[{"id":3684585,"web_url":"http://patchwork.ozlabs.org/comment/3684585/","msgid":"","list_archive_url":null,"date":"2026-04-30T09:57:01","subject":"Re: [PATCH v4 1/2] ACPI: provide acpi_bus_find_device_by_name()","submitter":{"id":64267,"url":"http://patchwork.ozlabs.org/api/people/64267/","name":"Rafael J. Wysocki","email":"rafael@kernel.org"},"content":"On Thu, Apr 30, 2026 at 9:34 AM Bartosz Golaszewski\n wrote:\n>\n> Provide a helper allowing to locate an ACPI device by its name.\n>\n> Signed-off-by: Bartosz Golaszewski \n\nAcked-by: Rafael J. Wysocki (Intel) \n\n> ---\n> drivers/acpi/bus.c | 13 +++++++++++++\n> include/linux/acpi.h | 7 +++++++\n> 2 files changed, 20 insertions(+)\n>\n> diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c\n> index 2ec095e2009e40b0645f654fb051429e5679dc7c..5dd8459be03db4165bcb59943b94ea7db273ad7b 100644\n> --- a/drivers/acpi/bus.c\n> +++ b/drivers/acpi/bus.c\n> @@ -1181,6 +1181,19 @@ int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data)\n> }\n> EXPORT_SYMBOL_GPL(acpi_bus_for_each_dev);\n>\n> +/**\n> + * acpi_bus_find_device_by_name() - Locate an ACPI device by its name\n> + * @name: Name of the device to match\n> + *\n> + * Returns:\n> + * New reference to the matched device or NULL if the device can't be found.\n> + */\n> +struct device *acpi_bus_find_device_by_name(const char *name)\n> +{\n> + return bus_find_device_by_name(&acpi_bus_type, NULL, name);\n> +}\n> +EXPORT_SYMBOL_GPL(acpi_bus_find_device_by_name);\n> +\n> struct acpi_dev_walk_context {\n> int (*fn)(struct acpi_device *, void *);\n> void *data;\n> diff --git a/include/linux/acpi.h b/include/linux/acpi.h\n> index 67effb91fa98373d7bf19be5ae3d8baa9328d6e1..10d6c6c11bdffcad14100601e104520366dfc30b 100644\n> --- a/include/linux/acpi.h\n> +++ b/include/linux/acpi.h\n> @@ -798,6 +798,8 @@ int acpi_get_local_u64_address(acpi_handle handle, u64 *addr);\n> int acpi_get_local_address(acpi_handle handle, u32 *addr);\n> const char *acpi_get_subsystem_id(acpi_handle handle);\n>\n> +struct device *acpi_bus_find_device_by_name(const char *name);\n> +\n> #ifdef CONFIG_ACPI_MRRM\n> int acpi_mrrm_max_mem_region(void);\n> #endif\n> @@ -1106,6 +1108,11 @@ static inline const char *acpi_get_subsystem_id(acpi_handle handle)\n> return ERR_PTR(-ENODEV);\n> }\n>\n> +static inline struct device *acpi_bus_find_device_by_name(const char *name)\n> +{\n> + return NULL;\n> +}\n> +\n> static inline int acpi_register_wakeup_handler(int wake_irq,\n> bool (*wakeup)(void *context), void *context)\n> {\n>\n> --\n> 2.47.3\n>","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=cU9Ff4nm;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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Wysocki\" ","Date":"Thu, 30 Apr 2026 11:57:01 +0200","X-Gmail-Original-Message-ID":"\n ","X-Gm-Features":"AVHnY4LLRxYWhknbQDaqqATspis7Xhq8JMKrXRvQlheeSpBHn0eRZucKuI2NAL8","Message-ID":"\n ","Subject":"Re: [PATCH v4 1/2] ACPI: provide acpi_bus_find_device_by_name()","To":"Bartosz Golaszewski ","Cc":"Andy Shevchenko ,\n Daniel Scally ,\n Heikki Krogerus ,\n Sakari Ailus ,\n Greg Kroah-Hartman ,\n \"Rafael J. Wysocki\" , Danilo Krummrich ,\n Mika Westerberg ,\n Andy Shevchenko , Linus Walleij ,\n Hans de Goede ,\n =?utf-8?q?Ilpo_J=C3=A4rvinen?= ,\n Dmitry Torokhov , Len Brown ,\n linux-acpi@vger.kernel.org, driver-core@lists.linux.dev,\n linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,\n platform-driver-x86@vger.kernel.org, brgl@kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3684675,"web_url":"http://patchwork.ozlabs.org/comment/3684675/","msgid":"","list_archive_url":null,"date":"2026-04-30T12:45:41","subject":"Re: [PATCH v4 1/2] ACPI: provide acpi_bus_find_device_by_name()","submitter":{"id":8583,"url":"http://patchwork.ozlabs.org/api/people/8583/","name":"Andy Shevchenko","email":"andriy.shevchenko@linux.intel.com"},"content":"On Thu, Apr 30, 2026 at 09:34:05AM +0200, Bartosz Golaszewski wrote:\n> Provide a helper allowing to locate an ACPI device by its name.\n\n...\n\n> +/**\n> + * acpi_bus_find_device_by_name() - Locate an ACPI device by its name\n> + * @name: Name of the device to match\n\n *\n * Caller is responsible to put_device() on the returned object\n * when it is no more needed.\n\nOr use whatever wording that is already present nearby and around similar\ncases there.\n\n> + *\n> + * Returns:\n> + * New reference to the matched device or NULL if the device can't be found.\n> + */","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=OZ55+oCU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=\"78690618\"","E=Sophos;i=\"6.23,208,1770624000\";\n d=\"scan'208\";a=\"78690618\"","E=Sophos;i=\"6.23,208,1770624000\";\n d=\"scan'208\";a=\"233542862\""],"X-ExtLoop1":"1","Date":"Thu, 30 Apr 2026 15:45:41 +0300","From":"Andy Shevchenko ","To":"Bartosz Golaszewski ","Cc":"Daniel Scally ,\n Heikki Krogerus ,\n Sakari Ailus ,\n Greg Kroah-Hartman ,\n \"Rafael J. Wysocki\" , Danilo Krummrich ,\n Mika Westerberg ,\n Andy Shevchenko , Linus Walleij ,\n Hans de Goede ,\n Ilpo =?iso-8859-1?q?J=E4rvinen?= ,\n Dmitry Torokhov , Len Brown ,\n linux-acpi@vger.kernel.org, driver-core@lists.linux.dev,\n linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,\n platform-driver-x86@vger.kernel.org, brgl@kernel.org","Subject":"Re: [PATCH v4 1/2] ACPI: provide acpi_bus_find_device_by_name()","Message-ID":"","References":"<20260430-baytrail-real-swnode-v4-0-767bcda6667f@oss.qualcomm.com>\n <20260430-baytrail-real-swnode-v4-1-767bcda6667f@oss.qualcomm.com>","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Type":"text/plain; charset=us-ascii","Content-Disposition":"inline","In-Reply-To":"\n <20260430-baytrail-real-swnode-v4-1-767bcda6667f@oss.qualcomm.com>","Organization":"Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6\n krs, Bertel Jungin Aukio 5, 02600 Espoo"}}]