Cast error pointers when returning them as void __iomem *. Fixes a number of Sparse warnings, such as the ones shown below. ../drivers/gpu/drm/tiny/ofdrm.c:439:31: warning: incorrect type in return expression (different address spaces) ../drivers/gpu/drm/tiny/ofdrm.c:439:31: expected void [noderef] __iomem * ../drivers/gpu/drm/tiny/ofdrm.c:439:31: got void * ../drivers/gpu/drm/tiny/ofdrm.c:442:31: warning: incorrect type in return expression (different address spaces) ../drivers/gpu/drm/tiny/ofdrm.c:442:31: expected void [noderef] __iomem * ../drivers/gpu/drm/tiny/ofdrm.c:442:31: got void * See [1] for the bug report. Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> Link: https://lore.kernel.org/dri-devel/202210200016.yiQzPIy0-lkp@xxxxxxxxx/ # [1] --- drivers/gpu/drm/tiny/ofdrm.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/tiny/ofdrm.c b/drivers/gpu/drm/tiny/ofdrm.c index 44f13a2b372be..f1c301820d54b 100644 --- a/drivers/gpu/drm/tiny/ofdrm.c +++ b/drivers/gpu/drm/tiny/ofdrm.c @@ -438,21 +438,21 @@ static void __iomem *get_cmap_address_of(struct ofdrm_device *odev, struct devic if (!addr_p) addr_p = of_get_address(of_node, bar_no, &max_size, &flags); if (!addr_p) - return ERR_PTR(-ENODEV); + return (void __iomem *)ERR_PTR(-ENODEV); if ((flags & (IORESOURCE_IO | IORESOURCE_MEM)) == 0) - return ERR_PTR(-ENODEV); + return (void __iomem *)ERR_PTR(-ENODEV); if ((offset + size) >= max_size) - return ERR_PTR(-ENODEV); + return (void __iomem *)ERR_PTR(-ENODEV); address = of_translate_address(of_node, addr_p); if (address == OF_BAD_ADDR) - return ERR_PTR(-ENODEV); + return (void __iomem *)ERR_PTR(-ENODEV); mem = devm_ioremap(dev->dev, address + offset, size); if (!mem) - return ERR_PTR(-ENOMEM); + return (void __iomem *)ERR_PTR(-ENOMEM); return mem; } @@ -470,7 +470,7 @@ static void __iomem *ofdrm_mach64_cmap_ioremap(struct ofdrm_device *odev, cmap_base = devm_ioremap(dev->dev, address, 0x1000); if (!cmap_base) - return ERR_PTR(-ENOMEM); + return (void __iomem *)ERR_PTR(-ENOMEM); return cmap_base; } @@ -629,11 +629,11 @@ static void __iomem *ofdrm_qemu_cmap_ioremap(struct ofdrm_device *odev, address = of_translate_address(of_node, io_of_addr); if (address == OF_BAD_ADDR) - return ERR_PTR(-ENODEV); + return (void __iomem *)ERR_PTR(-ENODEV); cmap_base = devm_ioremap(dev->dev, address + 0x3c8, 2); if (!cmap_base) - return ERR_PTR(-ENOMEM); + return (void __iomem *)ERR_PTR(-ENOMEM); return cmap_base; } -- 2.38.0
