lkml.org 
[lkml]   [2018]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v7 03/14] iommu/rockchip: Request irqs in rk_iommu_probe()
From
Date
On 06/03/18 03:02, Jeffy Chen wrote:
> Move request_irq to the end of rk_iommu_probe().

Acked-by: Robin Murphy <robin.murphy@arm.com>

> Suggested-by: Robin Murphy <robin.murphy@arm.com>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> Reviewed-by: Tomasz Figa <tfiga@chromium.org>
> ---
>
> Changes in v7: None
> Changes in v6: None
> Changes in v5: None
> Changes in v4: None
> Changes in v3:
> Loop platform_get_irq() as Robin suggested.
>
> Changes in v2: None
>
> drivers/iommu/rockchip-iommu.c | 38 +++++++++-----------------------------
> 1 file changed, 9 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
> index c2ef3cbd4401..b743d82e6fe1 100644
> --- a/drivers/iommu/rockchip-iommu.c
> +++ b/drivers/iommu/rockchip-iommu.c
> @@ -90,8 +90,6 @@ struct rk_iommu {
> struct device *dev;
> void __iomem **bases;
> int num_mmu;
> - int *irq;
> - int num_irq;
> bool reset_disabled;
> struct iommu_device iommu;
> struct list_head node; /* entry in rk_iommu_domain.iommus */
> @@ -830,13 +828,6 @@ static int rk_iommu_attach_device(struct iommu_domain *domain,
>
> iommu->domain = domain;
>
> - for (i = 0; i < iommu->num_irq; i++) {
> - ret = devm_request_irq(iommu->dev, iommu->irq[i], rk_iommu_irq,
> - IRQF_SHARED, dev_name(dev), iommu);
> - if (ret)
> - return ret;
> - }
> -
> for (i = 0; i < iommu->num_mmu; i++) {
> rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR,
> rk_domain->dt_dma);
> @@ -885,9 +876,6 @@ static void rk_iommu_detach_device(struct iommu_domain *domain,
> }
> rk_iommu_disable_stall(iommu);
>
> - for (i = 0; i < iommu->num_irq; i++)
> - devm_free_irq(iommu->dev, iommu->irq[i], iommu);
> -
> iommu->domain = NULL;
>
> dev_dbg(dev, "Detached from iommu domain\n");
> @@ -1138,7 +1126,7 @@ static int rk_iommu_probe(struct platform_device *pdev)
> struct rk_iommu *iommu;
> struct resource *res;
> int num_res = pdev->num_resources;
> - int err, i;
> + int err, i, irq;
>
> iommu = devm_kzalloc(dev, sizeof(*iommu), GFP_KERNEL);
> if (!iommu)
> @@ -1165,23 +1153,15 @@ static int rk_iommu_probe(struct platform_device *pdev)
> if (iommu->num_mmu == 0)
> return PTR_ERR(iommu->bases[0]);
>
> - iommu->num_irq = platform_irq_count(pdev);
> - if (iommu->num_irq < 0)
> - return iommu->num_irq;
> - if (iommu->num_irq == 0)
> - return -ENXIO;
> + i = 0;
> + while ((irq = platform_get_irq(pdev, i++)) != -ENXIO) {
> + if (irq < 0)
> + return irq;
>
> - iommu->irq = devm_kcalloc(dev, iommu->num_irq, sizeof(*iommu->irq),
> - GFP_KERNEL);
> - if (!iommu->irq)
> - return -ENOMEM;
> -
> - for (i = 0; i < iommu->num_irq; i++) {
> - iommu->irq[i] = platform_get_irq(pdev, i);
> - if (iommu->irq[i] < 0) {
> - dev_err(dev, "Failed to get IRQ, %d\n", iommu->irq[i]);
> - return -ENXIO;
> - }
> + err = devm_request_irq(iommu->dev, irq, rk_iommu_irq,
> + IRQF_SHARED, dev_name(dev), iommu);
> + if (err)
> + return err;
> }
>
> iommu->reset_disabled = device_property_read_bool(dev,
>

\
 
 \ /
  Last update: 2018-03-07 14:01    [W:0.111 / U:44.724 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site