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d=bootlin.com; s=gm1; t=1709120859; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3MXNsYf4aMbx/yz5fFqHi9DQsFD4zYWoE+WdbvkPVrE=; b=mRqx88XegkxLGBxCS0XXZrA73LF1qNcwWzpZHAYiPfL/KwqrhA+id2Kv4xsHqyLmjMdFsO 4imQvWVt5lePLZD/QfyJ3u4adtMUKfTyDBKe0+Ds8wCjzY5VUom01x4asXY6XEbsMAn8bx hyNE8qCw8qRug5cTpJKkJJCLabx9KOVDDqOcBSddoJ7nZKDoSM8DxxbpVPyckBRAiU8Pzo TsfOCQeQ8BpXfjsk0jqFOWoPosifv+pw1EFzVEFofWDbUiuPdK7d8h7sALR17xesPRuZiY XISEwkW4hUbE63nVfaSk+wh3gH7kS8sCuCcrfn23sw4f6nQfVByK6SAgKF6m+g== From: Maxime Chevallier To: davem@davemloft.net Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Russell King , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Herve Codina , Florian Fainelli , Heiner Kallweit , Vladimir Oltean , =?utf-8?q?K=C3=B6ry_Maincent?= , Jesse Brandeburg , Jonathan Corbet , =?utf-8?q?Marek_Beh=C3=BAn?= , Piergiorgio Beruto , Oleksij Rempel , =?utf-8?q?Nicol=C3=B2_Veronese?= , Simon Horman , mwojtas@chromium.org Subject: [PATCH net-next v9 04/13] net: sfp: Add helper to return the SFP bus name Date: Wed, 28 Feb 2024 12:47:18 +0100 Message-ID: <20240228114728.51861-5-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240228114728.51861-1-maxime.chevallier@bootlin.com> References: <20240228114728.51861-1-maxime.chevallier@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: maxime.chevallier@bootlin.com X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792144537213857292 X-GMAIL-MSGID: 1792144537213857292 Knowing the bus name is helpful when we want to expose the link topology to userspace, add a helper to return the SFP bus name. Signed-off-by: Maxime Chevallier Reviewed-by: Andrew Lunn --- V9: - No changes V8: - No changes V7: - No changes V6: - No changes V5: - Added Andrew's R-b V4: - No changes V3: - Added RTNL assert drivers/net/phy/sfp-bus.c | 11 +++++++++++ include/linux/sfp.h | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c index e05013aeecc3..413021619afe 100644 --- a/drivers/net/phy/sfp-bus.c +++ b/drivers/net/phy/sfp-bus.c @@ -859,3 +859,14 @@ void sfp_unregister_socket(struct sfp_bus *bus) sfp_bus_put(bus); } EXPORT_SYMBOL_GPL(sfp_unregister_socket); + +const char *sfp_get_name(struct sfp_bus *bus) +{ + ASSERT_RTNL(); + + if (bus->sfp_dev) + return dev_name(bus->sfp_dev); + + return NULL; +} +EXPORT_SYMBOL_GPL(sfp_get_name); diff --git a/include/linux/sfp.h b/include/linux/sfp.h index 0573e53b0c11..55c0ab17c9e2 100644 --- a/include/linux/sfp.h +++ b/include/linux/sfp.h @@ -570,6 +570,7 @@ struct sfp_bus *sfp_bus_find_fwnode(const struct fwnode_handle *fwnode); int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, const struct sfp_upstream_ops *ops); void sfp_bus_del_upstream(struct sfp_bus *bus); +const char *sfp_get_name(struct sfp_bus *bus); #else static inline int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id, @@ -648,6 +649,11 @@ static inline int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, static inline void sfp_bus_del_upstream(struct sfp_bus *bus) { } + +static inline const char *sfp_get_name(struct sfp_bus *bus) +{ + return NULL; +} #endif #endif