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fbdev: Avoid file argument in fb_pgprotect()

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Only PowerPC's fb_pgprotect() needs the file argument, although
the implementation in either phys_mem_access_prot() or
pci_phys_mem_access_prot() does not use it. Pass NULL to the internal
helper in preparation of further updates. A later patch will remove
the file parameter from fb_pgprotect().

While at it, replace the shift operation with PHYS_PFN().

v5:
	* state function names in commit description (Javier)

Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230922080636.26762-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-22 10:04:55 +02:00
parent 3f257bc63c
commit c205a67d28
1 changed files with 6 additions and 1 deletions
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7
arch/powerpc/include/asm/fb.h
View File

@ -9,7 +9,12 @@
static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
unsigned long off)
{
vma->vm_page_prot = phys_mem_access_prot(file, off >> PAGE_SHIFT,
/*
* PowerPC's implementation of phys_mem_access_prot() does
* not use the file argument. Set it to NULL in preparation
* of later updates to the interface.
*/
vma->vm_page_prot = phys_mem_access_prot(NULL, PHYS_PFN(off),
vma->vm_end - vma->vm_start,
vma->vm_page_prot);
}