From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [ 24/26] vm: convert HPET mmap to vm_iomap_memory() helper
Date: Tue, 23 Apr 2013 14:54:04 -0700 [thread overview]
Message-ID: <20130423215335.863075940@linuxfoundation.org> (raw)
In-Reply-To: <20130423215333.344045754@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Linus Torvalds <torvalds@linux-foundation.org>
commit 2323036dfec8ce3ce6e1c86a49a31b039f3300d1 upstream.
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 <clemens@ladisch.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/char/hpet.c | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -373,26 +373,14 @@ static int hpet_mmap(struct file *file,
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
next prev parent reply other threads:[~2013-04-23 21:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-23 21:53 [ 00/26] 3.4.42-stable review Greg Kroah-Hartman
2013-04-23 21:53 ` [ 01/26] ARM: Do 15e0d9e37c (ARM: pm: let platforms select cpu_suspend support) properly Greg Kroah-Hartman
2013-04-23 21:53 ` [ 02/26] hrtimer: Dont reinitialize a cpu_base lock on CPU_UP Greg Kroah-Hartman
2013-04-23 21:53 ` [ 03/26] can: sja1000: fix handling on dt properties on little endian systems Greg Kroah-Hartman
2013-04-23 21:53 ` [ 04/26] hugetlbfs: add swap entry check in follow_hugetlb_page() Greg Kroah-Hartman
2013-04-24 23:04 ` Ben Hutchings
2013-04-24 23:23 ` Greg Kroah-Hartman
2013-04-26 11:38 ` Naoya Horiguchi
2013-04-26 11:41 ` Ben Hutchings
2013-04-23 21:53 ` [ 05/26] kernel/signal.c: stop info leak via the tkill and the tgkill syscalls Greg Kroah-Hartman
2013-04-23 21:53 ` [ 06/26] hfsplus: fix potential overflow in hfsplus_file_truncate() Greg Kroah-Hartman
2013-04-23 21:53 ` [ 07/26] KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME (CVE-2013-1796) Greg Kroah-Hartman
2013-04-23 21:53 ` [ 08/26] KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797) Greg Kroah-Hartman
2013-04-23 21:53 ` [ 09/26] KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) Greg Kroah-Hartman
2013-04-23 21:53 ` [ 10/26] KVM: Allow cross page reads and writes from cached translations Greg Kroah-Hartman
2013-04-23 21:53 ` [ 11/26] sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s Greg Kroah-Hartman
2013-04-23 21:53 ` [ 12/26] ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon Greg Kroah-Hartman
2013-04-23 21:53 ` [ 13/26] ARM: 7698/1: perf: fix group validation when using enable_on_exec Greg Kroah-Hartman
2013-04-23 21:53 ` [ 14/26] ath9k_htc: accept 1.x firmware newer than 1.3 Greg Kroah-Hartman
2013-04-23 21:53 ` [ 15/26] ath9k_hw: change AR9580 initvals to fix a stability issue Greg Kroah-Hartman
2013-04-23 21:53 ` [ 16/26] ssb: implement spurious tone avoidance Greg Kroah-Hartman
2013-04-23 21:53 ` [ 17/26] crypto: algif - suppress sending source address information in recvmsg Greg Kroah-Hartman
2013-04-23 21:53 ` [ 18/26] perf: Treat attr.config as u64 in perf_swevent_init() Greg Kroah-Hartman
2013-04-23 21:53 ` [ 19/26] perf/x86: Fix offcore_rsp valid mask for SNB/IVB Greg Kroah-Hartman
2013-04-23 21:54 ` [ 20/26] fbcon: fix locking harder Greg Kroah-Hartman
2013-04-23 21:54 ` [ 21/26] vm: add vm_iomap_memory() helper function Greg Kroah-Hartman
2013-04-23 21:54 ` [ 22/26] vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper Greg Kroah-Hartman
2013-04-23 21:54 ` [ 23/26] vm: convert fb_mmap " Greg Kroah-Hartman
2013-04-23 21:54 ` Greg Kroah-Hartman [this message]
2013-04-23 21:54 ` [ 25/26] vm: convert mtdchar mmap " Greg Kroah-Hartman
2013-04-23 21:54 ` [ 26/26] Btrfs: make sure nbytes are right after log replay Greg Kroah-Hartman
2013-04-24 16:24 ` [ 00/26] 3.4.42-stable review Shuah Khan
2013-04-25 10:41 ` Satoru Takeuchi
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