Message ID | 20230911131033.27745-2-tzimmermann@suse.de |
---|---|
State | New |
Headers | show
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Mon, 11 Sep 2023 13:10:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id wAH8Hs4R/2SCIwAAMHmgww (envelope-from <tzimmermann@suse.de>); Mon, 11 Sep 2023 13:10:38 +0000 From: Thomas Zimmermann <tzimmermann@suse.de> To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann <tzimmermann@suse.de> Subject: [PATCH v3 1/5] fbdev: Avoid file argument in fb_pgprotect() Date: Mon, 11 Sep 2023 15:08:31 +0200 Message-ID: <20230911131033.27745-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911131033.27745-1-tzimmermann@suse.de> References: <20230911131033.27745-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <sparclinux.vger.kernel.org> X-Mailing-List: sparclinux@vger.kernel.org |
Series |
ppc, fbdev: Clean up fbdev mmap helper
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expand
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diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h index 5f1a2e5f76548..61e3b8806db69 100644 --- a/arch/powerpc/include/asm/fb.h +++ b/arch/powerpc/include/asm/fb.h @@ -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); }
Only PowerPC's fb_pgprotect() needs the file argument, although the implementation 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(). Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- arch/powerpc/include/asm/fb.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)