Repeat ioctl when device is busy

Change-Id: I29007c316df610c9410a71a59c5098bd4539b504
Signed-off-by: Lukasz Jobczyk <[email protected]>

Author: LukaszJobczyk

opencl/test/unit_test/linux/main_linux_dll.cpp

@@ -242,6 +242,16 @@ TEST_F(DrmTests, createReturnsDrm) {
     EXPECT_EQ(0, ret);
     EXPECT_EQ(deviceId, lDeviceId);
 
+    ioctlCnt = 0;
+    ioctlSeq[0] = -1;
+    errno = EBUSY;
+    // check if device works, although there was EBUSY error from KMD
+    getParam.param = I915_PARAM_CHIPSET_ID;
+    getParam.value = &lDeviceId;
+    ret = drm->ioctl(DRM_IOCTL_I915_GETPARAM, &getParam);
+    EXPECT_EQ(0, ret);
+    EXPECT_EQ(deviceId, lDeviceId);
+
     ioctlCnt = 0;
     ioctlSeq[0] = -1;
     errno = 0;

shared/source/os_interface/linux/drm_neo.cpp

@@ -65,7 +65,7 @@ int Drm::ioctl(unsigned long request, void *arg) {
     SYSTEM_ENTER();
     do {
         ret = SysCalls::ioctl(getFileDescriptor(), request, arg);
-    } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+    } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EBUSY));
     SYSTEM_LEAVE(request);
     return ret;
 }