From e2d4096365e06b9a3799afbadc28b4519c0b3526 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 2 Mar 2006 00:09:29 +0100 Subject: [PATCH] pcmcia: use bitfield instead of p_state and state Instead of the two status values struct pcmcia_device->p_state and state, use descriptive bitfields. Most value-checking in drivers was invalid, as the core now only calls the ->remove() (a.k.a. detach) function in case the attachement _and_ configuration was successful. Signed-off-by: Dominik Brodowski --- drivers/char/pcmcia/cm4000_cs.c | 13 +++---------- drivers/char/pcmcia/cm4040_cs.c | 16 ++++------------ drivers/char/pcmcia/synclink_cs.c | 28 ++++++++++------------------ 3 files changed, 17 insertions(+), 40 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index 22dce9d..16e105d 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -971,7 +971,7 @@ static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count, if (count == 0) /* according to manpage */ return 0; - if ((dev->p_dev->state & DEV_PRESENT) == 0 || /* socket removed */ + if (!pcmcia_dev_present(dev->p_dev) || /* device removed */ test_bit(IS_CMM_ABSENT, &dev->flags)) return -ENODEV; @@ -1108,7 +1108,7 @@ static ssize_t cmm_write(struct file *filp, const char __user *buf, sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0; - if ((dev->p_dev->state & DEV_PRESENT) == 0 || /* socket removed */ + if (!pcmcia_dev_present(dev->p_dev) || /* device removed */ test_bit(IS_CMM_ABSENT, &dev->flags)) return -ENODEV; @@ -1789,7 +1789,6 @@ static int cm4000_config(struct pcmcia_device * link, int devno) goto cs_failed; } - link->state |= DEV_CONFIG; link->conf.ConfigBase = parse.config.base; link->conf.Present = parse.config.rmask[0]; @@ -1844,7 +1843,6 @@ static int cm4000_config(struct pcmcia_device * link, int devno) dev->node.minor = devno; dev->node.next = NULL; link->dev_node = &dev->node; - link->state &= ~DEV_CONFIG_PENDING; return 0; @@ -1852,8 +1850,6 @@ cs_failed: cs_error(link, fail_fn, fail_rc); cs_release: cm4000_release(link); - - link->state &= ~DEV_CONFIG_PENDING; return -ENODEV; } @@ -1913,7 +1909,6 @@ static int cm4000_probe(struct pcmcia_device *link) init_waitqueue_head(&dev->atrq); init_waitqueue_head(&dev->readq); - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; ret = cm4000_config(link, i); if (ret) return ret; @@ -1936,11 +1931,9 @@ static void cm4000_detach(struct pcmcia_device *link) if (devno == CM4000_MAX_DEV) return; - link->state &= ~DEV_PRESENT; stop_monitor(dev); - if (link->state & DEV_CONFIG) - cm4000_release(link); + cm4000_release(link); dev_table[devno] = NULL; kfree(dev); diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c index 6ccca8c..74609c3 100644 --- a/drivers/char/pcmcia/cm4040_cs.c +++ b/drivers/char/pcmcia/cm4040_cs.c @@ -246,7 +246,7 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf, return -EAGAIN; } - if ((dev->p_dev->state & DEV_PRESENT)==0) + if (!pcmcia_dev_present(dev->p_dev)) return -ENODEV; for (i = 0; i < 5; i++) { @@ -351,7 +351,7 @@ static ssize_t cm4040_write(struct file *filp, const char __user *buf, return -EAGAIN; } - if ((dev->p_dev->state & DEV_PRESENT) == 0) + if (!pcmcia_dev_present(dev->p_dev)) return -ENODEV; bytes_to_write = count; @@ -543,7 +543,6 @@ static int reader_config(struct pcmcia_device *link, int devno) goto cs_failed; } - link->state |= DEV_CONFIG; link->conf.ConfigBase = parse.config.base; link->conf.Present = parse.config.rmask[0]; @@ -602,9 +601,7 @@ static int reader_config(struct pcmcia_device *link, int devno) sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno); dev->node.major = major; dev->node.minor = devno; - dev->node.next = NULL; - link->dev_node = &dev->node; - link->state &= ~DEV_CONFIG_PENDING; + dev->node.next = &dev->node; DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno, link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1); @@ -616,7 +613,6 @@ cs_failed: cs_error(link, fail_fn, fail_rc); cs_release: reader_release(link); - link->state &= ~DEV_CONFIG_PENDING; return -ENODEV; } @@ -659,7 +655,6 @@ static int reader_probe(struct pcmcia_device *link) init_timer(&dev->poll_timer); dev->poll_timer.function = &cm4040_do_poll; - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; ret = reader_config(link, i); if (ret) return ret; @@ -683,10 +678,7 @@ static void reader_detach(struct pcmcia_device *link) if (devno == CM_MAX_DEV) return; - link->state &= ~DEV_PRESENT; - - if (link->state & DEV_CONFIG) - reader_release(link); + reader_release(link); dev_table[devno] = NULL; kfree(dev); diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index ef7a813..0721345 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -578,7 +578,6 @@ static int mgslpc_probe(struct pcmcia_device *link) link->conf.Attributes = 0; link->conf.IntType = INT_MEMORY_AND_IO; - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; ret = mgslpc_config(link); if (ret) return ret; @@ -618,9 +617,6 @@ static int mgslpc_config(struct pcmcia_device *link) CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); link->conf.ConfigBase = parse.config.base; link->conf.Present = parse.config.rmask[0]; - - /* Configure card */ - link->state |= DEV_CONFIG; /* get CIS configuration entry */ @@ -681,8 +677,6 @@ static int mgslpc_config(struct pcmcia_device *link) printk(", io 0x%04x-0x%04x", link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1-1); printk("\n"); - - link->state &= ~DEV_CONFIG_PENDING; return 0; cs_failed: @@ -697,25 +691,23 @@ cs_failed: */ static void mgslpc_release(u_long arg) { - struct pcmcia_device *link = (struct pcmcia_device *)arg; + struct pcmcia_device *link = (struct pcmcia_device *)arg; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_release(0x%p)\n", link); + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_release(0x%p)\n", link); - pcmcia_disable_device(link); + pcmcia_disable_device(link); } static void mgslpc_detach(struct pcmcia_device *link) { - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_detach(0x%p)\n", link); + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_detach(0x%p)\n", link); - if (link->state & DEV_CONFIG) { - ((MGSLPC_INFO *)link->priv)->stop = 1; - mgslpc_release((u_long)link); - } + ((MGSLPC_INFO *)link->priv)->stop = 1; + mgslpc_release((u_long)link); - mgslpc_remove_device((MGSLPC_INFO *)link->priv); + mgslpc_remove_device((MGSLPC_INFO *)link->priv); } static int mgslpc_suspend(struct pcmcia_device *link) @@ -1254,7 +1246,7 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id, struct pt_regs * regs) if (!info) return IRQ_NONE; - if (!(info->p_dev->state & DEV_CONFIG)) + if (!(info->p_dev->_locked)) return IRQ_HANDLED; spin_lock(&info->lock); -- cgit v1.1