litmus-rt-imx6.git - LITMUS^RT and MC^2 V1 support for the i.MX6 processor family.

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author	Linus Torvalds <torvalds@linux-foundation.org>	2008-04-24 11:37:29 -0400
committer	Linus Torvalds <torvalds@linux-foundation.org>	2008-04-24 11:37:29 -0400
commit	e270b51df657011983241ec61a1fc7de186e16cd (patch)
tree	3397be4cbf31676ca6ebb187903e8cfc2218f223 /include/linux/if_fddi.h
parent	8fa82790fb9dfe57aeafc8de6b6a5c1df63efa06 (diff)
parent	227739bf4c110bbd02d0c0f13b272c32de406e4c (diff)

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: (23 commits) sparc: sunzilog uart order [SPARC64]: Detect trap frames in stack backtraces. [SPARC64]: %l6 trap return handling no longer necessary. [SPARC64]: Use trap type stored in pt_regs to handle syscall restart. [SPARC64]: Store magic cookie and trap type in pt_regs. [SPARC64]: PROM debug console can be CON_ANYTIME. sparc64: cleanup after SunOS/Solaris binary emulation removal sparc: cleanup after SunOS binary emulation removal [SPARC64]: Add NUMA support. [SPARC64]: Allocate TSB node-local. [SPARC64]: NUMA device infrastructure. [SPARC64]: Kill pci_iommu_table_init() declaration. [SPARC64]: Once we have the boot cmdline, call parse_early_param() [SPARC64]: Remove unused asm-sparc64/numnodes.h [SPARC64]: Decrease SECTION_SIZE_BITS to 30. [SPARC64]: Initialize MDESC earlier and use lmb_alloc() [SPARC64]: Use lmb_alloc() for PROM device tree. [SPARC64]: Call real_setup_per_cpu_areas() earlier and use lmb_alloc(). [SPARC64]: Fully use LMB information in bootmem_init(). [SPARC64]: Start using LMB information in bootmem_init(). ...

Diffstat (limited to 'include/linux/if_fddi.h')

0 files changed, 0 insertions, 0 deletions

/* * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2001-2007 Red Hat, Inc. * * Created by David Woodhouse <dwmw2@infradead.org> * * For licensing information, see the file 'LICENCE' in this directory. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/slab.h> #include <linux/crc32.h> #include <linux/pagemap.h> #include <linux/mtd/mtd.h> #include <linux/compiler.h> #include "nodelist.h" #include "compr.h" int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fd, unsigned char *buf, int ofs, int len) { struct jffs2_raw_inode *ri; size_t readlen; uint32_t crc; unsigned char *decomprbuf = NULL; unsigned char *readbuf = NULL; int ret = 0; ri = jffs2_alloc_raw_inode(); if (!ri) return -ENOMEM; ret = jffs2_flash_read(c, ref_offset(fd->raw), sizeof(*ri), &readlen, (char *)ri); if (ret) { jffs2_free_raw_inode(ri); pr_warn("Error reading node from 0x%08x: %d\n", ref_offset(fd->raw), ret); return ret; } if (readlen != sizeof(*ri)) { jffs2_free_raw_inode(ri); pr_warn("Short read from 0x%08x: wanted 0x%zx bytes, got 0x%zx\n", ref_offset(fd->raw), sizeof(*ri), readlen); return -EIO; } crc = crc32(0, ri, sizeof(*ri)-8); jffs2_dbg(1, "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n", ref_offset(fd->raw), je32_to_cpu(ri->node_crc), crc, je32_to_cpu(ri->dsize), je32_to_cpu(ri->csize), je32_to_cpu(ri->offset), buf); if (crc != je32_to_cpu(ri->node_crc)) { pr_warn("Node CRC %08x != calculated CRC %08x for node at %08x\n", je32_to_cpu(ri->node_crc), crc, ref_offset(fd->raw)); ret = -EIO; goto out_ri; } /* There was a bug where we wrote hole nodes out with csize/dsize swapped. Deal with it */ if (ri->compr == JFFS2_COMPR_ZERO && !je32_to_cpu(ri->dsize) && je32_to_cpu(ri->csize)) { ri->dsize = ri->csize; ri->csize = cpu_to_je32(0); } D1(if(ofs + len > je32_to_cpu(ri->dsize)) { pr_warn("jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n", len, ofs, je32_to_cpu(ri->dsize)); ret = -EINVAL; goto out_ri; }); if (ri->compr == JFFS2_COMPR_ZERO) { memset(buf, 0, len); goto out_ri; } /* Cases: Reading whole node and it's uncompressed - read directly to buffer provided, check CRC. Reading whole node and it's compressed - read into comprbuf, check CRC and decompress to buffer provided Reading partial node and it's uncompressed - read into readbuf, check CRC, and copy Reading partial node and it's compressed - read into readbuf, check checksum, decompress to decomprbuf and copy */ if (ri->compr == JFFS2_COMPR_NONE && len == je32_to_cpu(ri->dsize)) { readbuf = buf; } else { readbuf = kmalloc(je32_to_cpu(ri->csize), GFP_KERNEL); if (!readbuf) { ret = -ENOMEM; goto out_ri; } } if (ri->compr != JFFS2_COMPR_NONE) { if (len < je32_to_cpu(ri->dsize)) { decomprbuf = kmalloc(je32_to_cpu(ri->dsize), GFP_KERNEL); if (!decomprbuf) { ret = -ENOMEM; goto out_readbuf; } } else { decomprbuf = buf; } } else { decomprbuf = readbuf; } jffs2_dbg(2, "Read %d bytes to %p\n", je32_to_cpu(ri->csize), readbuf); ret = jffs2_flash_read(c, (ref_offset(fd->raw)) + sizeof(*ri), je32_to_cpu(ri->csize), &readlen, readbuf); if (!ret && readlen != je32_to_cpu(ri->csize)) ret = -EIO; if (ret) goto out_decomprbuf; crc = crc32(0, readbuf, je32_to_cpu(ri->csize)); if (crc != je32_to_cpu(ri->data_crc)) { pr_warn("Data CRC %08x != calculated CRC %08x for node at %08x\n", je32_to_cpu(ri->data_crc), crc, ref_offset(fd->raw)); ret = -EIO; goto out_decomprbuf; } jffs2_dbg(2, "Data CRC matches calculated CRC %08x\n", crc); if (ri->compr != JFFS2_COMPR_NONE) { jffs2_dbg(2, "Decompress %d bytes from %p to %d bytes at %p\n", je32_to_cpu(ri->csize), readbuf, je32_to_cpu(ri->dsize), decomprbuf); ret = jffs2_decompress(c, f, ri->compr | (ri->usercompr << 8), readbuf, decomprbuf, je32_to_cpu(ri->csize), je32_to_cpu(ri->dsize)); if (ret) { pr_warn("Error: jffs2_decompress returned %d\n", ret); goto out_decomprbuf; } } if (len < je32_to_cpu(ri->dsize)) {


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