target/linux/ath79/patches-4.19/0050-v5.1-drivers-provide-devm_platform_ioremap_resource.patch

   1 From 7945f929f1a77a1c8887a97ca07f87626858ff42 Mon Sep 17 00:00:00 2001
   2 From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
   3 Date: Wed, 20 Feb 2019 11:12:39 +0000
   4 Subject: [PATCH] drivers: provide devm_platform_ioremap_resource()
   5
   6 There are currently 1200+ instances of using platform_get_resource()
   7 and devm_ioremap_resource() together in the kernel tree.
   8
   9 This patch wraps these two calls in a single helper. Thanks to that
  10 we don't have to declare a local variable for struct resource * and can
  11 omit the redundant argument for resource type. We also have one
  12 function call less.
  13
  14 Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
  15 Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  16 Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
  17 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  18 ---
  19  drivers/base/platform.c         | 18 ++++++++++++++++++
  20  include/linux/platform_device.h |  3 +++
  21  2 files changed, 21 insertions(+)
  22
  23 --- a/drivers/base/platform.c
  24 +++ b/drivers/base/platform.c
  25 @@ -81,6 +81,24 @@ struct resource *platform_get_resource(s
  26  EXPORT_SYMBOL_GPL(platform_get_resource);
  27
  28  /**
  29 + * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
  30 + *                                 device
  31 + *
  32 + * @pdev: platform device to use both for memory resource lookup as well as
  33 + *        resource managemend
  34 + * @index: resource index
  35 + */
  36 +void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
  37 +                                            unsigned int index)
  38 +{
  39 +       struct resource *res;
  40 +
  41 +       res = platform_get_resource(pdev, IORESOURCE_MEM, index);
  42 +       return devm_ioremap_resource(&pdev->dev, res);
  43 +}
  44 +EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
  45 +
  46 +/**
  47   * platform_get_irq - get an IRQ for a device
  48   * @dev: platform device
  49   * @num: IRQ number index
  50 --- a/include/linux/platform_device.h
  51 +++ b/include/linux/platform_device.h
  52 @@ -51,6 +51,9 @@ extern struct device platform_bus;
  53  extern void arch_setup_pdev_archdata(struct platform_device *);
  54  extern struct resource *platform_get_resource(struct platform_device *,
  55                                               unsigned int, unsigned int);
  56 +extern void __iomem *
  57 +devm_platform_ioremap_resource(struct platform_device *pdev,
  58 +                              unsigned int index);
  59  extern int platform_get_irq(struct platform_device *, unsigned int);
  60  extern int platform_irq_count(struct platform_device *);
  61  extern struct resource *platform_get_resource_byname(struct platform_device *,