From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: [PATCH v3 5/6] usb: chipidea: allow multiple instances to use default ci_default_pdata Date: Fri, 29 May 2015 11:38:45 -0500 Message-ID: <1432917526-9688-6-git-send-email-robh@kernel.org> References: <1432917526-9688-1-git-send-email-robh@kernel.org> Return-path: In-Reply-To: <1432917526-9688-1-git-send-email-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Greg Kroah-Hartman , Peter Chen , Kishon Vijay Abraham I Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Rob Herring , Peter Chen List-Id: devicetree@vger.kernel.org Currently, ci_default_pdata is common to all instances of the driver and gets modified by the core driver code. This is bad if there are multiple instances of the device with different settings such as the phy type. Fix this by making a copy of the default platform_data. Signed-off-by: Rob Herring Cc: Peter Chen Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org --- drivers/usb/chipidea/ci_hdrc_usb2.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c index 45844c9..9eae1a1 100644 --- a/drivers/usb/chipidea/ci_hdrc_usb2.c +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c @@ -25,7 +25,7 @@ struct ci_hdrc_usb2_priv { struct clk *clk; }; -static struct ci_hdrc_platform_data ci_default_pdata = { +static const struct ci_hdrc_platform_data ci_default_pdata = { .capoffset = DEF_CAPOFFSET, .flags = CI_HDRC_DISABLE_STREAMING, }; @@ -37,8 +37,10 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev) struct ci_hdrc_platform_data *ci_pdata = dev_get_platdata(dev); int ret; - if (!ci_pdata) - ci_pdata = &ci_default_pdata; + if (!ci_pdata) { + ci_pdata = devm_kmalloc(dev, sizeof(*ci_pdata), GFP_KERNEL); + *ci_pdata = ci_default_pdata; /* struct copy */ + } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) -- 2.1.0