/* * Copyright (c) 2010 Werner Fink, Jiri Slaby * * Licensed under GPLv2 */ #include #include #include #include #include /* * This is handler for /proc/consoles */ static int show_console_dev(struct seq_file *m, void *v) { static const struct { short flag; char name; } con_flags[] = { { CON_ENABLED, 'E' }, { CON_CONSDEV, 'C' }, { CON_BOOT, 'B' }, { CON_PRINTBUFFER, 'p' }, { CON_BRL, 'b' }, { CON_ANYTIME, 'a' }, }; char flags[ARRAY_SIZE(con_flags) + 1]; struct console *con = v; unsigned int a; dev_t dev = 0; if (con->device) { const struct tty_driver *driver; int index; driver = con->device(con, &index); if (driver) { dev = MKDEV(driver->major, driver->minor_start); dev += index; } } for (a = 0; a < ARRAY_SIZE(con_flags); a++) flags[a] = (con->flags & con_flags[a].flag) ? con_flags[a].name : ' '; flags[a] = 0; seq_setwidth(m, 21 - 1); seq_printf(m, "%s%d", con->name, con->index); seq_pad(m, ' '); seq_printf(m, "%c%c%c (%s)", con->read ? 'R' : '-', con->write ? 'W' : '-', con->unblank ? 'U' : '-', flags); if (dev) seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev)); seq_printf(m, "\n"); return 0; } static void *c_start(struct seq_file *m, loff_t *pos) { struct console *con; loff_t off = 0; console_lock(); for_each_console(con) if (off++ == *pos) break; return con; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) { struct console *con = v; ++*pos; return con->next; } static void c_stop(struct seq_file *m, void *v) { console_unlock(); } static const struct seq_operations consoles_op = { .start = c_start, .next = c_next, .stop = c_stop, .show = show_console_dev }; static int consoles_open(struct inode *inode, struct file *file) { return seq_open(file, &consoles_op); } static const struct file_operations proc_consoles_operations = { .open = consoles_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static int __init proc_consoles_init(void) { proc_create("consoles", 0, NULL, &proc_consoles_operations); return 0; } fs_initcall(proc_consoles_init); /altr,rst-mgr-a10.h?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>diff
path: root/include/dt-bindings/reset/altr,rst-mgr-a10.h
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authorChristoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /include/dt-bindings/reset/altr,rst-mgr-a10.h
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/dt-bindings/reset/altr,rst-mgr-a10.h')