From mboxrd@z Thu Jan 1 00:00:00 1970 From: s-anna@ti.com (Suman Anna) Date: Thu, 13 Feb 2014 12:15:38 -0600 Subject: [PATCHv2 07/16] iommu/omap: allow enable/disable even without pdata In-Reply-To: <1392315347-32967-1-git-send-email-s-anna@ti.com> References: <1392315347-32967-1-git-send-email-s-anna@ti.com> Message-ID: <1392315347-32967-8-git-send-email-s-anna@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Florian Vaussard When booting with a devicetree, no platform data is provided. Do not prematurely exit iommu_enable() and iommu_disable() in such a case. Note: As OMAP do not yet has a proper reset controller driver, IOMMUs requiring a reset signal should use pdata-quirks as a transitional solution. Signed-off-by: Florian Vaussard --- drivers/iommu/omap-iommu.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index f6afe8f..7672eb4 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -149,13 +149,10 @@ static int iommu_enable(struct omap_iommu *obj) struct platform_device *pdev = to_platform_device(obj->dev); struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (!pdata) - return -EINVAL; - if (!arch_iommu) return -ENODEV; - if (pdata->deassert_reset) { + if (pdata && pdata->deassert_reset) { err = pdata->deassert_reset(pdev, pdata->reset_name); if (err) { dev_err(obj->dev, "deassert_reset failed: %d\n", err); @@ -175,14 +172,11 @@ static void iommu_disable(struct omap_iommu *obj) struct platform_device *pdev = to_platform_device(obj->dev); struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (!pdata) - return; - arch_iommu->disable(obj); pm_runtime_put_sync(obj->dev); - if (pdata->assert_reset) + if (pdata && pdata->assert_reset) pdata->assert_reset(pdev, pdata->reset_name); } -- 1.8.5.3