usb*: Minor cosmetics.

3 files changed, 16 insertions, 14 deletions

diff --git a/decoders/usb_packet/pd.py b/decoders/usb_packet/pd.py
index 8d1de65..c159202 100644
--- a/decoders/usb_packet/pd.py
+++ b/decoders/usb_packet/pd.py
@@ -358,7 +358,7 @@ class Decoder(srd.Decoder):
         elif pidname in ('ACK', 'NAK', 'STALL', 'NYET', 'ERR'):
             pass # Nothing to do, these only have SYNC+PID+EOP fields.
         elif pidname in ('PRE'):
-            pass # Nothing to do, PRE  only has SYNC+PID fields.
+            pass # Nothing to do, PRE only has SYNC+PID fields.
         else:
             pass # TODO: Handle 'SPLIT' and possibly 'Reserved' packets.
 
diff --git a/decoders/usb_request/pd.py b/decoders/usb_request/pd.py
index 4526e69..61dedb1 100644
--- a/decoders/usb_request/pd.py
+++ b/decoders/usb_request/pd.py
@@ -270,8 +270,8 @@ class Decoder(srd.Decoder):
             # Issue PCAP 'SUBMIT' packet.
             ts = self.ts_from_samplenum(ss)
             pkt = pcap_usb_pkt(request, ts, True)
-            self.putb(ss, (0, pkt.record_header()))
-            self.putb(ss, (0, pkt.packet()))
+            self.putb(ss, [0, pkt.record_header()])
+            self.putb(ss, [0, pkt.packet()])
 
         if request_end == 1:
             # Write annotation.
@@ -288,8 +288,8 @@ class Decoder(srd.Decoder):
             # Issue PCAP 'COMPLETE' packet.
             ts = self.ts_from_samplenum(es)
             pkt = pcap_usb_pkt(request, ts, False)
-            self.putb(ss, (0, pkt.record_header()))
-            self.putb(ss, (0, pkt.packet()))
+            self.putb(ss, [0, pkt.record_header()])
+            self.putb(ss, [0, pkt.packet()])
             del self.request[(addr, ep)]
 
     def decode(self, ss, es, data):
@@ -308,9 +308,10 @@ class Decoder(srd.Decoder):
                 return
             if self.transaction_state == 'TOKEN RECEIVED':
                 transaction_timeout = self.transaction_es
-                # token length is 35 bits, timeout is 16..18 bit times (USB 2.0 7.1.19.1)
+                # Token length is 35 bits, timeout is 16..18 bit times
+                # (USB 2.0 7.1.19.1).
                 transaction_timeout += int((self.transaction_es - self.transaction_ss) / 2)
-                if (ss > transaction_timeout):
+                if ss > transaction_timeout:
                     self.transaction_es = transaction_timeout
                     self.handshake = 'timeout'
                     self.handle_transfer()
diff --git a/decoders/usb_signalling/pd.py b/decoders/usb_signalling/pd.py
index cea579a..c60075c 100644
--- a/decoders/usb_signalling/pd.py
+++ b/decoders/usb_signalling/pd.py
@@ -69,10 +69,11 @@ symbols = {
         (0, 1): 'LS_J',
         (1, 1): 'SE1',
     },
-# After a PREamble PID, the bus segment between Host and Hub uses LS signalling
-# rate and FS signalling polarity (USB 2.0 spec, 11.8.4: "For both upstream and
-# downstream low-speed data, the hub is responsible for inverting the polarity of
-# the data before transmitting to/from a low-speed port."
+    # After a PREamble PID, the bus segment between Host and Hub uses LS
+    # signalling rate and FS signalling polarity (USB 2.0 spec, 11.8.4: "For
+    # both upstream and downstream low-speed data, the hub is responsible for
+    # inverting the polarity of the data before transmitting to/from a
+    # low-speed port.").
     'low-speed-rp': {
         # (<dp>, <dm>): <symbol/state>
         (0, 0): 'SE0',
@@ -83,8 +84,8 @@ symbols = {
 }
 
 bitrates = {
-    'low-speed': 1500000,   # 1.5Mb/s (+/- 1.5%)
-    'low-speed-rp': 1500000,   # 1.5Mb/s (+/- 1.5%)
+    'low-speed': 1500000, # 1.5Mb/s (+/- 1.5%)
+    'low-speed-rp': 1500000, # 1.5Mb/s (+/- 1.5%)
     'full-speed': 12000000, # 12Mb/s (+/- 0.25%)
     'automatic': None
 }
@@ -201,7 +202,7 @@ class Decoder(srd.Decoder):
         if sym != 'K' or self.oldsym != 'J':
             return
         self.consecutive_ones = 0
-        self.bits = ""
+        self.bits = ''
         self.update_bitrate()
         self.samplepos = self.samplenum - (self.bitwidth / 2) + 0.5
         self.set_new_target_samplenum()