From: Andrew Lunn <andrew@lunn.ch>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-m32r-ja@ml.linux-m32r.org, linux-mips@linux-mips.org,
linux-efi@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-sh@vger.kernel.org, Sebastian Reichel <sre@kernel.org>,
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Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
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David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH 23/44] power/reset: qnap-poweroff: Register with kernel poweroff handler
Date: Tue, 7 Oct 2014 18:02:08 +0200 [thread overview]
Message-ID: <20141007160208.GD19005@lunn.ch> (raw)
In-Reply-To: <1412659726-29957-24-git-send-email-linux@roeck-us.net>
On Mon, Oct 06, 2014 at 10:28:25PM -0700, Guenter Roeck wrote:
> Register with kernel poweroff handler instead of setting pm_power_off
> directly. Register with default priority value of 128 to reflect that
> the original code generates an error if another poweroff handler has
> already been registered when the driver is loaded.
>
> Cc: Sebastian Reichel <sre@kernel.org>
> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
> Cc: David Woodhouse <dwmw2@infradead.org>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Thanks
Andrew
> ---
> drivers/power/reset/qnap-poweroff.c | 28 ++++++++++++++--------------
> 1 file changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/power/reset/qnap-poweroff.c b/drivers/power/reset/qnap-poweroff.c
> index a75db7f..c474980 100644
> --- a/drivers/power/reset/qnap-poweroff.c
> +++ b/drivers/power/reset/qnap-poweroff.c
> @@ -16,7 +16,9 @@
>
> #include <linux/kernel.h>
> #include <linux/module.h>
> +#include <linux/notifier.h>
> #include <linux/platform_device.h>
> +#include <linux/pm.h>
> #include <linux/serial_reg.h>
> #include <linux/kallsyms.h>
> #include <linux/of.h>
> @@ -55,7 +57,8 @@ static void __iomem *base;
> static unsigned long tclk;
> static const struct power_off_cfg *cfg;
>
> -static void qnap_power_off(void)
> +static int qnap_power_off(struct notifier_block *this, unsigned long unused1,
> + void *unused2)
> {
> const unsigned divisor = ((tclk + (8 * cfg->baud)) / (16 * cfg->baud));
>
> @@ -72,14 +75,20 @@ static void qnap_power_off(void)
>
> /* send the power-off command to PIC */
> writel(cfg->cmd, UART1_REG(TX));
> +
> + return NOTIFY_DONE;
> }
>
> +static struct notifier_block qnap_poweroff_nb = {
> + .notifier_call = qnap_power_off,
> + .priority = 128,
> +};
> +
> static int qnap_power_off_probe(struct platform_device *pdev)
> {
> struct device_node *np = pdev->dev.of_node;
> struct resource *res;
> struct clk *clk;
> - char symname[KSYM_NAME_LEN];
>
> const struct of_device_id *match =
> of_match_node(qnap_power_off_of_match_table, np);
> @@ -106,22 +115,13 @@ static int qnap_power_off_probe(struct platform_device *pdev)
>
> tclk = clk_get_rate(clk);
>
> - /* Check that nothing else has already setup a handler */
> - if (pm_power_off) {
> - lookup_symbol_name((ulong)pm_power_off, symname);
> - dev_err(&pdev->dev,
> - "pm_power_off already claimed %p %s",
> - pm_power_off, symname);
> - return -EBUSY;
> - }
> - pm_power_off = qnap_power_off;
> -
> - return 0;
> + return register_poweroff_handler(&qnap_poweroff_nb);
> }
>
> static int qnap_power_off_remove(struct platform_device *pdev)
> {
> - pm_power_off = NULL;
> + unregister_poweroff_handler(&qnap_poweroff_nb);
> +
> return 0;
> }
>
> --
> 1.9.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2014-10-07 16:02 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-07 5:28 [PATCH 00/44] kernel: Add support for poweroff handler call chain Guenter Roeck
2014-10-07 5:28 ` [PATCH 01/44] " Guenter Roeck
2014-10-07 7:46 ` Philippe Rétornaz
2014-10-09 10:31 ` Pavel Machek
2014-10-09 15:38 ` Guenter Roeck
2014-10-09 11:31 ` Geert Uytterhoeven
2014-10-09 13:25 ` Guenter Roeck
2015-06-18 1:04 ` Stephen Boyd
2015-06-18 6:53 ` Frans Klaver
2015-06-18 11:54 ` Guenter Roeck
2015-06-18 12:14 ` Frans Klaver
2015-06-18 15:30 ` Guenter Roeck
2015-06-18 21:40 ` Stephen Boyd
2014-10-07 5:28 ` [PATCH 02/44] memory: emif: Use API function to determine poweroff capability Guenter Roeck
2014-10-07 5:28 ` [PATCH 03/44] hibernate: Call have_kernel_poweroff instead of checking pm_power_off Guenter Roeck
2014-10-07 23:41 ` Rafael J. Wysocki
2014-10-09 10:32 ` Pavel Machek
2014-10-09 13:24 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 04/44] m68k: Replace mach_power_off with pm_power_off Guenter Roeck
2014-10-07 8:29 ` Geert Uytterhoeven
2014-10-07 5:28 ` [PATCH 05/44] mfd: as3722: Drop reference to pm_power_off from devicetree bindings Guenter Roeck
2014-10-07 10:59 ` Mark Rutland
2014-10-07 16:21 ` Rob Landley
2014-10-07 16:31 ` Guenter Roeck
2014-10-07 16:59 ` David Daney
2014-10-07 17:10 ` Rob Landley
2014-10-07 16:58 ` Mark Rutland
2014-10-07 5:28 ` [PATCH 06/44] gpio-poweroff: " Guenter Roeck
2014-10-07 11:03 ` Mark Rutland
2014-10-07 15:50 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 07/44] qnap-poweroff: " Guenter Roeck
2014-10-07 11:02 ` Mark Rutland
2014-10-07 15:57 ` Guenter Roeck
2014-10-07 15:51 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 08/44] kernel: Move pm_power_off to common code Guenter Roeck
2014-10-07 8:32 ` Geert Uytterhoeven
2014-10-07 13:58 ` Richard Weinberger
2014-10-07 23:42 ` Rafael J. Wysocki
2014-10-08 7:25 ` Jesper Nilsson
2014-10-08 11:06 ` 回复: " Xuetao Guan
2014-10-09 10:28 ` Catalin Marinas
2014-10-09 10:35 ` Vineet Gupta
2014-10-09 10:38 ` Pavel Machek
2014-10-09 13:14 ` Guenter Roeck
2014-10-09 20:24 ` Pavel Machek
2014-10-10 16:53 ` Guenter Roeck
2014-10-14 4:29 ` Hirokazu TAKATA
2014-10-07 5:28 ` [PATCH 09/44] mfd: palmas: Register with kernel poweroff handler Guenter Roeck
2014-10-07 5:28 ` [PATCH 10/44] mfd: axp20x: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 11/44] mfd: retu: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 12/44] mfd: ab8500-sysctrl: " Guenter Roeck
2014-10-07 8:00 ` Lee Jones
2014-10-09 10:36 ` Catalin Marinas
2014-10-09 10:49 ` Lee Jones
2014-10-09 13:26 ` Guenter Roeck
2014-10-09 13:33 ` Lee Jones
2014-10-09 15:45 ` Guenter Roeck
2014-10-09 15:54 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 13/44] mfd: max8907: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 14/44] mfd: tps80031: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 15/44] mfd: dm355evm_msp: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 16/44] mfd: tps6586x: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 17/44] mfd: tps65910: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 18/44] mfd: twl4030-power: " Guenter Roeck
2014-10-07 7:52 ` Lee Jones
2014-10-07 5:28 ` [PATCH 19/44] ipmi: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 20/44] power/reset: restart-poweroff: " Guenter Roeck
2014-10-07 16:06 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 21/44] power/reset: gpio-poweroff: " Guenter Roeck
2014-10-07 16:00 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 22/44] power/reset: as3722-poweroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 23/44] power/reset: qnap-poweroff: " Guenter Roeck
2014-10-07 16:02 ` Andrew Lunn [this message]
2014-10-07 5:28 ` [PATCH 24/44] power/reset: msm-powroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 25/44] power/reset: vexpress-poweroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 26/44] x86: iris: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 27/44] x86: apm: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 28/44] x86: olpc: Register xo1 poweroff handler " Guenter Roeck
2014-10-07 5:28 ` [PATCH 29/44] staging: nvec: Register " Guenter Roeck
2014-10-07 16:23 ` Greg Kroah-Hartman
2014-10-07 5:28 ` [PATCH 30/44] acpi: Register poweroff handler " Guenter Roeck
2014-10-07 5:28 ` [PATCH 31/44] arm: Register " Guenter Roeck
2014-10-07 8:04 ` Nicolas Ferre
2014-10-07 5:28 ` [PATCH 32/44] arm64: psci: " Guenter Roeck
2014-10-09 10:41 ` Catalin Marinas
2014-10-07 5:28 ` [PATCH 33/44] avr32: atngw100: " Guenter Roeck
2014-11-01 10:16 ` Hans-Christian Egtvedt
2014-11-01 17:02 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 34/44] ia64: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 35/44] m68k: " Guenter Roeck
2014-10-07 9:19 ` Geert Uytterhoeven
2014-10-07 5:28 ` [PATCH 36/44] mips: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 37/44] sh: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 38/44] x86: lguest: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 39/44] x86: ce4100: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 40/44] x86: intel-mid: Drop registration of dummy poweroff handlers Guenter Roeck
2014-10-07 5:28 ` [PATCH 41/44] x86: pmc_atom: Register poweroff handler with kernel poweroff handler Guenter Roeck
2014-10-07 5:28 ` [PATCH 42/44] efi: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 43/44] hwmon: (ab8500) Call kernel_power_off instead of pm_power_off Guenter Roeck
2014-10-07 5:28 ` [PATCH 44/44] kernel: Remove pm_power_off Guenter Roeck
2014-10-07 23:43 ` Rafael J. Wysocki
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