From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753006Ab3ABPBb (ORCPT ); Wed, 2 Jan 2013 10:01:31 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:56790 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752889Ab3ABPBQ (ORCPT ); Wed, 2 Jan 2013 10:01:16 -0500 From: Roger Quadros To: , , CC: , , , , , , , Subject: [PATCH v5 07/22] mfd: omap-usb-tll: Fix error message Date: Wed, 2 Jan 2013 17:00:27 +0200 Message-ID: <1357138842-28964-8-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1357138842-28964-1-git-send-email-rogerq@ti.com> References: <1357138842-28964-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org omap_enable/disable_tll() can fail if TLL device is not initialized. It could be due to multiple reasons and not only due to missing platform data. Also make local variables static and use 'struct device *' instead of 'struct platform_device *' for global reference. Signed-off-by: Roger Quadros --- drivers/mfd/omap-usb-tll.c | 21 ++++++++++++--------- 1 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c index f319ac9..5f61352 100644 --- a/drivers/mfd/omap-usb-tll.c +++ b/drivers/mfd/omap-usb-tll.c @@ -109,8 +109,8 @@ struct usbtll_omap { /*-------------------------------------------------------------------------*/ -const char usbtll_driver_name[] = USBTLL_DRIVER_NAME; -struct platform_device *tll_pdev; +static const char usbtll_driver_name[] = USBTLL_DRIVER_NAME; +static struct device *tll_dev; /*-------------------------------------------------------------------------*/ @@ -334,7 +334,8 @@ static int usbtll_omap_probe(struct platform_device *pdev) spin_unlock_irqrestore(&tll->lock, flags); pm_runtime_put_sync(dev); - tll_pdev = pdev; + /* only after this can omap_tll_enable/disable work */ + tll_dev = dev; return 0; @@ -356,6 +357,8 @@ static int usbtll_omap_remove(struct platform_device *pdev) struct usbtll_omap *tll = platform_get_drvdata(pdev); int i; + tll_dev = NULL; + for (i = 0; i < tll->nch; i++) clk_put(tll->ch_clk[i]); @@ -435,21 +438,21 @@ static struct platform_driver usbtll_omap_driver = { int omap_tll_enable(void) { - if (!tll_pdev) { - pr_err("missing omap usbhs tll platform_data\n"); + if (!tll_dev) { + pr_err("%s: OMAP USB TLL not initialized\n", __func__); return -ENODEV; } - return pm_runtime_get_sync(&tll_pdev->dev); + return pm_runtime_get_sync(tll_dev); } EXPORT_SYMBOL_GPL(omap_tll_enable); int omap_tll_disable(void) { - if (!tll_pdev) { - pr_err("missing omap usbhs tll platform_data\n"); + if (!tll_dev) { + pr_err("%s: OMAP USB TLL not initialized\n", __func__); return -ENODEV; } - return pm_runtime_put_sync(&tll_pdev->dev); + return pm_runtime_put_sync(tll_dev); } EXPORT_SYMBOL_GPL(omap_tll_disable); -- 1.7.4.1