From c7b87f3d5037a35b5c7bb916ffc826be3fcb208d Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 10 May 2007 16:46:13 +0100 Subject: [PATCH] [ARM] ecard: add helper function for setting ecard irq ops Rather than having every driver fiddle about setting its private IRQ operations and data, provide a helper function to contain this functionality in one place. Arrange to remove the driver-private IRQ operations and data when the device is removed from the driver, and remove the driver private code to do this. This fixes potential problems caused by drivers forgetting to remove these hooks. Signed-off-by: Russell King --- arch/arm/kernel/ecard.c | 16 ++++++++++++++++ drivers/ata/pata_icside.c | 13 ++++--------- drivers/ide/arm/icside.c | 9 +++------ drivers/net/arm/etherh.c | 4 +--- drivers/scsi/arm/cumana_2.c | 4 ++-- drivers/scsi/arm/eesox.c | 4 ++-- drivers/scsi/arm/powertec.c | 4 ++-- include/asm-arm/ecard.h | 4 +++- 8 files changed, 33 insertions(+), 25 deletions(-) diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c index bdbd7da992866..65f1398723a4e 100644 --- a/arch/arm/kernel/ecard.c +++ b/arch/arm/kernel/ecard.c @@ -958,6 +958,14 @@ void ecard_release_resources(struct expansion_card *ec) } EXPORT_SYMBOL(ecard_release_resources); +void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data) +{ + ec->irq_data = irq_data; + barrier(); + ec->ops = ops; +} +EXPORT_SYMBOL(ecard_setirq); + /* * Probe for an expansion card. * @@ -1133,6 +1141,14 @@ static int ecard_drv_remove(struct device *dev) drv->remove(ec); ecard_release(ec); + /* + * Restore the default operations. We ensure that the + * ops are set before we change the data. + */ + ec->ops = &ecard_default_ops; + barrier(); + ec->irq_data = NULL; + return 0; } diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c index dbc8ee2adcf04..d7621a39ed091 100644 --- a/drivers/ata/pata_icside.c +++ b/drivers/ata/pata_icside.c @@ -434,8 +434,8 @@ pata_icside_register_v5(struct ata_probe_ent *ae, struct expansion_card *ec) ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT; ec->irqmask = 1; - ec->irq_data = state; - ec->ops = &pata_icside_ops_arcin_v5; + + ecard_setirq(ec, &pata_icside_ops_arcin_v5, state); /* * Be on the safe side - disable interrupts @@ -480,8 +480,7 @@ pata_icside_register_v6(struct ata_probe_ent *ae, struct expansion_card *ec) writeb(sel, ioc_base); - ec->irq_data = state; - ec->ops = &pata_icside_ops_arcin_v6; + ecard_setirq(ec, &pata_icside_ops_arcin_v6, state); state->irq_port = easi_base; state->ioc_base = ioc_base; @@ -609,8 +608,7 @@ static void pata_icside_shutdown(struct expansion_card *ec) * this register via that region. */ local_irq_save(flags); - if (ec->ops) - ec->ops->irqdisable(ec, ec->irq); + ec->ops->irqdisable(ec, ec->irq); local_irq_restore(flags); /* @@ -638,9 +636,6 @@ static void __devexit pata_icside_remove(struct expansion_card *ec) * don't NULL out the drvdata - devres/libata wants it * to free the ata_host structure. */ - ec->ops = NULL; - ec->irq_data = NULL; - if (state->dma != NO_DMA) free_dma(state->dma); if (state->ioc_base) diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c index 1fe0457243dbb..69c949ea93e37 100644 --- a/drivers/ide/arm/icside.c +++ b/drivers/ide/arm/icside.c @@ -574,8 +574,8 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec) ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT; ec->irqmask = 1; - ec->irq_data = state; - ec->ops = &icside_ops_arcin_v5; + + ecard_setirq(ec, &icside_ops_arcin_v5, state); /* * Be on the safe side - disable interrupts @@ -630,8 +630,7 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec) writeb(sel, ioc_base); - ec->irq_data = state; - ec->ops = &icside_ops_arcin_v6; + ecard_setirq(ec, &icside_ops_arcin_v6, state); state->irq_port = easi_base; state->ioc_base = ioc_base; @@ -793,8 +792,6 @@ static void __devexit icside_remove(struct expansion_card *ec) } ecard_set_drvdata(ec, NULL); - ec->ops = NULL; - ec->irq_data = NULL; if (state->ioc_base) iounmap(state->ioc_base); diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c index 61f574aa3a991..387f1e3a4e84e 100644 --- a/drivers/net/arm/etherh.c +++ b/drivers/net/arm/etherh.c @@ -710,8 +710,7 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id) * IRQ and control port handling - only for non-NIC slot cards. */ if (ec->slot_no != 8) { - ec->ops = ðerh_ops; - ec->irq_data = eh; + ecard_setirq(ec, ðerh_ops, eh); } else { /* * If we're in the NIC slot, make sure the IRQ is enabled @@ -778,7 +777,6 @@ static void __devexit etherh_remove(struct expansion_card *ec) ecard_set_drvdata(ec, NULL); unregister_netdev(dev); - ec->ops = NULL; if (eh->ioc_fast) iounmap(eh->ioc_fast); diff --git a/drivers/scsi/arm/cumana_2.c b/drivers/scsi/arm/cumana_2.c index 82add77ad1316..f51aa3446bc7c 100644 --- a/drivers/scsi/arm/cumana_2.c +++ b/drivers/scsi/arm/cumana_2.c @@ -450,8 +450,8 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id) ec->irqaddr = info->base + CUMANASCSI2_STATUS; ec->irqmask = STATUS_INT; - ec->irq_data = info; - ec->ops = &cumanascsi_2_ops; + + ecard_setirq(ec, &cumanascsi_2_ops, info); ret = fas216_init(host); if (ret) diff --git a/drivers/scsi/arm/eesox.c b/drivers/scsi/arm/eesox.c index ed06a8c19ad64..cc5d513aa99af 100644 --- a/drivers/scsi/arm/eesox.c +++ b/drivers/scsi/arm/eesox.c @@ -569,8 +569,8 @@ eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id) ec->irqaddr = base + EESOX_DMASTAT; ec->irqmask = EESOX_STAT_INTR; - ec->irq_data = info; - ec->ops = &eesoxscsi_ops; + + ecard_setirq(ec, &eesoxscsi_ops, info); device_create_file(&ec->dev, &dev_attr_bus_term); diff --git a/drivers/scsi/arm/powertec.c b/drivers/scsi/arm/powertec.c index 159047a34997e..3cbd525b58c5a 100644 --- a/drivers/scsi/arm/powertec.c +++ b/drivers/scsi/arm/powertec.c @@ -361,8 +361,8 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id) ec->irqaddr = base + POWERTEC_INTR_STATUS; ec->irqmask = POWERTEC_INTR_BIT; - ec->irq_data = info; - ec->ops = &powertecscsi_ops; + + ecard_setirq(ec, &powertecscsi_ops, info); device_create_file(&ec->dev, &dev_attr_bus_term); diff --git a/include/asm-arm/ecard.h b/include/asm-arm/ecard.h index 3a6d3eb276225..8f1000eac91fd 100644 --- a/include/asm-arm/ecard.h +++ b/include/asm-arm/ecard.h @@ -121,7 +121,7 @@ struct in_ecid { /* Packed card ID information */ typedef struct expansion_card ecard_t; typedef unsigned long *loader_t; -typedef struct { /* Card handler routines */ +typedef struct expansion_card_ops { /* Card handler routines */ void (*irqenable)(ecard_t *ec, int irqnr); void (*irqdisable)(ecard_t *ec, int irqnr); int (*irqpending)(ecard_t *ec); @@ -179,6 +179,8 @@ struct expansion_card { u64 dma_mask; }; +void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data); + struct in_chunk_dir { unsigned int start_offset; union { -- 2.30.2