Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755459Ab1BCD4B (ORCPT ); Wed, 2 Feb 2011 22:56:01 -0500 Received: from LUNGE.MIT.EDU ([18.54.1.69]:56862 "EHLO lunge.queued.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754971Ab1BCD4A (ORCPT ); Wed, 2 Feb 2011 22:56:00 -0500 Date: Wed, 2 Feb 2011 19:55:56 -0800 From: Andres Salomon To: Samuel Ortiz Cc: linux-kernel@vger.kernel.org, Mark Brown Subject: [PATCH 01/19] mfd-core: unconditionally add mfd_cell to every platform_device Message-ID: <20110202195556.3e947297@queued.net> In-Reply-To: <20110202195417.228e2656@queued.net> References: <20110202195417.228e2656@queued.net> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.20.1; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2341 Lines: 72 Previously, one would set the mfd_cell's platform_data/data_size to point to the current mfd_cell in order to pass that information along to drivers. This causes the current mfd_cell to always be available to drivers. It also adds a wrapper function for fetching the mfd cell from a platform device. Signed-off-by: Andres Salomon --- drivers/mfd/mfd-core.c | 9 +++------ include/linux/mfd/core.h | 12 ++++++++++-- 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index d83ad0f..d8b9e35 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -39,12 +39,9 @@ static int mfd_add_device(struct device *parent, int id, pdev->dev.parent = parent; platform_set_drvdata(pdev, cell->driver_data); - if (cell->data_size) { - ret = platform_device_add_data(pdev, - cell->platform_data, cell->data_size); - if (ret) - goto fail_res; - } + ret = platform_device_add_data(pdev, cell, sizeof(struct mfd_cell)); + if (ret) + goto fail_res; for (r = 0; r < cell->num_resources; r++) { res[r].name = cell->resources[r].name; diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 835996e..82b2a5c 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -33,8 +33,7 @@ struct mfd_cell { /* driver-specific data for MFD-aware "cell" drivers */ void *driver_data; - /* platform_data can be used to either pass data to "generic" - driver or as a hook to mfd_cell for the "cell" drivers */ + /* These two are unused */ void *platform_data; size_t data_size; @@ -55,6 +54,15 @@ struct mfd_cell { bool pm_runtime_no_callbacks; }; +/* + * Given a platform device that's been created by mfd_add_devices(), fetch + * the mfd_cell that created it. + */ +static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev) +{ + return pdev->dev.platform_data; +} + extern int mfd_add_devices(struct device *parent, int id, const struct mfd_cell *cells, int n_devs, struct resource *mem_base, -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/