/* * Copyright (c) 2000-2001 Christoph Hellwig. * 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 - object location table support. */ #include #include #include #include "vxfs.h" #include "vxfs_olt.h" #include "vxfs_extern.h" static inline void vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp) { BUG_ON(infp->vsi_fshino); infp->vsi_fshino = fs32_to_cpu(infp, fshp->olt_fsino[0]); } static inline void vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp) { BUG_ON(infp->vsi_iext); infp->vsi_iext = fs32_to_cpu(infp, ilistp->olt_iext[0]); } static inline u_long vxfs_oblock(struct super_block *sbp, daddr_t block, u_long bsize) { BUG_ON(sbp->s_blocksize % bsize); return (block * (sbp->s_blocksize / bsize)); } /** * vxfs_read_olt - read olt * @sbp: superblock of the filesystem * @bsize: blocksize of the filesystem * * Description: * vxfs_read_olt reads the olt of the filesystem described by @sbp * into main memory and does some basic setup. * * Returns: * Zero on success, else a negative error code. */ int vxfs_read_olt(struct super_block *sbp, u_long bsize) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); struct buffer_head *bp; struct vxfs_olt *op; char *oaddr, *eaddr; bp = sb_bread(sbp, vxfs_oblock(sbp, infp->vsi_oltext, bsize)); if (!bp || !bp->b_data) goto fail; op = (struct vxfs_olt *)bp->b_data; if (fs32_to_cpu(infp, op->olt_magic) != VXFS_OLT_MAGIC) { printk(KERN_NOTICE "vxfs: ivalid olt magic number\n"); goto fail; } /* * It is in theory possible that vsi_oltsize is > 1. * I've not seen any such filesystem yet and I'm lazy.. --hch */ if (infp->vsi_oltsize > 1) { printk(KERN_NOTICE "vxfs: oltsize > 1 detected.\n"); printk(KERN_NOTICE "vxfs: please notify hch@infradead.org\n"); goto fail; } oaddr = bp->b_data + fs32_to_cpu(infp, op->olt_size); eaddr = bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize); while (oaddr < eaddr) { struct vxfs_oltcommon *ocp = (struct vxfs_oltcommon *)oaddr; switch (fs32_to_cpu(infp, ocp->olt_type)) { case VXFS_OLT_FSHEAD: vxfs_get_fshead((struct vxfs_oltfshead *)oaddr, infp); break; case VXFS_OLT_ILIST: vxfs_get_ilist((struct vxfs_oltilist *)oaddr, infp); break; } oaddr += fs32_to_cpu(infp, ocp->olt_size); } brelse(bp); return (infp->vsi_fshino && infp->vsi_iext) ? 0 : -EINVAL; fail: brelse(bp); return -EINVAL; } >space:mode:
authorLuuk Paulussen <luuk.paulussen@alliedtelesis.co.nz>2016-12-08 11:43:34 +1300
committerRalf Baechle <ralf@linux-mips.org>2016-12-11 11:19:04 +0100
commitedb6fa1a6452edf736c04d02e3f6de59043df69e (patch)
treef854dd896b1e5033a26f305ec9a50a87b1b13939 /net/tipc/link.c
parent3e5de27e940d00d8d504dfb96625fb654f641509 (diff)
MIPS: Return -ENODEV from weak implementation of rtc_mips_set_time
The sync_cmos_clock function in kernel/time/ntp.c first tries to update the internal clock of the cpu by calling the "update_persistent_clock64" architecture specific function. If this returns -ENODEV, it then tries to update an external RTC using "rtc_set_ntp_time". On the mips architecture, the weak implementation of the underlying function would return 0 if it wasn't overridden. This meant that the sync_cmos_clock function would never try to update an external RTC (if both CONFIG_GENERIC_CMOS_UPDATE and CONFIG_RTC_SYSTOHC are configured) Returning -ENODEV instead, means that an external RTC will be tried. Signed-off-by: Luuk Paulussen <luuk.paulussen@alliedtelesis.co.nz> Reviewed-by: Richard Laing <richard.laing@alliedtelesis.co.nz> Reviewed-by: Scott Parlane <scott.parlane@alliedtelesis.co.nz> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14649/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'net/tipc/link.c')