
 	__mfc_dump_buffer_info(dev);
 	__mfc_dump_regs(dev);