V4L/DVB (12583): firedtv: combine some debug logging code

Shrinks source and kernel object size a bit.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 49 insertions, 60 deletions

diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
index 570bea0dd177..d1b67fe0f011 100644
--- a/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -103,18 +103,19 @@ struct avc_response_frame {
 
 static int avc_debug;
 module_param_named(debug, avc_debug, int, 0644);
-MODULE_PARM_DESC(debug, "Verbose logging bitmask (none (default) = 0"
-        ", FCP subaction(READ DESCRIPTOR) = "           __stringify(AVC_DEBUG_READ_DESCRIPTOR)
-        ", FCP subaction(DSIT) = "                      __stringify(AVC_DEBUG_DSIT)
-        ", FCP subaction(REGISTER_REMOTE_CONTROL) = "   __stringify(AVC_DEBUG_REGISTER_REMOTE_CONTROL)
-        ", FCP subaction(LNB CONTROL) = "               __stringify(AVC_DEBUG_LNB_CONTROL)
-        ", FCP subaction(TUNE QPSK) = "                 __stringify(AVC_DEBUG_TUNE_QPSK)
-        ", FCP subaction(TUNE QPSK2) = "                __stringify(AVC_DEBUG_TUNE_QPSK2)
-        ", FCP subaction(HOST2CA) = "                   __stringify(AVC_DEBUG_HOST2CA)
-        ", FCP subaction(CA2HOST) = "                   __stringify(AVC_DEBUG_CA2HOST)
-        ", Application sent PMT = "                     __stringify(AVC_DEBUG_APPLICATION_PMT)
-        ", FCP payloads(for selected subactions) = "    __stringify(AVC_DEBUG_FCP_PAYLOADS)
-        ", or all = -1)");
+MODULE_PARM_DESC(debug, "Verbose logging (none = 0"
+        ", FCP subactions"
+        ": READ DESCRIPTOR = "          __stringify(AVC_DEBUG_READ_DESCRIPTOR)
+        ", DSIT = "                     __stringify(AVC_DEBUG_DSIT)
+        ", REGISTER_REMOTE_CONTROL = "  __stringify(AVC_DEBUG_REGISTER_REMOTE_CONTROL)
+        ", LNB CONTROL = "              __stringify(AVC_DEBUG_LNB_CONTROL)
+        ", TUNE QPSK = "                __stringify(AVC_DEBUG_TUNE_QPSK)
+        ", TUNE QPSK2 = "               __stringify(AVC_DEBUG_TUNE_QPSK2)
+        ", HOST2CA = "                  __stringify(AVC_DEBUG_HOST2CA)
+        ", CA2HOST = "                  __stringify(AVC_DEBUG_CA2HOST)
+        "; Application sent PMT = "     __stringify(AVC_DEBUG_APPLICATION_PMT)
+        ", FCP payloads = "             __stringify(AVC_DEBUG_FCP_PAYLOADS)
+        ", or a combination, or all = -1)");
 
 static const char *debug_fcp_ctype(unsigned int ctype)
 {
@@ -135,71 +136,59 @@ static const char *debug_fcp_opcode(unsigned int opcode,
                                     const u8 *data, int length)
 {
         switch (opcode) {
-        case AVC_OPCODE_VENDOR:                 break;
-        case AVC_OPCODE_READ_DESCRIPTOR:        return "ReadDescriptor";
-        case AVC_OPCODE_DSIT:                   return "DirectSelectInfo.Type";
-        case AVC_OPCODE_DSD:                    return "DirectSelectData";
-        default:                                return "?";
-        }
-
-        if (length < 7 ||
-            data[3] != SFE_VENDOR_DE_COMPANYID_0 ||
-            data[4] != SFE_VENDOR_DE_COMPANYID_1 ||
-            data[5] != SFE_VENDOR_DE_COMPANYID_2)
-                return "Vendor";
-
-        switch (data[6]) {
-        case SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL: return "RegisterRC";
-        case SFE_VENDOR_OPCODE_LNB_CONTROL:             return "LNBControl";
-        case SFE_VENDOR_OPCODE_TUNE_QPSK:               return "TuneQPSK";
-        case SFE_VENDOR_OPCODE_TUNE_QPSK2:              return "TuneQPSK2";
-        case SFE_VENDOR_OPCODE_HOST2CA:                 return "Host2CA";
-        case SFE_VENDOR_OPCODE_CA2HOST:                 return "CA2Host";
-        }
-        return "Vendor";
-}
-
-static int debug_fcp_opcode_flag_set(unsigned int opcode,
-                                     const u8 *data, int length)
-{
-        switch (opcode) {
-        case AVC_OPCODE_VENDOR:                 break;
-        case AVC_OPCODE_READ_DESCRIPTOR:        return avc_debug & AVC_DEBUG_READ_DESCRIPTOR;
-        case AVC_OPCODE_DSIT:                   return avc_debug & AVC_DEBUG_DSIT;
-        case AVC_OPCODE_DSD:                    return avc_debug & AVC_DEBUG_DSD;
-        default:                                return 1;
+        case AVC_OPCODE_VENDOR:
+                break;
+        case AVC_OPCODE_READ_DESCRIPTOR:
+                return avc_debug & AVC_DEBUG_READ_DESCRIPTOR ?
+                                "ReadDescriptor" : NULL;
+        case AVC_OPCODE_DSIT:
+                return avc_debug & AVC_DEBUG_DSIT ?
+                                "DirectSelectInfo.Type" : NULL;
+        case AVC_OPCODE_DSD:
+                return avc_debug & AVC_DEBUG_DSD ? "DirectSelectData" : NULL;
+        default:
+                return "Unknown";
         }
 
         if (length < 7 ||
             data[3] != SFE_VENDOR_DE_COMPANYID_0 ||
             data[4] != SFE_VENDOR_DE_COMPANYID_1 ||
             data[5] != SFE_VENDOR_DE_COMPANYID_2)
-                return 1;
+                return "Vendor/Unknown";
 
         switch (data[6]) {
-        case SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL: return avc_debug & AVC_DEBUG_REGISTER_REMOTE_CONTROL;
-        case SFE_VENDOR_OPCODE_LNB_CONTROL:             return avc_debug & AVC_DEBUG_LNB_CONTROL;
-        case SFE_VENDOR_OPCODE_TUNE_QPSK:               return avc_debug & AVC_DEBUG_TUNE_QPSK;
-        case SFE_VENDOR_OPCODE_TUNE_QPSK2:              return avc_debug & AVC_DEBUG_TUNE_QPSK2;
-        case SFE_VENDOR_OPCODE_HOST2CA:                 return avc_debug & AVC_DEBUG_HOST2CA;
-        case SFE_VENDOR_OPCODE_CA2HOST:                 return avc_debug & AVC_DEBUG_CA2HOST;
+        case SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL:
+                return avc_debug & AVC_DEBUG_REGISTER_REMOTE_CONTROL ?
+                                "RegisterRC" : NULL;
+        case SFE_VENDOR_OPCODE_LNB_CONTROL:
+                return avc_debug & AVC_DEBUG_LNB_CONTROL ? "LNBControl" : NULL;
+        case SFE_VENDOR_OPCODE_TUNE_QPSK:
+                return avc_debug & AVC_DEBUG_TUNE_QPSK ? "TuneQPSK" : NULL;
+        case SFE_VENDOR_OPCODE_TUNE_QPSK2:
+                return avc_debug & AVC_DEBUG_TUNE_QPSK2 ? "TuneQPSK2" : NULL;
+        case SFE_VENDOR_OPCODE_HOST2CA:
+                return avc_debug & AVC_DEBUG_HOST2CA ? "Host2CA" : NULL;
+        case SFE_VENDOR_OPCODE_CA2HOST:
+                return avc_debug & AVC_DEBUG_CA2HOST ? "CA2Host" : NULL;
         }
-        return 1;
+        return "Vendor/Unknown";
 }
 
 static void debug_fcp(const u8 *data, int length)
 {
-        unsigned int subunit_type, subunit_id, op;
-        const char *prefix = data[0] > 7 ? "FCP <- " : "FCP -> ";
+        unsigned int subunit_type, subunit_id, opcode;
+        const char *op, *prefix;
 
+        prefix       = data[0] > 7 ? "FCP <- " : "FCP -> ";
         subunit_type = data[1] >> 3;
-        subunit_id = data[1] & 7;
-        op = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
-        if (debug_fcp_opcode_flag_set(op, data, length)) {
+        subunit_id   = data[1] & 7;
+        opcode       = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
+        op           = debug_fcp_opcode(opcode, data, length);
+
+        if (op) {
                 printk(KERN_INFO "%ssu=%x.%x l=%d: %-8s - %s\n",
                        prefix, subunit_type, subunit_id, length,
-                       debug_fcp_ctype(data[0]),
-                       debug_fcp_opcode(op, data, length));
+                       debug_fcp_ctype(data[0]), op);
                 if (avc_debug & AVC_DEBUG_FCP_PAYLOADS)
                         print_hex_dump(KERN_INFO, prefix, DUMP_PREFIX_NONE,
                                        16, 1, data, length, false);