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authorTejun Heo <htejun@gmail.com>2007-01-20 16:00:28 +0900
committerJeff Garzik <jeff@garzik.org>2007-02-09 17:39:37 -0500
commit24dc5f33ea4b504cfbd23fa159a4cacba8e4d800 (patch)
treed76de456157f555c9a65b83f426fd805fee1e846 /drivers/ata/pata_legacy.c
parentf0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b (diff)
downloadop-kernel-dev-24dc5f33ea4b504cfbd23fa159a4cacba8e4d800.zip
op-kernel-dev-24dc5f33ea4b504cfbd23fa159a4cacba8e4d800.tar.gz
libata: update libata LLDs to use devres
Update libata LLDs to use devres. Core layer is already converted to support managed LLDs. This patch simplifies initialization and fixes many resource related bugs in init failure and detach path. For example, all converted drivers now handle ata_device_add() failure gracefully without excessive resource rollback code. As most resources are released automatically on driver detach, many drivers don't need or can do with much simpler ->{port|host}_stop(). In general, stop callbacks are need iff port or host needs to be given commands to shut it down. Note that freezing is enough in many cases and ports are automatically frozen before being detached. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_legacy.c')
-rw-r--r--drivers/ata/pata_legacy.c51
1 files changed, 13 insertions, 38 deletions
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 581cb33..9532b9b 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -170,8 +170,6 @@ static struct ata_port_operations simple_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
static struct ata_port_operations legacy_port_ops = {
@@ -195,8 +193,6 @@ static struct ata_port_operations legacy_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
/*
@@ -305,8 +301,6 @@ static struct ata_port_operations pdc20230_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
/*
@@ -357,8 +351,6 @@ static struct ata_port_operations ht6560a_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
/*
@@ -420,8 +412,6 @@ static struct ata_port_operations ht6560b_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
/*
@@ -538,8 +528,6 @@ static struct ata_port_operations opti82c611a_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
/*
@@ -668,8 +656,6 @@ static struct ata_port_operations opti82c46x_port_ops = {
.irq_clear = ata_bmdma_irq_clear,
.port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop
};
@@ -689,21 +675,19 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl
struct legacy_data *ld = &legacy_data[nr_legacy_host];
struct ata_probe_ent ae;
struct platform_device *pdev;
- int ret = -EBUSY;
struct ata_port_operations *ops = &legacy_port_ops;
int pio_modes = pio_mask;
u32 mask = (1 << port);
-
- if (request_region(io, 8, "pata_legacy") == NULL)
- return -EBUSY;
- if (request_region(ctrl, 1, "pata_legacy") == NULL)
- goto fail_io;
+ int ret;
pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0);
- if (IS_ERR(pdev)) {
- ret = PTR_ERR(pdev);
- goto fail_dev;
- }
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ ret = -EBUSY;
+ if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
+ devm_request_region(&pdev->dev, ctrl, 1, "pata_legacy") == NULL)
+ goto fail;
if (ht6560a & mask) {
ops = &ht6560a_port_ops;
@@ -776,21 +760,16 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl
ata_std_ports(&ae.port[0]);
ae.private_data = ld;
- ret = ata_device_add(&ae);
- if (ret == 0) {
- ret = -ENODEV;
+ ret = -ENODEV;
+ if (!ata_device_add(&ae))
goto fail;
- }
+
legacy_host[nr_legacy_host++] = dev_get_drvdata(&pdev->dev);
ld->platform_dev = pdev;
return 0;
fail:
platform_device_unregister(pdev);
-fail_dev:
- release_region(ctrl, 1);
-fail_io:
- release_region(io, 8);
return ret;
}
@@ -923,15 +902,11 @@ static __exit void legacy_exit(void)
for (i = 0; i < nr_legacy_host; i++) {
struct legacy_data *ld = &legacy_data[i];
- struct ata_port *ap =legacy_host[i]->ports[0];
- unsigned long io = ap->ioaddr.cmd_addr;
- unsigned long ctrl = ap->ioaddr.ctl_addr;
- ata_host_remove(legacy_host[i]);
+
+ ata_host_detach(legacy_host[i]);
platform_device_unregister(ld->platform_dev);
if (ld->timing)
release_region(ld->timing, 2);
- release_region(io, 8);
- release_region(ctrl, 1);
}
}
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