Incorporating code review comments.

Signed-off-by: Gail Lyons <[email protected]>

Author: glyons-intel

sycl/doc/EnvironmentVariables.md

@@ -22,7 +22,7 @@ subject to change. Do not rely on these variables in production code.
 | SYCL_DISABLE_EXECUTION_GRAPH_CLEANUP | Any(\*) | Disable cleanup of finished command nodes at host-device synchronization points. |
 | SYCL_THROW_ON_BLOCK | Any(\*) | Throw an exception on attempt to wait for a blocked command.  |
 | SYCL_DEVICELIB_INHIBIT_NATIVE | String of device library extensions (separated by a whitespace) | Do not rely on device native support for devicelib extensions listed in this option. |
-| SYCL_DEVICE_ALLOWLIST | A list of devices and their driver version following the pattern: DeviceName:{{XXX}},DriverVersion:{{X.Y.Z.W}}. Also may contain PlatformName and PlatformVersion | Filter out devices that do not match the pattern specified. Regular expression can be passed and the DPC++ runtime will select only those devices which satisfy the regex.  Special characters, such as parenthesis, must be escaped.  More than one device can be specified using the piping symbol "|".|
+| SYCL_DEVICE_ALLOWLIST | A list of devices and their driver version following the pattern: DeviceName:{{XXX}},DriverVersion:{{X.Y.Z.W}}. Also may contain PlatformName and PlatformVersion | Filter out devices that do not match the pattern specified. Regular expression can be passed and the DPC++ runtime will select only those devices which satisfy the regex. Special characters, such as parenthesis, must be escaped. More than one device can be specified using the piping symbol "|".|
 | SYCL_QUEUE_THREAD_POOL_SIZE | Positive integer | Number of threads in thread pool of queue. |
 | SYCL_DEVICELIB_NO_FALLBACK | Any(\*) | Disable loading and linking of device library images |
 | SYCL_PI_LEVEL0_MAX_COMMAND_LIST_CACHE | Positive integer | Maximum number of oneAPI Level Zero Command lists that can be allocated with no reuse before throwing an "out of resources" error. Default is 20000, threshold may be increased based on resource availabilty and workload demand. |

sycl/source/detail/platform_impl.cpp

@@ -121,7 +121,7 @@ vector_class<platform> platform_impl::get_platforms() {
   return Platforms;
 }
 
-std::string getValue(/*const*/ std::string &AllowList, size_t &Pos,
+std::string getValue(const std::string &AllowList, size_t &Pos,
                      unsigned long int Size) {
   size_t Prev = Pos;
   if ((Pos = AllowList.find("{{", Pos)) == std::string::npos) {