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Commit c6fe3db5 authored by Matt Domsch's avatar Matt Domsch
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EDD: moved attr_test to edd_attribute ->test(), comments

parent df6b5e3e
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Showing with 37 additions and 48 deletions
arch/i386/kernel/edd.c
View file @ c6fe3db5
...@@ -26,9 +26,6 @@ ...@@ -26,9 +26,6 @@
/* /*
* Known issues: * Known issues:
* - module unload leaves directories around if a symlink was
* created in that directory. Confirmed is a driverfs bug, not
* ours. Seen on kernel 2.5.41.
* - refcounting of struct device objects could be improved. * - refcounting of struct device objects could be improved.
* *
* TODO: * TODO:
...@@ -60,7 +57,7 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>"); ...@@ -60,7 +57,7 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
MODULE_DESCRIPTION("driverfs interface to BIOS EDD information"); MODULE_DESCRIPTION("driverfs interface to BIOS EDD information");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
#define EDD_VERSION "0.06 2002-Oct-09" #define EDD_VERSION "0.07 2002-Oct-24"
#define EDD_DEVICE_NAME_SIZE 16 #define EDD_DEVICE_NAME_SIZE 16
#define REPORT_URL "http://domsch.com/linux/edd30/results.html" #define REPORT_URL "http://domsch.com/linux/edd30/results.html"
...@@ -86,6 +83,7 @@ struct edd_attribute { ...@@ -86,6 +83,7 @@ struct edd_attribute {
struct attribute attr; struct attribute attr;
ssize_t(*show) (struct edd_device * edev, char *buf, size_t count, ssize_t(*show) (struct edd_device * edev, char *buf, size_t count,
loff_t off); loff_t off);
int (*test) (struct edd_device * edev);
}; };
/* forward declarations */ /* forward declarations */
...@@ -95,10 +93,11 @@ static struct scsi_device *edd_find_matching_scsi_device(struct edd_device *edev ...@@ -95,10 +93,11 @@ static struct scsi_device *edd_find_matching_scsi_device(struct edd_device *edev
static struct edd_device *edd_devices[EDDMAXNR]; static struct edd_device *edd_devices[EDDMAXNR];
#define EDD_DEVICE_ATTR(_name,_mode,_show) \ #define EDD_DEVICE_ATTR(_name,_mode,_show,_test) \
struct edd_attribute edd_attr_##_name = { \ struct edd_attribute edd_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \ .attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \ .show = _show, \
.test = _test, \
}; };
static inline struct edd_info * static inline struct edd_info *
...@@ -505,17 +504,6 @@ edd_show_sectors(struct edd_device *edev, char *buf, size_t count, loff_t off) ...@@ -505,17 +504,6 @@ edd_show_sectors(struct edd_device *edev, char *buf, size_t count, loff_t off)
return (p - buf); return (p - buf);
} }
static EDD_DEVICE_ATTR(raw_data, 0444, edd_show_raw_data);
static EDD_DEVICE_ATTR(version, 0444, edd_show_version);
static EDD_DEVICE_ATTR(extensions, 0444, edd_show_extensions);
static EDD_DEVICE_ATTR(info_flags, 0444, edd_show_info_flags);
static EDD_DEVICE_ATTR(default_cylinders, 0444, edd_show_default_cylinders);
static EDD_DEVICE_ATTR(default_heads, 0444, edd_show_default_heads);
static EDD_DEVICE_ATTR(default_sectors_per_track, 0444,
edd_show_default_sectors_per_track);
static EDD_DEVICE_ATTR(sectors, 0444, edd_show_sectors);
static EDD_DEVICE_ATTR(interface, 0444, edd_show_interface);
static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus);
/* /*
* Some device instances may not have all the above attributes, * Some device instances may not have all the above attributes,
...@@ -525,16 +513,7 @@ static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus); ...@@ -525,16 +513,7 @@ static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus);
* if the default_{cylinders,heads,sectors_per_track} values * if the default_{cylinders,heads,sectors_per_track} values
* are zero, the BIOS doesn't provide sane values, don't bother * are zero, the BIOS doesn't provide sane values, don't bother
* creating files for them either. * creating files for them either.
*
* struct attr_test pairs an attribute and a test,
* (the default NULL test being true - the attribute exists)
* and individual existence tests may be written for each
* attribute.
*/ */
struct attr_test {
struct edd_attribute *attr;
int (*test) (struct edd_device * edev);
};
static int static int
edd_has_default_cylinders(struct edd_device *edev) edd_has_default_cylinders(struct edd_device *edev)
...@@ -591,23 +570,34 @@ edd_has_edd30(struct edd_device *edev) ...@@ -591,23 +570,34 @@ edd_has_edd30(struct edd_device *edev)
return 0; return 0;
} }
static struct attr_test def_attrs[] = { static EDD_DEVICE_ATTR(raw_data, 0444, edd_show_raw_data, NULL);
{.attr = &edd_attr_raw_data}, static EDD_DEVICE_ATTR(version, 0444, edd_show_version, NULL);
{.attr = &edd_attr_version}, static EDD_DEVICE_ATTR(extensions, 0444, edd_show_extensions, NULL);
{.attr = &edd_attr_extensions}, static EDD_DEVICE_ATTR(info_flags, 0444, edd_show_info_flags, NULL);
{.attr = &edd_attr_info_flags}, static EDD_DEVICE_ATTR(sectors, 0444, edd_show_sectors, NULL);
{.attr = &edd_attr_sectors}, static EDD_DEVICE_ATTR(default_cylinders, 0444, edd_show_default_cylinders,
{.attr = &edd_attr_default_cylinders, edd_has_default_cylinders);
.test = &edd_has_default_cylinders}, static EDD_DEVICE_ATTR(default_heads, 0444, edd_show_default_heads,
{.attr = &edd_attr_default_heads, edd_has_default_heads);
.test = &edd_has_default_heads}, static EDD_DEVICE_ATTR(default_sectors_per_track, 0444,
{.attr = &edd_attr_default_sectors_per_track, edd_show_default_sectors_per_track,
.test = &edd_has_default_sectors_per_track}, edd_has_default_sectors_per_track);
{.attr = &edd_attr_interface, static EDD_DEVICE_ATTR(interface, 0444, edd_show_interface, edd_has_edd30);
.test = &edd_has_edd30}, static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus, edd_has_edd30);
{.attr = &edd_attr_host_bus,
.test = &edd_has_edd30},
{.attr = NULL,.test = NULL}, static struct edd_attribute * def_attrs[] = {
&edd_attr_raw_data,
&edd_attr_version,
&edd_attr_extensions,
&edd_attr_info_flags,
&edd_attr_sectors,
&edd_attr_default_cylinders,
&edd_attr_default_heads,
&edd_attr_default_sectors_per_track,
&edd_attr_interface,
&edd_attr_host_bus,
NULL,
}; };
/* edd_get_devpath_length(), edd_fill_devpath(), and edd_device_link() /* edd_get_devpath_length(), edd_fill_devpath(), and edd_device_link()
...@@ -864,14 +854,13 @@ edd_device_unregister(struct edd_device *edev) ...@@ -864,14 +854,13 @@ edd_device_unregister(struct edd_device *edev)
static int static int
edd_populate_dir(struct edd_device *edev) edd_populate_dir(struct edd_device *edev)
{ {
struct attr_test *s; struct edd_attribute *attr;
int i; int i;
int error = 0; int error = 0;
for (i = 0; def_attrs[i].attr; i++) { for (i = 0; (attr=def_attrs[i]); i++) {
s = &def_attrs[i]; if (!attr->test || (attr->test && !attr->test(edev))) {
if (!s->test || (s->test && !s->test(edev))) { if ((error = edd_create_file(edev, attr))) {
if ((error = edd_create_file(edev, s->attr))) {
break; break;
} }
} }
...@@ -926,7 +915,7 @@ static int __init ...@@ -926,7 +915,7 @@ static int __init
edd_init(void) edd_init(void)
{ {
unsigned int i; unsigned int i;
int rc; int rc=0;
struct edd_device *edev; struct edd_device *edev;
printk(KERN_INFO "BIOS EDD facility v%s, %d devices found\n", printk(KERN_INFO "BIOS EDD facility v%s, %d devices found\n",
......
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