From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752960AbcF1KeY (ORCPT ); Tue, 28 Jun 2016 06:34:24 -0400 Received: from mail-wm0-f42.google.com ([74.125.82.42]:36903 "EHLO mail-wm0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752938AbcF1KeT (ORCPT ); Tue, 28 Jun 2016 06:34:19 -0400 From: Daniel Lezcano To: daniel.lezcano@linaro.org, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, Liviu Dudau , linux-arm-kernel@lists.infradead.org Subject: [PATCH 61/92] clocksource/drivers/versatile: Convert init function to return error Date: Tue, 28 Jun 2016 12:31:20 +0200 Message-Id: <1467109911-11060-61-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467109911-11060-1-git-send-email-daniel.lezcano@linaro.org> References: <577251A4.7030508@linaro.org> <1467109911-11060-1-git-send-email-daniel.lezcano@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano Acked-by: Liviu Dudau --- drivers/clocksource/versatile.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/versatile.c b/drivers/clocksource/versatile.c index 0a26d3d..8daeffa 100644 --- a/drivers/clocksource/versatile.c +++ b/drivers/clocksource/versatile.c @@ -25,18 +25,20 @@ static u64 notrace versatile_sys_24mhz_read(void) return readl(versatile_sys_24mhz); } -static void __init versatile_sched_clock_init(struct device_node *node) +static int __init versatile_sched_clock_init(struct device_node *node) { void __iomem *base = of_iomap(node, 0); if (!base) - return; + return -ENXIO; versatile_sys_24mhz = base + SYS_24MHZ; sched_clock_register(versatile_sys_24mhz_read, 32, 24000000); + + return 0; } -CLOCKSOURCE_OF_DECLARE(vexpress, "arm,vexpress-sysreg", +CLOCKSOURCE_OF_DECLARE_RET(vexpress, "arm,vexpress-sysreg", versatile_sched_clock_init); -CLOCKSOURCE_OF_DECLARE(versatile, "arm,versatile-sysreg", +CLOCKSOURCE_OF_DECLARE_RET(versatile, "arm,versatile-sysreg", versatile_sched_clock_init); -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: daniel.lezcano@linaro.org (Daniel Lezcano) Date: Tue, 28 Jun 2016 12:31:20 +0200 Subject: [PATCH 61/92] clocksource/drivers/versatile: Convert init function to return error In-Reply-To: <1467109911-11060-1-git-send-email-daniel.lezcano@linaro.org> References: <577251A4.7030508@linaro.org> <1467109911-11060-1-git-send-email-daniel.lezcano@linaro.org> Message-ID: <1467109911-11060-61-git-send-email-daniel.lezcano@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano Acked-by: Liviu Dudau --- drivers/clocksource/versatile.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/versatile.c b/drivers/clocksource/versatile.c index 0a26d3d..8daeffa 100644 --- a/drivers/clocksource/versatile.c +++ b/drivers/clocksource/versatile.c @@ -25,18 +25,20 @@ static u64 notrace versatile_sys_24mhz_read(void) return readl(versatile_sys_24mhz); } -static void __init versatile_sched_clock_init(struct device_node *node) +static int __init versatile_sched_clock_init(struct device_node *node) { void __iomem *base = of_iomap(node, 0); if (!base) - return; + return -ENXIO; versatile_sys_24mhz = base + SYS_24MHZ; sched_clock_register(versatile_sys_24mhz_read, 32, 24000000); + + return 0; } -CLOCKSOURCE_OF_DECLARE(vexpress, "arm,vexpress-sysreg", +CLOCKSOURCE_OF_DECLARE_RET(vexpress, "arm,vexpress-sysreg", versatile_sched_clock_init); -CLOCKSOURCE_OF_DECLARE(versatile, "arm,versatile-sysreg", +CLOCKSOURCE_OF_DECLARE_RET(versatile, "arm,versatile-sysreg", versatile_sched_clock_init); -- 1.9.1