package/kernel/mac80211/patches/build/010-headers-Add-devm_platform_get_and_ioremap_resource.patch

   1 From d49395058c6bd4fb7b8bcc5ff7b4d7fbd9b6f97b Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 24 Oct 2021 14:49:55 +0200
   4 Subject: [PATCH] headers: Add devm_platform_get_and_ioremap_resource()
   5
   6 This function is copied from kernel 5.7 and used by mt76, ath10k and
   7 ath11k. devm_platform_ioremap_resource() was changed to make sue of
   8 this new function.
   9
  10 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  11 ---
  12  .../backport-include/linux/platform_device.h  | 45 ++++++++++++++++---
  13  1 file changed, 38 insertions(+), 7 deletions(-)
  14
  15 --- a/backport-include/linux/platform_device.h
  16 +++ b/backport-include/linux/platform_device.h
  17 @@ -33,7 +33,39 @@ module_exit(__platform_driver##_exit);
  18                          platform_driver_unregister)
  19  #endif
  20
  21 +#if LINUX_VERSION_IS_LESS(5,7,0)
  22 +#ifdef CONFIG_HAS_IOMEM
  23 +#define devm_platform_get_and_ioremap_resource LINUX_BACKPORT(devm_platform_get_and_ioremap_resource)
  24 +/**
  25 + * devm_platform_get_and_ioremap_resource - call devm_ioremap_resource() for a
  26 + *                                         platform device and get resource
  27 + *
  28 + * @pdev: platform device to use both for memory resource lookup as well as
  29 + *        resource management
  30 + * @index: resource index
  31 + * @res: optional output parameter to store a pointer to the obtained resource.
  32 + *
  33 + * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
  34 + * on failure.
  35 + */
  36 +static inline void __iomem *
  37 +devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
  38 +                               unsigned int index, struct resource **res)
  39 +{
  40 +       struct resource *r;
  41 +
  42 +       r = platform_get_resource(pdev, IORESOURCE_MEM, index);
  43 +       if (res)
  44 +               *res = r;
  45 +       return devm_ioremap_resource(&pdev->dev, r);
  46 +}
  47 +#endif /* CONFIG_HAS_IOMEM */
  48 +#endif /* < 5.7 */
  49 +
  50  #if LINUX_VERSION_IS_LESS(5,1,0)
  51 +
  52 +#ifdef CONFIG_HAS_IOMEM
  53 +#define devm_platform_ioremap_resource LINUX_BACKPORT(devm_platform_ioremap_resource)
  54  /**
  55   * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
  56   *                                 device
  57 @@ -41,16 +73,15 @@ module_exit(__platform_driver##_exit);
  58   * @pdev: platform device to use both for memory resource lookup as well as
  59   *        resource management
  60   * @index: resource index
  61 + *
  62 + * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code
  63 + * on failure.
  64   */
  65 -#ifdef CONFIG_HAS_IOMEM
  66 -#define devm_platform_ioremap_resource LINUX_BACKPORT(devm_platform_ioremap_resource)
  67 -static inline void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
  68 +static inline void __iomem *
  69 +devm_platform_ioremap_resource(struct platform_device *pdev,
  70                                              unsigned int index)
  71  {
  72 -       struct resource *res;
  73 -
  74 -       res = platform_get_resource(pdev, IORESOURCE_MEM, index);
  75 -       return devm_ioremap_resource(&pdev->dev, res);
  76 +       return devm_platform_get_and_ioremap_resource(pdev, index, NULL);
  77  }
  78  #endif /* CONFIG_HAS_IOMEM */
  79  #endif