diff options
Diffstat (limited to 'drivers/pcmcia/pcmcia_ioctl.c')
| -rw-r--r-- | drivers/pcmcia/pcmcia_ioctl.c | 81 |
1 files changed, 53 insertions, 28 deletions
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c index 80969f7e7a0..c53db7ceda5 100644 --- a/drivers/pcmcia/pcmcia_ioctl.c +++ b/drivers/pcmcia/pcmcia_ioctl.c @@ -18,7 +18,6 @@ */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -70,10 +69,26 @@ extern int ds_pc_debug; #define ds_dbg(lvl, fmt, arg...) do { } while (0) #endif +static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, + unsigned int function) +{ + struct pcmcia_device *p_dev = NULL; + unsigned long flags; + + spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { + if (p_dev->func == function) { + spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + return pcmcia_get_dev(p_dev); + } + } + spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + return NULL; +} /* backwards-compatible accessing of driver --- by name! */ -static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info) +static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) { struct device_driver *drv; struct pcmcia_driver *p_drv; @@ -214,7 +229,7 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) * by userspace before, we need to * return the "instance". */ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - bind_info->instance = p_dev->instance; + bind_info->instance = p_dev; ret = -EBUSY; goto err_put_module; } else { @@ -253,9 +268,9 @@ rescan: /* * Prevent this racing with a card insertion. */ - down(&s->skt_sem); + mutex_lock(&s->skt_mutex); bus_rescan_devices(&pcmcia_bus_type); - up(&s->skt_sem); + mutex_unlock(&s->skt_mutex); /* check whether the driver indeed matched. I don't care if this * is racy or not, because it can only happen on cardmgr access @@ -289,6 +304,7 @@ static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int { dev_node_t *node; struct pcmcia_device *p_dev; + struct pcmcia_driver *p_drv; unsigned long flags; int ret = 0; @@ -343,16 +359,16 @@ static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int found: spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - if ((!p_dev->instance) || - (p_dev->instance->state & DEV_CONFIG_PENDING)) { + p_drv = to_pcmcia_drv(p_dev->dev.driver); + if (p_drv && !p_dev->_locked) { ret = -EAGAIN; goto err_put; } if (first) - node = p_dev->instance->dev; + node = p_dev->dev_node; else - for (node = p_dev->instance->dev; node; node = node->next) + for (node = p_dev->dev_node; node; node = node->next) if (node == bind_info->next) break; if (!node) { @@ -583,14 +599,16 @@ static int ds_ioctl(struct inode * inode, struct file * file, if (buf->config.Function && (buf->config.Function >= s->functions)) ret = CS_BAD_ARGS; - else - ret = pccard_get_configuration_info(s, - buf->config.Function, &buf->config); + else { + struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); + ret = pccard_get_configuration_info(s, p_dev, &buf->config); + pcmcia_put_dev(p_dev); + } break; case DS_GET_FIRST_TUPLE: - down(&s->skt_sem); + mutex_lock(&s->skt_mutex); pcmcia_validate_mem(s); - up(&s->skt_sem); + mutex_unlock(&s->skt_mutex); ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); break; case DS_GET_NEXT_TUPLE: @@ -609,16 +627,19 @@ static int ds_ioctl(struct inode * inode, struct file * file, ret = pccard_reset_card(s); break; case DS_GET_STATUS: - if (buf->status.Function && - (buf->status.Function >= s->functions)) - ret = CS_BAD_ARGS; - else - ret = pccard_get_status(s, buf->status.Function, &buf->status); - break; + if (buf->status.Function && + (buf->status.Function >= s->functions)) + ret = CS_BAD_ARGS; + else { + struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); + ret = pccard_get_status(s, p_dev, &buf->status); + pcmcia_put_dev(p_dev); + } + break; case DS_VALIDATE_CIS: - down(&s->skt_sem); + mutex_lock(&s->skt_mutex); pcmcia_validate_mem(s); - up(&s->skt_sem); + mutex_unlock(&s->skt_mutex); ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo); break; case DS_SUSPEND_CARD: @@ -638,12 +659,16 @@ static int ds_ioctl(struct inode * inode, struct file * file, err = -EPERM; goto free_out; } - if (buf->conf_reg.Function && - (buf->conf_reg.Function >= s->functions)) - ret = CS_BAD_ARGS; - else - ret = pccard_access_configuration_register(s, - buf->conf_reg.Function, &buf->conf_reg); + + ret = CS_BAD_ARGS; + + if (!(buf->conf_reg.Function && + (buf->conf_reg.Function >= s->functions))) { + struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); + if (p_dev) + ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); + pcmcia_put_dev(p_dev); + } break; case DS_GET_FIRST_REGION: case DS_GET_NEXT_REGION: |