linux-kernel - [PATCH 2/4] firewire: ohci: remove obsolete debug logging for selfID sequence

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Message-ID: <20250821003017.186752-3-o-takashi@sakamocchi.jp>
Date: Thu, 21 Aug 2025 09:30:15 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: linux1394-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] firewire: ohci: remove obsolete debug logging for selfID sequence

A commit 677ceae19073 ("firewire: core: add tracepoints event for
self_id_sequence") added the "firewire:self_id_sequence" event in v6.11.
A commit 526e21a2aa6f ("firewire: ohci: add tracepoints event for data
of Self-ID DMA") added the "firewire_ohci:self_id_complete" event in
v6.12.

These tracepoints replace the equivalent debug logging. This commit
removes the logging.

Signed-off-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
---
 drivers/firewire/ohci.c | 72 -----------------------------------------
 1 file changed, 72 deletions(-)

diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index d3ed43f4d0c3..8cecdf4c6572 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -394,87 +394,17 @@ MODULE_PARM_DESC(quirks, "Chip quirks (default = 0"
 	")");
 
 #define OHCI_PARAM_DEBUG_AT_AR		1
-#define OHCI_PARAM_DEBUG_SELFIDS	2
 
 static int param_debug;
 module_param_named(debug, param_debug, int, 0644);
 MODULE_PARM_DESC(debug, "Verbose logging, deprecated in v6.11 kernel or later. (default = 0"
 	", AT/AR events = "	__stringify(OHCI_PARAM_DEBUG_AT_AR)
-	", self-IDs = "		__stringify(OHCI_PARAM_DEBUG_SELFIDS)
 	", or a combination, or all = -1)");
 
 static bool param_remote_dma;
 module_param_named(remote_dma, param_remote_dma, bool, 0444);
 MODULE_PARM_DESC(remote_dma, "Enable unfiltered remote DMA (default = N)");
 
-static void log_selfids(struct fw_ohci *ohci, int generation, int self_id_count)
-{
-	static const char *const speed[] = {
-		[0] = "S100", [1] = "S200", [2] = "S400",    [3] = "beta",
-	};
-	static const char *const power[] = {
-		[0] = "+0W",  [1] = "+15W", [2] = "+30W",    [3] = "+45W",
-		[4] = "-3W",  [5] = " ?W",  [6] = "-3..-6W", [7] = "-3..-10W",
-	};
-	static const char port[] = {
-		[PHY_PACKET_SELF_ID_PORT_STATUS_NONE] = '.',
-		[PHY_PACKET_SELF_ID_PORT_STATUS_NCONN] = '-',
-		[PHY_PACKET_SELF_ID_PORT_STATUS_PARENT] = 'p',
-		[PHY_PACKET_SELF_ID_PORT_STATUS_CHILD] = 'c',
-	};
-	struct self_id_sequence_enumerator enumerator = {
-		.cursor = ohci->self_id_buffer,
-		.quadlet_count = self_id_count,
-	};
-
-	if (likely(!(param_debug & OHCI_PARAM_DEBUG_SELFIDS)))
-		return;
-
-	ohci_notice(ohci, "%d selfIDs, generation %d, local node ID %04x\n",
-		    self_id_count, generation, ohci->node_id);
-
-	while (enumerator.quadlet_count > 0) {
-		unsigned int quadlet_count;
-		unsigned int port_index;
-		const u32 *s;
-		int i;
-
-		s = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
-		if (IS_ERR(s))
-			break;
-
-		ohci_notice(ohci,
-		    "selfID 0: %08x, phy %d [%c%c%c] %s gc=%d %s %s%s%s\n",
-		    *s,
-		    phy_packet_self_id_get_phy_id(*s),
-		    port[self_id_sequence_get_port_status(s, quadlet_count, 0)],
-		    port[self_id_sequence_get_port_status(s, quadlet_count, 1)],
-		    port[self_id_sequence_get_port_status(s, quadlet_count, 2)],
-		    speed[*s >> 14 & 3], *s >> 16 & 63,
-		    power[*s >> 8 & 7], *s >> 22 & 1 ? "L" : "",
-		    *s >> 11 & 1 ? "c" : "", *s & 2 ? "i" : "");
-
-		port_index = 3;
-		for (i = 1; i < quadlet_count; ++i) {
-			ohci_notice(ohci,
-			    "selfID n: %08x, phy %d [%c%c%c%c%c%c%c%c]\n",
-			    s[i],
-			    phy_packet_self_id_get_phy_id(s[i]),
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 1)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 2)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 3)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 4)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 5)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 6)],
-			    port[self_id_sequence_get_port_status(s, quadlet_count, port_index + 7)]
-			);
-
-			port_index += 8;
-		}
-	}
-}
-
 static const char *evts[] = {
 	[0x00] = "evt_no_status",	[0x01] = "-reserved-",
 	[0x02] = "evt_long_packet",	[0x03] = "evt_missing_ack",
@@ -2163,8 +2093,6 @@ static void bus_reset_work(struct work_struct *work)
 	if (free_rom)
 		dmam_free_coherent(ohci->card.device, CONFIG_ROM_SIZE, free_rom, free_rom_bus);
 
-	log_selfids(ohci, generation, self_id_count);
-
 	fw_core_handle_bus_reset(&ohci->card, ohci->node_id, generation,
 				 self_id_count, ohci->self_id_buffer,
 				 ohci->csr_state_setclear_abdicate);
-- 
2.48.1