diff options
Diffstat (limited to 'drivers/block/xsysace.c')
-rw-r--r-- | drivers/block/xsysace.c | 75 |
1 files changed, 36 insertions, 39 deletions
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 5d8e0ab3f054..eb8ef65778c3 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -443,22 +443,27 @@ static void ace_fix_driveid(u16 *id) #define ACE_FSM_NUM_STATES 11 /* Set flag to exit FSM loop and reschedule tasklet */ -static inline void ace_fsm_yield(struct ace_device *ace) +static inline void ace_fsm_yieldpoll(struct ace_device *ace) { - dev_dbg(ace->dev, "ace_fsm_yield()\n"); tasklet_schedule(&ace->fsm_tasklet); ace->fsm_continue_flag = 0; } +static inline void ace_fsm_yield(struct ace_device *ace) +{ + dev_dbg(ace->dev, "%s()\n", __func__); + ace_fsm_yieldpoll(ace); +} + /* Set flag to exit FSM loop and wait for IRQ to reschedule tasklet */ static inline void ace_fsm_yieldirq(struct ace_device *ace) { dev_dbg(ace->dev, "ace_fsm_yieldirq()\n"); - if (!ace->irq) - /* No IRQ assigned, so need to poll */ - tasklet_schedule(&ace->fsm_tasklet); - ace->fsm_continue_flag = 0; + if (ace->irq > 0) + ace->fsm_continue_flag = 0; + else + ace_fsm_yieldpoll(ace); } static bool ace_has_next_request(struct request_queue *q) @@ -888,26 +893,20 @@ static unsigned int ace_check_events(struct gendisk *gd, unsigned int clearing) return ace->media_change ? DISK_EVENT_MEDIA_CHANGE : 0; } -static int ace_revalidate_disk(struct gendisk *gd) +static void ace_media_changed(struct ace_device *ace) { - struct ace_device *ace = gd->private_data; unsigned long flags; - dev_dbg(ace->dev, "ace_revalidate_disk()\n"); + dev_dbg(ace->dev, "requesting cf id and scheduling tasklet\n"); - if (ace->media_change) { - dev_dbg(ace->dev, "requesting cf id and scheduling tasklet\n"); - - spin_lock_irqsave(&ace->lock, flags); - ace->id_req_count++; - spin_unlock_irqrestore(&ace->lock, flags); + spin_lock_irqsave(&ace->lock, flags); + ace->id_req_count++; + spin_unlock_irqrestore(&ace->lock, flags); - tasklet_schedule(&ace->fsm_tasklet); - wait_for_completion(&ace->id_completion); - } + tasklet_schedule(&ace->fsm_tasklet); + wait_for_completion(&ace->id_completion); dev_dbg(ace->dev, "revalidate complete\n"); - return ace->id_result; } static int ace_open(struct block_device *bdev, fmode_t mode) @@ -922,7 +921,8 @@ static int ace_open(struct block_device *bdev, fmode_t mode) ace->users++; spin_unlock_irqrestore(&ace->lock, flags); - check_disk_change(bdev); + if (bdev_check_media_change(bdev) && ace->media_change) + ace_media_changed(ace); mutex_unlock(&xsysace_mutex); return 0; @@ -966,7 +966,6 @@ static const struct block_device_operations ace_fops = { .open = ace_open, .release = ace_release, .check_events = ace_check_events, - .revalidate_disk = ace_revalidate_disk, .getgeo = ace_getgeo, }; @@ -1059,12 +1058,12 @@ static int ace_setup(struct ace_device *ace) ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ); /* Now we can hook up the irq handler */ - if (ace->irq) { + if (ace->irq > 0) { rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace); if (rc) { /* Failure - fall back to polled mode */ dev_err(ace->dev, "request_irq failed\n"); - ace->irq = 0; + ace->irq = rc; } } @@ -1080,7 +1079,7 @@ static int ace_setup(struct ace_device *ace) (unsigned long long) ace->physaddr, ace->baseaddr, ace->irq); ace->media_change = 1; - ace_revalidate_disk(ace->gd); + ace_media_changed(ace); /* Make the sysace device 'live' */ add_disk(ace->gd); @@ -1116,7 +1115,7 @@ static void ace_teardown(struct ace_device *ace) tasklet_kill(&ace->fsm_tasklet); - if (ace->irq) + if (ace->irq > 0) free_irq(ace->irq, ace); iounmap(ace->baseaddr); @@ -1129,11 +1128,6 @@ static int ace_alloc(struct device *dev, int id, resource_size_t physaddr, int rc; dev_dbg(dev, "ace_alloc(%p)\n", dev); - if (!physaddr) { - rc = -ENODEV; - goto err_noreg; - } - /* Allocate and initialize the ace device structure */ ace = kzalloc(sizeof(struct ace_device), GFP_KERNEL); if (!ace) { @@ -1159,7 +1153,6 @@ err_setup: dev_set_drvdata(dev, NULL); kfree(ace); err_alloc: -err_noreg: dev_err(dev, "could not initialize device, err=%i\n", rc); return rc; } @@ -1182,10 +1175,11 @@ static void ace_free(struct device *dev) static int ace_probe(struct platform_device *dev) { - resource_size_t physaddr = 0; int bus_width = ACE_BUS_WIDTH_16; /* FIXME: should not be hard coded */ + resource_size_t physaddr; + struct resource *res; u32 id = dev->id; - int irq = 0; + int irq; int i; dev_dbg(&dev->dev, "ace_probe(%p)\n", dev); @@ -1196,12 +1190,15 @@ static int ace_probe(struct platform_device *dev) if (of_find_property(dev->dev.of_node, "8-bit", NULL)) bus_width = ACE_BUS_WIDTH_8; - for (i = 0; i < dev->num_resources; i++) { - if (dev->resource[i].flags & IORESOURCE_MEM) - physaddr = dev->resource[i].start; - if (dev->resource[i].flags & IORESOURCE_IRQ) - irq = dev->resource[i].start; - } + res = platform_get_resource(dev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + physaddr = res->start; + if (!physaddr) + return -ENODEV; + + irq = platform_get_irq_optional(dev, 0); /* Call the bus-independent setup code */ return ace_alloc(&dev->dev, id, physaddr, irq, bus_width); |