/* * Copyright (c) 2000-2001 Christoph Hellwig. * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Veritas filesystem driver - fileset header routines. */ #include #include #include #include #include #include "vxfs.h" #include "vxfs_inode.h" #include "vxfs_extern.h" #include "vxfs_fshead.h" #ifdef DIAGNOSTIC static void vxfs_dumpfsh(struct vxfs_fsh *fhp) { printk("\n\ndumping fileset header:\n"); printk("----------------------------\n"); printk("version: %u\n", fhp->fsh_version); printk("fsindex: %u\n", fhp->fsh_fsindex); printk("iauino: %u\tninodes:%u\n", fhp->fsh_iauino, fhp->fsh_ninodes); printk("maxinode: %u\tlctino: %u\n", fhp->fsh_maxinode, fhp->fsh_lctino); printk("nau: %u\n", fhp->fsh_nau); printk("ilistino[0]: %u\tilistino[1]: %u\n", fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]); } #endif /** * vxfs_getfsh - read fileset header into memory * @ip: the (fake) fileset header inode * @which: 0 for the structural, 1 for the primary fsh. * * Description: * vxfs_getfsh reads either the structural or primary fileset header * described by @ip into memory. * * Returns: * The fileset header structure on success, else Zero. */ static struct vxfs_fsh * vxfs_getfsh(struct inode *ip, int which) { struct buffer_head *bp; bp = vxfs_bread(ip, which); if (bp) { struct vxfs_fsh *fhp; if (!(fhp = kmalloc(sizeof(*fhp), GFP_KERNEL))) goto out; memcpy(fhp, bp->b_data, sizeof(*fhp)); put_bh(bp); return (fhp); } out: brelse(bp); return NULL; } /** * vxfs_read_fshead - read the fileset headers * @sbp: superblock to which the fileset belongs * * Description: * vxfs_read_fshead will fill the inode and structural inode list in @sb. * * Returns: * Zero on success, else a negative error code (-EINVAL). */ int vxfs_read_fshead(struct super_block *sbp) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); struct vxfs_fsh *pfp, *sfp; struct vxfs_inode_info *vip; infp->vsi_fship = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino); if (!infp->vsi_fship) { printk(KERN_ERR "vxfs: unable to read fsh inode\n"); return -EINVAL; } vip = VXFS_INO(infp->vsi_fship); if (!VXFS_ISFSH(vip)) { printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n", vip->vii_mode & VXFS_TYPE_MASK); goto out_iput_fship; } #ifdef DIAGNOSTIC printk("vxfs: fsh inode dump:\n"); vxfs_dumpi(vip, infp->vsi_fshino); #endif sfp = vxfs_getfsh(infp->vsi_fship, 0); if (!sfp) { printk(KERN_ERR "vxfs: unable to get structural fsh\n"); goto out_iput_fship; } #ifdef DIAGNOSTIC vxfs_dumpfsh(sfp); #endif pfp = vxfs_getfsh(infp->vsi_fship, 1); if (!pfp) { printk(KERN_ERR "vxfs: unable to get primary fsh\n"); goto out_free_sfp; } #ifdef DIAGNOSTIC vxfs_dumpfsh(pfp); #endif infp->vsi_stilist = vxfs_blkiget(sbp, infp->vsi_iext, fs32_to_cpu(infp, sfp->fsh_ilistino[0])); if (!infp->vsi_stilist) { printk(KERN_ERR "vxfs: unable to get structural list inode\n"); goto out_free_pfp; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) { printk(KERN_ERR "vxfs: structural list inode is of wrong type (%x)\n", VXFS_INO(infp->vsi_stilist)->vii_mode & VXFS_TYPE_MASK); goto out_iput_stilist; } infp->vsi_ilist = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0])); if (!infp->vsi_ilist) { printk(KERN_ERR "vxfs: unable to get inode list inode\n"); goto out_iput_stilist; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) { printk(KERN_ERR "vxfs: inode list inode is of wrong type (%x)\n", VXFS_INO(infp->vsi_ilist)->vii_mode & VXFS_TYPE_MASK); goto out_iput_ilist; } kfree(pfp); kfree(sfp); return 0; out_iput_ilist: iput(infp->vsi_ilist); out_iput_stilist: iput(infp->vsi_stilist); out_free_pfp: kfree(pfp); out_free_sfp: kfree(sfp); out_iput_fship: iput(infp->vsi_fship); return -EINVAL; } 6a16ee8c'>08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch) tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /tools/testing/selftests/ptp/Makefile parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/testing/selftests/ptp/Makefile')