net: usb: sr9700: fix byte numbering in comments

The comments describing the RX/TX headers and status response use
a combination of 0- and 1-based indexing, leading to confusion. Correct
the numbering and make it consistent. Also fix a typo "pm" for "pn".

This issue also existed in dm9601 and was fixed in commit 61189c78bda8
("dm9601: trivial comment fixes").

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Link: https://patch.msgid.link/20260113075327.85435-1-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
index 820c4c50697921c59c6466387c21e54bdb334ea9..bd90ac40acdd9847eaad3c085063ad96aabe2ea3 100644 (file)
--- a/drivers/net/usb/sr9700.c
+++ b/drivers/net/usb/sr9700.c
@@ -391,20 +391,20 @@ static int sr9700_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
        int len;
 
        /* skb content (packets) format :
-        *                    p0            p1            p2    ......    pm
+        *                    p1            p2            p3    ......    pn
         *                 /      \
         *            /                \
         *        /                            \
         *  /                                        \
-        * p0b0 p0b1 p0b2 p0b3 ...... p0b(n-4) p0b(n-3)...p0bn
+        * p1b1 p1b2 p1b3 p1b4 ...... p1b(n-4) p1b(n-3)...p1bn
         *
-        * p0 : packet 0
-        * p0b0 : packet 0 byte 0
+        * p1 : packet 1
+        * p1b1 : packet 1 byte 1
         *
-        * b0: rx status
-        * b1: packet length (incl crc) low
-        * b2: packet length (incl crc) high
-        * b3..n-4: packet data
+        * b1: rx status
+        * b2: packet length (incl crc) low
+        * b3: packet length (incl crc) high
+        * b4..n-4: packet data
         * bn-3..bn: ethernet packet crc
         */
        if (unlikely(skb->len < SR_RX_OVERHEAD)) {
@@ -452,12 +452,12 @@ static struct sk_buff *sr9700_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 
        /* SR9700 can only send out one ethernet packet at once.
         *
-        * b0 b1 b2 b3 ...... b(n-4) b(n-3)...bn
+        * b1 b2 b3 b4 ...... b(n-4) b(n-3)...bn
         *
-        * b0: rx status
-        * b1: packet length (incl crc) low
-        * b2: packet length (incl crc) high
-        * b3..n-4: packet data
+        * b1: rx status
+        * b2: packet length (incl crc) low
+        * b3: packet length (incl crc) high
+        * b4..n-4: packet data
         * bn-3..bn: ethernet packet crc
         */
 
@@ -488,14 +488,14 @@ static void sr9700_status(struct usbnet *dev, struct urb *urb)
        u8 *buf;
 
        /* format:
-          b0: net status
-          b1: tx status 1
-          b2: tx status 2
-          b3: rx status
-          b4: rx overflow
-          b5: rx count
-          b6: tx count
-          b7: gpr
+          b1: net status
+          b2: tx status 1
+          b3: tx status 2
+          b4: rx status
+          b5: rx overflow
+          b6: rx count
+          b7: tx count
+          b8: gpr
        */
 
        if (urb->actual_length < 8)