/* * Copyright (C) 2012 ARM Ltd. * Author: Marc Zyngier * * Adapted for ARM and earlycon: * Copyright (C) 2014 Linaro Ltd. * Author: Rob Herring * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #ifdef CONFIG_THUMB2_KERNEL #define SEMIHOST_SWI "0xab" #else #define SEMIHOST_SWI "0x123456" #endif /* * Semihosting-based debug console */ static void smh_putc(struct uart_port *port, int c) { #ifdef CONFIG_ARM64 asm volatile("mov x1, %0\n" "mov x0, #3\n" "hlt 0xf000\n" : : "r" (&c) : "x0", "x1", "memory"); #else asm volatile("mov r1, %0\n" "mov r0, #3\n" "svc " SEMIHOST_SWI "\n" : : "r" (&c) : "r0", "r1", "memory"); #endif } static void smh_write(struct console *con, const char *s, unsigned n) { struct earlycon_device *dev = con->data; uart_console_write(&dev->port, s, n, smh_putc); } static int __init early_smh_setup(struct earlycon_device *device, const char *opt) { device->con->write = smh_write; return 0; } EARLYCON_DECLARE(smh, early_smh_setup); 1532364'>refslogtreecommitdiff
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authorMarc Kleine-Budde <mkl@pengutronix.de>2016-12-05 11:44:23 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2016-12-07 10:45:57 +0100
commit332b05ca7a438f857c61a3c21a88489a21532364 (patch)
treef30e326f3e623c103bc6e9735e7e958a90ecef20 /net/dccp
parentbc3913a5378cd0ddefd1dfec6917cc12eb23a946 (diff)
can: raw: raw_setsockopt: limit number of can_filter that can be set
This patch adds a check to limit the number of can_filters that can be set via setsockopt on CAN_RAW sockets. Otherwise allocations > MAX_ORDER are not prevented resulting in a warning. Reference: https://lkml.org/lkml/2016/12/2/230 Reported-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/dccp')