From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760034Ab3EGEfy (ORCPT ); Tue, 7 May 2013 00:35:54 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:13075 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932507Ab3EGEZv (ORCPT ); Tue, 7 May 2013 00:25:51 -0400 X-Authority-Analysis: v=2.0 cv=cOZiQyiN c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=Ciwy3NGCPMMA:10 a=OMtK5XQDKzQA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=PcfeZpVhSdUA:10 a=Z4Rwk6OoAAAA:8 a=weg8JgaIAAAA:8 a=fC4T7qsy4_4xvlMS5R0A:9 a=jbrJJM5MRmoA:10 a=7t4jVOfIR2gA:10 a=jeBq3FmKZ4MA:10 a=fnfuqj9jWGcA:10 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 74.67.115.198 Message-Id: <20130507035855.513733095@goodmis.org> User-Agent: quilt/0.60-1 Date: Mon, 06 May 2013 23:58:39 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [087/126] vm: convert HPET mmap to vm_iomap_memory() helper References: <20130507035712.909872333@goodmis.org> Content-Disposition: inline; filename=0087-vm-convert-HPET-mmap-to-vm_iomap_memory-helper.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.6.11.3 stable review patch. If anyone has any objections, please let me know. ------------------ From: Linus Torvalds [ Upstream commit 2323036dfec8ce3ce6e1c86a49a31b039f3300d1 ] This is my example conversion of a few existing mmap users. The HPET case is simple, widely available, and easy to test (Clemens Ladisch sent a trivial test-program for it). Test-program-by: Clemens Ladisch Signed-off-by: Linus Torvalds Signed-off-by: Steven Rostedt --- drivers/char/hpet.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index dfd7876..0ff5c2e 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -373,26 +373,14 @@ static int hpet_mmap(struct file *file, struct vm_area_struct *vma) struct hpet_dev *devp; unsigned long addr; - if (((vma->vm_end - vma->vm_start) != PAGE_SIZE) || vma->vm_pgoff) - return -EINVAL; - devp = file->private_data; addr = devp->hd_hpets->hp_hpet_phys; if (addr & (PAGE_SIZE - 1)) return -ENOSYS; - vma->vm_flags |= VM_IO; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - if (io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, - PAGE_SIZE, vma->vm_page_prot)) { - printk(KERN_ERR "%s: io_remap_pfn_range failed\n", - __func__); - return -EAGAIN; - } - - return 0; + return vm_iomap_memory(vma, addr, PAGE_SIZE); #else return -ENOSYS; #endif -- 1.7.10.4