Revision de5604231ce4bc8db1bc1dcd27d8540cbedf1518 authored by Nick Piggin on 01 February 2010, 11:24:18 UTC, committed by Linus Torvalds on 02 February 2010, 20:50:47 UTC
RCU list walking of the per-cpu vmap cache was broken. It did not use RCU primitives, and also the union of free_list and rcu_head is obviously wrong (because free_list is indeed the list we are RCU walking). While we are there, remove a couple of unused fields from an earlier iteration. These APIs aren't actually used anywhere, because of problems with the XFS conversion. Christoph has now verified that the problems are solved with these patches. Also it is an exported interface, so I think it will be good to be merged now (and Christoph wants to get the XFS changes into their local tree). Cc: stable@kernel.org Cc: linux-mm@kvack.org Tested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Nick Piggin <npiggin@suse.de> -- Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 489b24f
pxa2xx_cm_x270.c
/*
* linux/drivers/pcmcia/pxa/pxa_cm_x270.c
*
* 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.
*
* Compulab Ltd., 2003, 2007, 2008
* Mike Rapoport <mike@compulab.co.il>
*
*/
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include "soc_common.h"
#define GPIO_PCMCIA_S0_CD_VALID (84)
#define GPIO_PCMCIA_S0_RDYINT (82)
#define GPIO_PCMCIA_RESET (53)
#define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
#define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)
static struct pcmcia_irqs irqs[] = {
{ 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
};
static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
if (ret)
return ret;
gpio_direction_output(GPIO_PCMCIA_RESET, 0);
skt->socket.pci_irq = PCMCIA_S0_RDYINT;
ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
if (!ret)
gpio_free(GPIO_PCMCIA_RESET);
return ret;
}
static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
gpio_free(GPIO_PCMCIA_RESET);
}
static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
struct pcmcia_state *state)
{
state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0;
state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1;
state->bvd1 = 1;
state->bvd2 = 1;
state->vs_3v = 0;
state->vs_Xv = 0;
state->wrprot = 0; /* not available */
}
static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
switch (skt->nr) {
case 0:
if (state->flags & SS_RESET) {
gpio_set_value(GPIO_PCMCIA_RESET, 1);
udelay(10);
gpio_set_value(GPIO_PCMCIA_RESET, 0);
}
break;
}
return 0;
}
static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
}
static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
}
static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
.owner = THIS_MODULE,
.hw_init = cmx270_pcmcia_hw_init,
.hw_shutdown = cmx270_pcmcia_shutdown,
.socket_state = cmx270_pcmcia_socket_state,
.configure_socket = cmx270_pcmcia_configure_socket,
.socket_init = cmx270_pcmcia_socket_init,
.socket_suspend = cmx270_pcmcia_socket_suspend,
.nr = 1,
};
static struct platform_device *cmx270_pcmcia_device;
int __init cmx270_pcmcia_init(void)
{
int ret;
cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
if (!cmx270_pcmcia_device)
return -ENOMEM;
ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
sizeof(cmx270_pcmcia_ops));
if (ret == 0) {
printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
ret = platform_device_add(cmx270_pcmcia_device);
}
if (ret)
platform_device_put(cmx270_pcmcia_device);
return ret;
}
void __exit cmx270_pcmcia_exit(void)
{
platform_device_unregister(cmx270_pcmcia_device);
}
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...