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firmware: sysfb: Make sysfb_create_simplefb() return a pdev pointer

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This function just returned 0 on success or an errno code on error, but it
could be useful for sysfb_init() callers to have a pointer to the device.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220607182338.344270-2-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas 2022-06-07 20:23:34 +02:00
parent 5f701324c0
commit 9e121040e5
No known key found for this signature in database
GPG Key ID: C751E590D63F3D69
3 changed files with 15 additions and 15 deletions
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4
drivers/firmware/sysfb.c
View File

@ -46,8 +46,8 @@ static __init int sysfb_init(void)
/* try to create a simple-framebuffer device */
compatible = sysfb_parse_mode(si, &mode);
if (compatible) {
ret = sysfb_create_simplefb(si, &mode);
if (!ret)
pd = sysfb_create_simplefb(si, &mode);
if (!IS_ERR(pd))
return 0;
}

16
drivers/firmware/sysfb_simplefb.c
View File

@ -57,8 +57,8 @@ __init bool sysfb_parse_mode(const struct screen_info *si,
return false;
}
__init int sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode)
__init struct platform_device *sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode)
{
struct platform_device *pd;
struct resource res;
@ -76,7 +76,7 @@ __init int sysfb_create_simplefb(const struct screen_info *si,
base |= (u64)si->ext_lfb_base << 32;
if (!base || (u64)(resource_size_t)base != base) {
printk(KERN_DEBUG "sysfb: inaccessible VRAM base\n");
return -EINVAL;
return ERR_PTR(-EINVAL);
}
/*
@ -93,7 +93,7 @@ __init int sysfb_create_simplefb(const struct screen_info *si,
length = mode->height * mode->stride;
if (length > size) {
printk(KERN_WARNING "sysfb: VRAM smaller than advertised\n");
return -EINVAL;
return ERR_PTR(-EINVAL);
}
length = PAGE_ALIGN(length);
@ -104,11 +104,11 @@ __init int sysfb_create_simplefb(const struct screen_info *si,
res.start = base;
res.end = res.start + length - 1;
if (res.end <= res.start)
return -EINVAL;
return ERR_PTR(-EINVAL);
pd = platform_device_alloc("simple-framebuffer", 0);
if (!pd)
return -ENOMEM;
return ERR_PTR(-ENOMEM);
sysfb_apply_efi_quirks(pd);
@ -124,10 +124,10 @@ __init int sysfb_create_simplefb(const struct screen_info *si,
if (ret)
goto err_put_device;
return 0;
return pd;
err_put_device:
platform_device_put(pd);
return ret;
return ERR_PTR(ret);
}

10
include/linux/sysfb.h
View File

@ -72,8 +72,8 @@ static inline void sysfb_apply_efi_quirks(struct platform_device *pd)
bool sysfb_parse_mode(const struct screen_info *si,
struct simplefb_platform_data *mode);
int sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode);
struct platform_device *sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode);
#else /* CONFIG_SYSFB_SIMPLE */
@ -83,10 +83,10 @@ static inline bool sysfb_parse_mode(const struct screen_info *si,
return false;
}
static inline int sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode)
static inline struct platform_device *sysfb_create_simplefb(const struct screen_info *si,
const struct simplefb_platform_data *mode)
{
return -EINVAL;
return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_SYSFB_SIMPLE */