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Wysocki" , Len Brown , Hans de Goede , Mark Gross , Jaroslav Kysela , Takashi Iwai Subject: [PATCH v4 1/9] spi: Make spi_alloc_device and spi_add_device public again Date: Thu, 20 Jan 2022 13:43:18 +0000 Message-ID: <20220120134326.5295-2-sbinding@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220120134326.5295-1-sbinding@opensource.cirrus.com> References: <20220120134326.5295-1-sbinding@opensource.cirrus.com> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: ZxX4mGlUFgapqRSefMN9M18XOKK_1bFo X-Proofpoint-GUID: ZxX4mGlUFgapqRSefMN9M18XOKK_1bFo X-Proofpoint-Spam-Reason: safe Cc: alsa-devel@alsa-project.org, patches@opensource.cirrus.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org, Stefan Binding , linux-spi@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" This functions were previously made private since they were not used. However, these functions will be needed again. Partial revert of commit da21fde0fdb3 ("spi: Make several public functions private to spi.c") Signed-off-by: Stefan Binding Reviewed-by: Hans de Goede --- drivers/spi/spi.c | 6 ++++-- include/linux/spi/spi.h | 12 ++++++++++++ 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 4599b121d744..1eb84101c4ad 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -532,7 +532,7 @@ static DEFINE_MUTEX(board_lock); * * Return: a pointer to the new device, or NULL. */ -static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) +struct spi_device *spi_alloc_device(struct spi_controller *ctlr) { struct spi_device *spi; @@ -557,6 +557,7 @@ static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) device_initialize(&spi->dev); return spi; } +EXPORT_SYMBOL_GPL(spi_alloc_device); static void spi_dev_set_name(struct spi_device *spi) { @@ -652,7 +653,7 @@ static int __spi_add_device(struct spi_device *spi) * * Return: 0 on success; negative errno on failure */ -static int spi_add_device(struct spi_device *spi) +int spi_add_device(struct spi_device *spi) { struct spi_controller *ctlr = spi->controller; struct device *dev = ctlr->dev.parent; @@ -673,6 +674,7 @@ static int spi_add_device(struct spi_device *spi) mutex_unlock(&ctlr->add_lock); return status; } +EXPORT_SYMBOL_GPL(spi_add_device); static int spi_add_device_locked(struct spi_device *spi) { diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 7ab3fed7b804..0346a3ff27fd 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -1452,7 +1452,19 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) * use spi_new_device() to describe each device. You can also call * spi_unregister_device() to start making that device vanish, but * normally that would be handled by spi_unregister_controller(). + * + * You can also use spi_alloc_device() and spi_add_device() to use a two + * stage registration sequence for each spi_device. This gives the caller + * some more control over the spi_device structure before it is registered, + * but requires that caller to initialize fields that would otherwise + * be defined using the board info. */ +extern struct spi_device * +spi_alloc_device(struct spi_controller *ctlr); + +extern int +spi_add_device(struct spi_device *spi); + extern struct spi_device * spi_new_device(struct spi_controller *, struct spi_board_info *);