staging: unisys: refactor ULTRA_check_channel_server()

Rename spar_check_channel_server() to spar_check_channel_server(),
remove unused parameters fileName, lineNumber, and logCtx, update
references to the function and remove unused parameters in macros that
call it, and fix CamelCase names:

typeGuid => typeuuid
channelName => name
expectedMinBytes => expected_min_bytes
actualBytes => actual_bytes
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/common-spar/include/channels/channel.h

@@ -348,6 +348,26 @@ spar_check_channel_client(void __iomem *ch,
 	return 1;
 }
 
+/* Generic function useful for validating any type of channel when it is about
+ * to be initialized by the server of the channel.
+ * Note that <logCtx> is only needed for callers in the EFI environment, and
+ * is used to pass the EFI_DIAG_CAPTURE_PROTOCOL needed to log messages.
+ */
+static inline int spar_check_channel_server(uuid_le typeuuid, char *name,
+					    u64 expected_min_bytes,
+					    u64 actual_bytes)
+{
+	if (expected_min_bytes > 0)	/* caller wants us to verify
+					 * channel size */
+		if (actual_bytes < expected_min_bytes) {
+			pr_err("Channel mismatch on channel=%s(%pUL) field=size expected=0x%-8.8llx actual=0x%-8.8llx\n",
+			       name, &typeuuid, expected_min_bytes,
+			       actual_bytes);
+			return 0;
+		}
+	return 1;
+}
+
 /* Given a file pathname <s> (with '/' or '\' separating directory nodes),
  * returns a pointer to the beginning of a node within that pathname such
  * that the number of nodes from that pointer to the end of the string is

drivers/staging/unisys/common-spar/include/channels/controlvmchannel.h

@@ -52,6 +52,11 @@ static const uuid_le UltraControlvmChannelProtocolGuid =
 				   sizeof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL), \
 				   ULTRA_CONTROLVM_CHANNEL_PROTOCOL_VERSIONID, \
 				   ULTRA_CONTROLVM_CHANNEL_PROTOCOL_SIGNATURE))
+#define ULTRA_CONTROLVM_CHANNEL_OK_SERVER(actualBytes)        \
+	(spar_check_channel_server(UltraControlvmChannelProtocolGuid,	\
+				    "controlvm",			\
+				    sizeof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL), \
+				    actualBytes))
 
 #define MY_DEVICE_INDEX 0
 #define MAX_MACDATA_LEN 8 /* number of bytes for MAC address in config packet */

drivers/staging/unisys/common-spar/include/channels/diagchannel.h

@@ -65,11 +65,11 @@ static const uuid_le UltraDiagChannelProtocolGuid =
 				    sizeof(ULTRA_DIAG_CHANNEL_PROTOCOL), \
 				    ULTRA_DIAG_CHANNEL_PROTOCOL_VERSIONID, \
 				    ULTRA_DIAG_CHANNEL_PROTOCOL_SIGNATURE))
-#define ULTRA_DIAG_CHANNEL_OK_SERVER(actualBytes, logCtx)		\
-	(ULTRA_check_channel_server(UltraDiagChannelProtocolGuid,	\
+#define ULTRA_DIAG_CHANNEL_OK_SERVER(actualBytes)		\
+	(spar_check_channel_server(UltraDiagChannelProtocolGuid,	\
 				   "diag",				\
 				   sizeof(ULTRA_DIAG_CHANNEL_PROTOCOL), \
-				    actualBytes, __FILE__, __LINE__, logCtx))
+				    actualBytes))
 #define MAX_MODULE_NAME_SIZE 128	/* Maximum length of module name... */
 #define MAX_ADDITIONAL_INFO_SIZE 256	/* Maximum length of any additional info
 					 * accompanying event... */

drivers/staging/unisys/common-spar/include/channels/iochannel.h

@@ -65,17 +65,26 @@
 				   "vhba", MIN_IO_CHANNEL_SIZE,	\
 				   ULTRA_VHBA_CHANNEL_PROTOCOL_VERSIONID, \
 				   ULTRA_VHBA_CHANNEL_PROTOCOL_SIGNATURE))
+#define ULTRA_VHBA_CHANNEL_OK_SERVER(actualBytes)		\
+	(spar_check_channel_server(spar_vhba_channel_protocol_uuid,	\
+				   "vhba", MIN_IO_CHANNEL_SIZE, actualBytes))
 #define SPAR_VNIC_CHANNEL_OK_CLIENT(pChannel, logCtx)			\
 	(spar_check_channel_client(pChannel, spar_vnic_channel_protocol_uuid, \
 				   "vnic", MIN_IO_CHANNEL_SIZE,	\
 				   ULTRA_VNIC_CHANNEL_PROTOCOL_VERSIONID, \
 				   ULTRA_VNIC_CHANNEL_PROTOCOL_SIGNATURE))
+#define ULTRA_VNIC_CHANNEL_OK_SERVER(actualBytes)		\
+	(spar_check_channel_server(spar_vnic_channel_protocol_uuid,	\
+				   "vnic", MIN_IO_CHANNEL_SIZE, actualBytes))
 #define SPAR_VSWITCH_CHANNEL_OK_CLIENT(pChannel, logCtx)		\
 	(spar_check_channel_client(pChannel, UltraVswitchChannelProtocolGuid, \
 				   "vswitch", MIN_IO_CHANNEL_SIZE,	\
 				   ULTRA_VSWITCH_CHANNEL_PROTOCOL_VERSIONID, \
 				   ULTRA_VSWITCH_CHANNEL_PROTOCOL_SIGNATURE))
-
+#define ULTRA_VSWITCH_CHANNEL_OK_SERVER(actualBytes)          \
+	(spar_check_channel_server(UltraVswitchChannelProtocolGuid,	\
+				    "vswitch", MIN_IO_CHANNEL_SIZE,	\
+				    actualBytes))
 /*
 * Everything necessary to handle SCSI & NIC traffic between Guest Partition and
 * IO Partition is defined below.  */

drivers/staging/unisys/common-spar/include/channels/vbuschannel.h

@@ -51,6 +51,12 @@ static const uuid_le UltraVbusChannelProtocolGuid =
 				    ULTRA_VBUS_CHANNEL_PROTOCOL_VERSIONID, \
 				    ULTRA_VBUS_CHANNEL_PROTOCOL_SIGNATURE)) \
 
+#define ULTRA_VBUS_CHANNEL_OK_SERVER(actualBytes)    \
+	(spar_check_channel_server(UltraVbusChannelProtocolGuid,	\
+				    "vbus",				\
+				    sizeof(struct ultra_vbus_channel_protocol),\
+				    actualBytes))
+
 #pragma pack(push, 1)		/* both GCC and VC now allow this pragma */
 typedef struct _ULTRA_VBUS_HEADERINFO {
 	u32 structBytes;	/* size of this struct in bytes */