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authorMing Lei <tom.leiming@gmail.com>2009-02-06 18:40:12 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-25 02:38:25 +0300
commit7a192ec334cab9fafe3a8665a65af398b0e24730 (patch)
treeeea572863500f94d446cfded69835e188dba3447 /drivers/scsi/a4000t.c
parent6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff)
downloadlinux-7a192ec334cab9fafe3a8665a65af398b0e24730.tar.xz
platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver'
This patch fixes the bug reported in http://bugzilla.kernel.org/show_bug.cgi?id=11681. "Lots of device drivers register a 'struct device_driver' with the '.bus' member set to '&platform_bus_type'. This is wrong, since the platform_bus functions expect the 'struct device_driver' to be wrapped up in a 'struct platform_driver' which provides some additional callbacks (like suspend_late, resume_early). The effect may be that platform_suspend_late() uses bogus data outside the device_driver struct as a pointer pointer to the device driver's suspend_late() function or other hard to reproduce failures."(Lothar Wassmann) Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/scsi/a4000t.c')
-rw-r--r--drivers/scsi/a4000t.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/scsi/a4000t.c b/drivers/scsi/a4000t.c
index d4bda2017746..6d25aca7b412 100644
--- a/drivers/scsi/a4000t.c
+++ b/drivers/scsi/a4000t.c
@@ -35,7 +35,7 @@ static struct platform_device *a4000t_scsi_device;
#define A4000T_SCSI_ADDR 0xdd0040
-static int __devinit a4000t_probe(struct device *dev)
+static int __devinit a4000t_probe(struct platform_device *dev)
{
struct Scsi_Host *host;
struct NCR_700_Host_Parameters *hostdata;
@@ -78,7 +78,7 @@ static int __devinit a4000t_probe(struct device *dev)
goto out_put_host;
}
- dev_set_drvdata(dev, host);
+ platform_set_drvdata(dev, host);
scsi_scan_host(host);
return 0;
@@ -93,9 +93,9 @@ static int __devinit a4000t_probe(struct device *dev)
return -ENODEV;
}
-static __devexit int a4000t_device_remove(struct device *dev)
+static __devexit int a4000t_device_remove(struct platform_device *dev)
{
- struct Scsi_Host *host = dev_get_drvdata(dev);
+ struct Scsi_Host *host = platform_get_drvdata(dev);
struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
scsi_remove_host(host);
@@ -108,25 +108,27 @@ static __devexit int a4000t_device_remove(struct device *dev)
return 0;
}
-static struct device_driver a4000t_scsi_driver = {
- .name = "a4000t-scsi",
- .bus = &platform_bus_type,
- .probe = a4000t_probe,
- .remove = __devexit_p(a4000t_device_remove),
+static struct platform_driver a4000t_scsi_driver = {
+ .driver = {
+ .name = "a4000t-scsi",
+ .owner = THIS_MODULE,
+ },
+ .probe = a4000t_probe,
+ .remove = __devexit_p(a4000t_device_remove),
};
static int __init a4000t_scsi_init(void)
{
int err;
- err = driver_register(&a4000t_scsi_driver);
+ err = platform_driver_register(&a4000t_scsi_driver);
if (err)
return err;
a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
-1, NULL, 0);
if (IS_ERR(a4000t_scsi_device)) {
- driver_unregister(&a4000t_scsi_driver);
+ platform_driver_register(&a4000t_scsi_driver);
return PTR_ERR(a4000t_scsi_device);
}
@@ -136,7 +138,7 @@ static int __init a4000t_scsi_init(void)
static void __exit a4000t_scsi_exit(void)
{
platform_device_unregister(a4000t_scsi_device);
- driver_unregister(&a4000t_scsi_driver);
+ platform_driver_unregister(&a4000t_scsi_driver);
}
module_init(a4000t_scsi_init);