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From: "Rafał Miłecki" <zajec5@gmail.com>
To: Kalle Valo <kvalo@codeaurora.org>
Cc: "Arend van Spriel" <arend.vanspriel@broadcom.com>,
	"Franky Lin" <franky.lin@broadcom.com>,
	"Hante Meuleman" <hante.meuleman@broadcom.com>,
	"Chi-Hsien Lin" <chi-hsien.lin@cypress.com>,
	"Wright Feng" <wright.feng@cypress.com>,
	"Winnie Chang" <winnie.chang@cypress.com>,
	linux-wireless@vger.kernel.org,
	brcm80211-dev-list.pdl@broadcom.com,
	brcm80211-dev-list@cypress.com,
	"Rafał Miłecki" <rafal@milecki.pl>
Subject: [PATCH 1/3] brcmfmac: move "cfg80211_ops" pointer to another struct
Date: Tue,  3 Sep 2019 06:29:26 +0200	[thread overview]
Message-ID: <20190903042928.18621-2-zajec5@gmail.com> (raw)
In-Reply-To: <20190903042928.18621-1-zajec5@gmail.com>

From: Rafał Miłecki <rafal@milecki.pl>

This moves "ops" pointer from "struct brcmf_cfg80211_info" to the
"struct brcmf_pub". This movement makes it possible to allocate wiphy
without attaching cfg80211 (brcmf_cfg80211_attach()). It's required for
later separation of wiphy allocation and driver initialization.

While at it fix also an unlikely memory leak in the brcmf_attach().

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 .../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c  | 1 -
 .../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h  | 1 -
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c  | 9 ++++++---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h  | 1 +
 4 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 581d0013f33e..c476f854f3ae 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -7210,7 +7210,6 @@ void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg)
 	brcmf_pno_detach(cfg);
 	brcmf_btcoex_detach(cfg);
 	wiphy_unregister(cfg->wiphy);
-	kfree(cfg->ops);
 	wl_deinit_priv(cfg);
 	brcmf_free_wiphy(cfg->wiphy);
 	kfree(cfg);
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h
index b7b50b07f776..14d5bbad1db1 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h
@@ -292,7 +292,6 @@ struct brcmf_cfg80211_wowl {
  */
 struct brcmf_cfg80211_info {
 	struct wiphy *wiphy;
-	struct cfg80211_ops *ops;
 	struct brcmf_cfg80211_conf *conf;
 	struct brcmf_p2p_info p2p;
 	struct brcmf_btcoex_info *btcoex;
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
index 21e07d1ceeae..e8c488376ff9 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1224,12 +1224,15 @@ int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
 		return -ENOMEM;
 
 	wiphy = wiphy_new(ops, sizeof(*drvr));
-	if (!wiphy)
+	if (!wiphy) {
+		kfree(ops);
 		return -ENOMEM;
+	}
 
 	set_wiphy_dev(wiphy, dev);
 	drvr = wiphy_priv(wiphy);
 	drvr->wiphy = wiphy;
+	drvr->ops = ops;
 
 	for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
 		drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
@@ -1262,12 +1265,10 @@ int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
 		goto fail;
 	}
 
-	drvr->config->ops = ops;
 	return 0;
 
 fail:
 	brcmf_detach(dev);
-	kfree(ops);
 
 	return ret;
 }
@@ -1353,6 +1354,8 @@ void brcmf_detach(struct device *dev)
 
 	bus_if->drvr = NULL;
 
+	kfree(drvr->ops);
+
 	wiphy_free(drvr->wiphy);
 }
 
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
index 86517a3d74b1..6699637d3bf8 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
@@ -97,6 +97,7 @@ struct brcmf_pub {
 	struct brcmf_bus *bus_if;
 	struct brcmf_proto *proto;
 	struct wiphy *wiphy;
+	struct cfg80211_ops *ops;
 	struct brcmf_cfg80211_info *config;
 
 	/* Internal brcmf items */
-- 
2.21.0


  reply	other threads:[~2019-09-03  4:29 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-03  4:29 [PATCH 0/3] brcmfmac: keep wiphy during PCIe driver lifetime Rafał Miłecki
2019-09-03  4:29 ` Rafał Miłecki [this message]
2019-09-03 18:59   ` [PATCH 1/3] brcmfmac: move "cfg80211_ops" pointer to another struct Arend Van Spriel
2019-09-09 13:15     ` Rafał Miłecki
2019-09-13 13:42   ` Kalle Valo
2019-09-03  4:29 ` [PATCH 2/3] brcmfmac: split brcmf_attach() and brcmf_detach() functions Rafał Miłecki
2019-09-03 19:03   ` Arend Van Spriel
2019-09-03  4:29 ` [PATCH 3/3] brcmfmac: don't realloc wiphy during PCIe reset Rafał Miłecki
2019-09-03 19:04   ` Arend Van Spriel
2019-09-03 18:51 ` [PATCH 0/3] brcmfmac: keep wiphy during PCIe driver lifetime Arend Van Spriel
2019-09-09 13:06   ` Rafał Miłecki

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