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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Dawei Li <set_pte_at@outlook.com>,
	Damien Le Moal <damien.lemoal@opensource.wdc.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: kernel@pengutronix.de, linux-kbuild@vger.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
	Nicholas Piggin <npiggin@gmail.com>,
	linux-serial@vger.kernel.org,
	"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] serial: pmac_zilog: Drop usage of platform_driver_probe()
Date: Fri, 29 Mar 2024 22:54:43 +0100	[thread overview]
Message-ID: <5ea3174616abc9fa256f115b4fb175d289ac1754.1711748999.git.u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <2e3783106bf6bd9a7bdeb12b706378fb16316471.1711748999.git.u.kleine-koenig@pengutronix.de>

There are considerations to drop platform_driver_probe() as a concept
that isn't relevant any more today. It comes with an added complexity
that makes many users hold it wrong. (E.g. this driver should have
marked the driver struct with __refdata to prevent the below mentioned
false positive section mismatch warning.)

This fixes a W=1 build warning:

	WARNING: modpost: drivers/tty/serial/pmac_zilog: section mismatch in reference: pmz_driver+0x8 (section: .data) -> pmz_detach (section: .exit.text)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/tty/serial/pmac_zilog.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 05d97e89511e..e44621218248 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -1695,7 +1695,7 @@ static void pmz_dispose_port(struct uart_pmac_port *uap)
 	memset(uap, 0, sizeof(struct uart_pmac_port));
 }
 
-static int __init pmz_attach(struct platform_device *pdev)
+static int pmz_attach(struct platform_device *pdev)
 {
 	struct uart_pmac_port *uap;
 	int i;
@@ -1714,7 +1714,7 @@ static int __init pmz_attach(struct platform_device *pdev)
 	return uart_add_one_port(&pmz_uart_reg, &uap->port);
 }
 
-static void __exit pmz_detach(struct platform_device *pdev)
+static void pmz_detach(struct platform_device *pdev)
 {
 	struct uart_pmac_port *uap = platform_get_drvdata(pdev);
 
@@ -1789,7 +1789,8 @@ static struct macio_driver pmz_driver = {
 #else
 
 static struct platform_driver pmz_driver = {
-	.remove_new	= __exit_p(pmz_detach),
+	.probe		= pmz_attach,
+	.remove_new	= pmz_detach,
 	.driver		= {
 		.name		= "scc",
 	},
@@ -1837,7 +1838,7 @@ static int __init init_pmz(void)
 #ifdef CONFIG_PPC_PMAC
 	return macio_register_driver(&pmz_driver);
 #else
-	return platform_driver_probe(&pmz_driver, pmz_attach);
+	return platform_driver_register(&pmz_driver);
 #endif
 }
 
base-commit: a6bd6c9333397f5a0e2667d4d82fef8c970108f2
-- 
2.43.0


       reply	other threads:[~2024-03-29 21:55 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <2e3783106bf6bd9a7bdeb12b706378fb16316471.1711748999.git.u.kleine-koenig@pengutronix.de>
2024-03-29 21:54 ` Uwe Kleine-König [this message]
2024-04-03  5:15   ` [PATCH] serial: pmac_zilog: Drop usage of platform_driver_probe() Michael Ellerman

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