/* * linux/fs/hpfs/dentry.c * * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 * * dcache operations */ #include "hpfs_fn.h" /* * Note: the dentry argument is the parent dentry. */ static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { unsigned long hash; int i; unsigned l = qstr->len; if (l == 1) if (qstr->name[0]=='.') goto x; if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x; hpfs_adjust_length(qstr->name, &l); /*if (hpfs_chk_name(qstr->name,&l))*/ /*return -ENAMETOOLONG;*/ /*return -ENOENT;*/ x: hash = init_name_hash(dentry); for (i = 0; i < l; i++) hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash); qstr->hash = end_name_hash(hash); return 0; } static int hpfs_compare_dentry(const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { unsigned al = len; unsigned bl = name->len; hpfs_adjust_length(str, &al); /*hpfs_adjust_length(b->name, &bl);*/ /* * 'str' is the nane of an already existing dentry, so the name * must be valid. 'name' must be validated first. */ if (hpfs_chk_name(name->name, &bl)) return 1; if (hpfs_compare_names(dentry->d_sb, str, al, name->name, bl, 0)) return 1; return 0; } const struct dentry_operations hpfs_dentry_operations = { .d_hash = hpfs_hash_dentry, .d_compare = hpfs_compare_dentry, }; form> net-next plumbingsTobias Klauser
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authorJohan Hovold <johan@kernel.org>2017-01-30 11:26:38 +0100
committerJiri Kosina <jkosina@suse.cz>2017-01-31 12:59:32 +0100
commit7a7b5df84b6b4e5d599c7289526eed96541a0654 (patch)
treecf7514c7ddf4410fe37ca9099a2785e1cf08fa7d /include/uapi/asm-generic/msgbuf.h
parent877a021e08ccb6434718c0cc781fdf943c884cc0 (diff)
HID: cp2112: fix sleep-while-atomic
A recent commit fixing DMA-buffers on stack added a shared transfer buffer protected by a spinlock. This is broken as the USB HID request callbacks can sleep. Fix this up by replacing the spinlock with a mutex. Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable") Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/uapi/asm-generic/msgbuf.h')