From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: [PATCH v5 18/23] usb: chipidea: msm: Make platform data driver local instead of global Date: Mon, 17 Oct 2016 18:56:31 -0700 Message-ID: <20161018015636.11701-19-stephen.boyd@linaro.org> References: <20161018015636.11701-1-stephen.boyd@linaro.org> Return-path: Received: from mail-pa0-f47.google.com ([209.85.220.47]:34577 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936463AbcJRB47 (ORCPT ); Mon, 17 Oct 2016 21:56:59 -0400 Received: by mail-pa0-f47.google.com with SMTP id rz1so66783708pab.1 for ; Mon, 17 Oct 2016 18:56:59 -0700 (PDT) In-Reply-To: <20161018015636.11701-1-stephen.boyd@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: linux-usb@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Andy Gross , Bjorn Andersson , Neil Armstrong , Arnd Bergmann , Felipe Balbi , Peter Chen , Greg Kroah-Hartman If two devices are probed with this same driver, they'll share the same platform data structure, while the chipidea core layer writes and modifies it. This can lead to interesting results especially if one device is an OTG type chipidea controller and another is a host. Let's create a copy of this structure per each device instance so that odd things don't happen. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd --- drivers/usb/chipidea/ci_hdrc_msm.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c index 333817291798..2489a63d3e75 100644 --- a/drivers/usb/chipidea/ci_hdrc_msm.c +++ b/drivers/usb/chipidea/ci_hdrc_msm.c @@ -39,6 +39,7 @@ struct ci_hdrc_msm { struct clk *core_clk; struct clk *iface_clk; struct clk *fs_clk; + struct ci_hdrc_platform_data pdata; bool secondary_phy; bool hsic; void __iomem *base; @@ -94,16 +95,6 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) } } -static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = { - .name = "ci_hdrc_msm", - .capoffset = DEF_CAPOFFSET, - .flags = CI_HDRC_REGS_SHARED | - CI_HDRC_DISABLE_STREAMING | - CI_HDRC_OVERRIDE_AHB_BURST, - - .notify_event = ci_hdrc_msm_notify_event, -}; - static int ci_hdrc_msm_mux_phy(struct ci_hdrc_msm *ci, struct platform_device *pdev) { @@ -164,7 +155,12 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) if (IS_ERR(phy)) return PTR_ERR(phy); - ci_hdrc_msm_platdata.usb_phy = phy; + ci->pdata.name = "ci_hdrc_msm"; + ci->pdata.capoffset = DEF_CAPOFFSET; + ci->pdata.flags = CI_HDRC_REGS_SHARED | CI_HDRC_DISABLE_STREAMING | + CI_HDRC_OVERRIDE_AHB_BURST; + ci->pdata.notify_event = ci_hdrc_msm_notify_event; + ci->pdata.usb_phy = phy; reset = devm_reset_control_get(&pdev->dev, "core"); if (IS_ERR(reset)) @@ -220,9 +216,8 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) } of_node_put(ulpi_node); - plat_ci = ci_hdrc_add_device(&pdev->dev, - pdev->resource, pdev->num_resources, - &ci_hdrc_msm_platdata); + plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource, + pdev->num_resources, &ci->pdata); if (IS_ERR(plat_ci)) { dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); ret = PTR_ERR(plat_ci); -- 2.10.0.297.gf6727b0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: stephen.boyd@linaro.org (Stephen Boyd) Date: Mon, 17 Oct 2016 18:56:31 -0700 Subject: [PATCH v5 18/23] usb: chipidea: msm: Make platform data driver local instead of global In-Reply-To: <20161018015636.11701-1-stephen.boyd@linaro.org> References: <20161018015636.11701-1-stephen.boyd@linaro.org> Message-ID: <20161018015636.11701-19-stephen.boyd@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org If two devices are probed with this same driver, they'll share the same platform data structure, while the chipidea core layer writes and modifies it. This can lead to interesting results especially if one device is an OTG type chipidea controller and another is a host. Let's create a copy of this structure per each device instance so that odd things don't happen. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd --- drivers/usb/chipidea/ci_hdrc_msm.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c index 333817291798..2489a63d3e75 100644 --- a/drivers/usb/chipidea/ci_hdrc_msm.c +++ b/drivers/usb/chipidea/ci_hdrc_msm.c @@ -39,6 +39,7 @@ struct ci_hdrc_msm { struct clk *core_clk; struct clk *iface_clk; struct clk *fs_clk; + struct ci_hdrc_platform_data pdata; bool secondary_phy; bool hsic; void __iomem *base; @@ -94,16 +95,6 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) } } -static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = { - .name = "ci_hdrc_msm", - .capoffset = DEF_CAPOFFSET, - .flags = CI_HDRC_REGS_SHARED | - CI_HDRC_DISABLE_STREAMING | - CI_HDRC_OVERRIDE_AHB_BURST, - - .notify_event = ci_hdrc_msm_notify_event, -}; - static int ci_hdrc_msm_mux_phy(struct ci_hdrc_msm *ci, struct platform_device *pdev) { @@ -164,7 +155,12 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) if (IS_ERR(phy)) return PTR_ERR(phy); - ci_hdrc_msm_platdata.usb_phy = phy; + ci->pdata.name = "ci_hdrc_msm"; + ci->pdata.capoffset = DEF_CAPOFFSET; + ci->pdata.flags = CI_HDRC_REGS_SHARED | CI_HDRC_DISABLE_STREAMING | + CI_HDRC_OVERRIDE_AHB_BURST; + ci->pdata.notify_event = ci_hdrc_msm_notify_event; + ci->pdata.usb_phy = phy; reset = devm_reset_control_get(&pdev->dev, "core"); if (IS_ERR(reset)) @@ -220,9 +216,8 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev) } of_node_put(ulpi_node); - plat_ci = ci_hdrc_add_device(&pdev->dev, - pdev->resource, pdev->num_resources, - &ci_hdrc_msm_platdata); + plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource, + pdev->num_resources, &ci->pdata); if (IS_ERR(plat_ci)) { dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); ret = PTR_ERR(plat_ci); -- 2.10.0.297.gf6727b0