openmptcprouter/6.1/target/linux/bcm27xx/patches-6.1/950-0991-Revert-brcmfmac-Read-alternative-firmware-names-from.patch

From c41443ed9e433b74ad4db7fdccb002431583f264 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Mon, 12 Jun 2023 15:22:20 +0100
Subject: [PATCH] Revert "brcmfmac: Read alternative firmware names from DT"

This reverts commit 5dba6ec6f4f2ac9ed8556116481b107e50e15251.

With careful use of qualified firmware names there is no need for the
ability to override the device names based on Device Tree properties.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
 .../wireless/broadcom/brcm80211/brcmfmac/of.c | 36 -------------
 .../wireless/broadcom/brcm80211/brcmfmac/of.h |  7 ---
 .../broadcom/brcm80211/brcmfmac/sdio.c        | 52 ++-----------------
 3 files changed, 4 insertions(+), 91 deletions(-)

--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -11,7 +11,6 @@
 #include "debug.h"
 #include "core.h"
 #include "common.h"
-#include "firmware.h"
 #include "of.h"
 
 static int brcmf_of_get_country_codes(struct device *dev,
@@ -137,38 +136,3 @@ void brcmf_of_probe(struct device *dev,
 	sdio->oob_irq_nr = irq;
 	sdio->oob_irq_flags = irqf;
 }
-
-struct brcmf_firmware_mapping *
-brcmf_of_fwnames(struct device *dev, u32 *fwname_count)
-{
-	struct device_node *np = dev->of_node;
-	struct brcmf_firmware_mapping *fwnames;
-	struct device_node *map_np, *fw_np;
-	int of_count;
-	int count = 0;
-
-	map_np = of_get_child_by_name(np, "firmwares");
-	of_count = of_get_child_count(map_np);
-	if (!of_count)
-		return NULL;
-
-	fwnames = devm_kcalloc(dev, of_count,
-			       sizeof(struct brcmf_firmware_mapping),
-			       GFP_KERNEL);
-
-	for_each_child_of_node(map_np, fw_np)
-	{
-		struct brcmf_firmware_mapping *cur = &fwnames[count];
-
-		if (of_property_read_u32(fw_np, "chipid", &cur->chipid) ||
-		    of_property_read_u32(fw_np, "revmask", &cur->revmask))
-			continue;
-		cur->fw_base = of_get_property(fw_np, "fw_base", NULL);
-		if (cur->fw_base)
-			count++;
-	}
-
-	*fwname_count = count;
-
-	return count ? fwnames : NULL;
-}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.h
@@ -5,16 +5,9 @@
 #ifdef CONFIG_OF
 void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
 		    struct brcmf_mp_device *settings);
-struct brcmf_firmware_mapping *
-brcmf_of_fwnames(struct device *dev, u32 *map_count);
 #else
 static void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
 			   struct brcmf_mp_device *settings)
 {
 }
-static struct brcmf_firmware_mapping *
-brcmf_of_fwnames(struct device *dev, u32 *map_count)
-{
-	return NULL;
-}
 #endif /* CONFIG_OF */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -35,7 +35,6 @@
 #include "core.h"
 #include "common.h"
 #include "bcdc.h"
-#include "of.h"
 
 #define DCMD_RESP_TIMEOUT	msecs_to_jiffies(2500)
 #define CTL_DONE_TIMEOUT	msecs_to_jiffies(2500)
@@ -4409,9 +4408,7 @@ fail:
 }
 
 static struct brcmf_fw_request *
-brcmf_sdio_prepare_fw_request(struct brcmf_sdio *bus,
-			      const struct brcmf_firmware_mapping *fwmap,
-			      int fwmap_count)
+brcmf_sdio_prepare_fw_request(struct brcmf_sdio *bus)
 {
 	struct brcmf_fw_request *fwreq;
 	struct brcmf_fw_name fwnames[] = {
@@ -4421,7 +4418,8 @@ brcmf_sdio_prepare_fw_request(struct brc
 	};
 
 	fwreq = brcmf_fw_alloc_request(bus->ci->chip, bus->ci->chiprev,
-				       fwmap, fwmap_count,
+				       brcmf_sdio_fwnames,
+				       ARRAY_SIZE(brcmf_sdio_fwnames),
 				       fwnames, ARRAY_SIZE(fwnames));
 	if (!fwreq)
 		return NULL;
@@ -4435,44 +4433,12 @@ brcmf_sdio_prepare_fw_request(struct brc
 	return fwreq;
 }
 
-static void brcmf_sdio_of_firmware_callback(struct device *dev, int err,
-					    struct brcmf_fw_request *fwreq)
-{
-	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
-	struct brcmf_sdio_dev *sdiod = bus_if->bus_priv.sdio;
-	struct brcmf_sdio *bus = sdiod->bus;
-
-	brcmf_dbg(TRACE, "Enter: dev=%s, err=%d\n", dev_name(dev), err);
-
-	if (err) {
-		/* Try again with the standard firmware names */
-		kfree(fwreq);
-		fwreq = brcmf_sdio_prepare_fw_request(bus,
-						      brcmf_sdio_fwnames,
-						      ARRAY_SIZE(brcmf_sdio_fwnames));
-		if (!fwreq) {
-			err = -ENOMEM;
-			goto fail;
-		}
-
-		err = brcmf_fw_get_firmwares(sdiod->dev, fwreq,
-				     brcmf_sdio_firmware_callback);
-		if (!err)
-			return;
-	}
-
-fail:
-	brcmf_sdio_firmware_callback(dev, err, fwreq);
-}
-
 struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
 {
 	int ret;
 	struct brcmf_sdio *bus;
 	struct workqueue_struct *wq;
 	struct brcmf_fw_request *fwreq;
-	struct brcmf_firmware_mapping *of_fwnames;
-	u32 of_fwcount;
 
 	brcmf_dbg(TRACE, "Enter\n");
 
@@ -4555,23 +4521,13 @@ struct brcmf_sdio *brcmf_sdio_probe(stru
 
 	brcmf_dbg(INFO, "completed!!\n");
 
-	of_fwnames = brcmf_of_fwnames(sdiodev->dev, &of_fwcount);
-
-	if (of_fwnames)
-		fwreq = brcmf_sdio_prepare_fw_request(bus, of_fwnames,
-						      of_fwcount);
-	else
-		fwreq = brcmf_sdio_prepare_fw_request(bus, brcmf_sdio_fwnames,
-						      ARRAY_SIZE(brcmf_sdio_fwnames));
-
+	fwreq = brcmf_sdio_prepare_fw_request(bus);
 	if (!fwreq) {
 		ret = -ENOMEM;
 		goto fail;
 	}
 
 	ret = brcmf_fw_get_firmwares(sdiodev->dev, fwreq,
-				     of_fwnames ?
-				     brcmf_sdio_of_firmware_callback :
 				     brcmf_sdio_firmware_callback);
 	if (ret != 0) {
 		brcmf_err("async firmware request failed: %d\n", ret);