Revert "libhwc2.1: wait for peak refresh rate via sysfs node"

Revert submission 21117545-rr_sysfs

Reason for revert: b/267569180

Reverted changes: /q/submissionid:21117545-rr_sysfs

Change-Id: Ifaaee60913ffc32e8ae9ab7acec327a968468ac7
(cherry picked from commit 334e1fee2f8204c8b30714291d60c19077e6df9f)
Merged-In: Ifaaee60913ffc32e8ae9ab7acec327a968468ac7

1 files changed, 6 insertions, 17 deletions

diff --git a/libhwc2.1/libdevice/BrightnessController.cpp b/libhwc2.1/libdevice/BrightnessController.cpp
index 5b91786..497889a 100644
--- a/libhwc2.1/libdevice/BrightnessController.cpp
+++ b/libhwc2.1/libdevice/BrightnessController.cpp
@@ -713,23 +713,12 @@ int BrightnessController::checkSysfsStatus(const char* file,
 
     char buf[16];
     String8 nodeName;
-    if (std::strstr(file, "%d")) {
-        nodeName.appendFormat(file, mPanelIndex);
-    } else if (std::strstr(file, "%s")) {
-        nodeName.appendFormat(file, mPanelIndex == 0 ? "primary"
-                                    : mPanelIndex == 1 ? "secondary" : "unknown");
-    } else {
-        nodeName = file;
-    }
+    nodeName.appendFormat(file, mPanelIndex);
     UniqueFd fd = open(nodeName.string(), O_RDONLY);
-    if (fd.get() < 0) {
-        ALOGE("%s failed to open sysfs %s: %s", __func__, nodeName.c_str(), strerror(errno));
-        return false;
-    }
 
     int size = read(fd.get(), buf, sizeof(buf));
     if (size <= 0) {
-        ALOGE("%s failed to read from %s: %s", __func__, nodeName.c_str(), strerror(errno));
+        ALOGE("%s failed to read from %s", __func__, kLocalHbmModeFileNode);
         return false;
     }
 
@@ -756,7 +745,7 @@ int BrightnessController::checkSysfsStatus(const char* file,
         }
         int pollRet = poll(&pfd, 1, ns2ms(remainTimeNs));
         if (pollRet == 0) {
-            ALOGW("%s poll %s timeout", __func__, nodeName.c_str());
+            ALOGW("%s poll timeout", __func__);
             // time out
             ret = ETIMEDOUT;
             break;
@@ -771,8 +760,7 @@ int BrightnessController::checkSysfsStatus(const char* file,
                 val = std::string(buf, size - 1);
                 if (std::find(expectedValue.begin(), expectedValue.end(), val) !=
                     expectedValue.end()) {
-                    ret = OK;
-                    break;
+                    ret = 0;
                 } else {
                     std::string values;
                     for (auto& s : expectedValue) {
@@ -783,12 +771,13 @@ int BrightnessController::checkSysfsStatus(const char* file,
                     }
                     ALOGE("%s read %s expected %s after notified", __func__, val.c_str(),
                           values.c_str());
+                    ret = EINVAL;
                 }
             } else {
                 ret = EIO;
                 ALOGE("%s failed to read after notified %d", __func__, errno);
-                break;
             }
+            break;
         } else {
             if (errno == EAGAIN || errno == EINTR) {
                 continue;