diff options
Diffstat (limited to 'drivers/ide/falconide.c')
| -rw-r--r-- | drivers/ide/falconide.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/ide/falconide.c b/drivers/ide/falconide.c index a638e952d67..d4d7ff1a351 100644 --- a/drivers/ide/falconide.c +++ b/drivers/ide/falconide.c @@ -40,8 +40,27 @@ * which is shared between several drivers. */ -int falconide_intr_lock; -EXPORT_SYMBOL(falconide_intr_lock); +static int falconide_intr_lock; + +static void falconide_release_lock(void) +{ + if (falconide_intr_lock == 0) { + printk(KERN_ERR "%s: bug\n", __func__); + return; + } + falconide_intr_lock = 0; + stdma_release(); +} + +static void falconide_get_lock(irq_handler_t handler, void *data) +{ + if (falconide_intr_lock == 0) { + if (in_interrupt() > 0) + panic("Falcon IDE hasn't ST-DMA lock in interrupt"); + stdma_lock(handler, data); + falconide_intr_lock = 1; + } +} static void falconide_input_data(ide_drive_t *drive, struct request *rq, void *buf, unsigned int len) @@ -81,6 +100,8 @@ static const struct ide_tp_ops falconide_tp_ops = { }; static const struct ide_port_info falconide_port_info = { + .get_lock = falconide_get_lock, + .release_lock = falconide_release_lock, .tp_ops = &falconide_tp_ops, .host_flags = IDE_HFLAG_NO_DMA | IDE_HFLAG_SERIALIZE, }; @@ -132,9 +153,9 @@ static int __init falconide_init(void) goto err; } - ide_get_lock(NULL, NULL); + falconide_get_lock(NULL, NULL); rc = ide_host_register(host, &falconide_port_info, hws); - ide_release_lock(); + falconide_release_lock(); if (rc) goto err_free; |