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dmi: Let dmi_walk() users pass private data

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At the moment, dmi_walk() lacks flexibility, users can't pass data to
the callback function. Add a pointer for private data to make this
function more flexible.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Jean Delvare 2009-03-30 21:46:44 +02:00
parent ec19920944
commit e7a19c5624
5 changed files with 21 additions and 16 deletions
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18
drivers/firmware/dmi_scan.c
View File

@ -68,7 +68,8 @@ static char * __init dmi_string(const struct dmi_header *dm, u8 s)
* pointing to completely the wrong place for example * pointing to completely the wrong place for example
*/ */
static void dmi_table(u8 *buf, int len, int num, static void dmi_table(u8 *buf, int len, int num,
void (*decode)(const struct dmi_header *)) void (*decode)(const struct dmi_header *, void *),
void *private_data)
{ {
u8 *data = buf; u8 *data = buf;
int i = 0; int i = 0;
@ -89,7 +90,7 @@ static void dmi_table(u8 *buf, int len, int num,
while ((data - buf < len - 1) && (data[0] || data[1])) while ((data - buf < len - 1) && (data[0] || data[1]))
data++; data++;
if (data - buf < len - 1) if (data - buf < len - 1)
decode(dm); decode(dm, private_data);
data += 2; data += 2;
i++; i++;
} }
@ -99,7 +100,8 @@ static u32 dmi_base;
static u16 dmi_len; static u16 dmi_len;
static u16 dmi_num; static u16 dmi_num;
static int __init dmi_walk_early(void (*decode)(const struct dmi_header *)) static int __init dmi_walk_early(void (*decode)(const struct dmi_header *,
void *))
{ {
u8 *buf; u8 *buf;
@ -107,7 +109,7 @@ static int __init dmi_walk_early(void (*decode)(const struct dmi_header *))
if (buf == NULL) if (buf == NULL)
return -1; return -1;
dmi_table(buf, dmi_len, dmi_num, decode); dmi_table(buf, dmi_len, dmi_num, decode, NULL);
dmi_iounmap(buf, dmi_len); dmi_iounmap(buf, dmi_len);
return 0; return 0;
@ -295,7 +297,7 @@ static void __init dmi_save_extended_devices(const struct dmi_header *dm)
* and machine entries. For 2.5 we should pull the smbus controller info * and machine entries. For 2.5 we should pull the smbus controller info
* out of here. * out of here.
*/ */
static void __init dmi_decode(const struct dmi_header *dm) static void __init dmi_decode(const struct dmi_header *dm, void *dummy)
{ {
switch(dm->type) { switch(dm->type) {
case 0: /* BIOS Information */ case 0: /* BIOS Information */
@ -598,10 +600,12 @@ int dmi_get_year(int field)
/** /**
* dmi_walk - Walk the DMI table and get called back for every record * dmi_walk - Walk the DMI table and get called back for every record
* @decode: Callback function * @decode: Callback function
* @private_data: Private data to be passed to the callback function
* *
* Returns -1 when the DMI table can't be reached, 0 on success. * Returns -1 when the DMI table can't be reached, 0 on success.
*/ */
int dmi_walk(void (*decode)(const struct dmi_header *)) int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data)
{ {
u8 *buf; u8 *buf;
@ -612,7 +616,7 @@ int dmi_walk(void (*decode)(const struct dmi_header *))
if (buf == NULL) if (buf == NULL)
return -1; return -1;
dmi_table(buf, dmi_len, dmi_num, decode); dmi_table(buf, dmi_len, dmi_num, decode, private_data);
iounmap(buf); iounmap(buf);
return 0; return 0;

4
drivers/hwmon/fschmd.c
View File

@ -856,7 +856,7 @@ static struct file_operations watchdog_fops = {
/* DMI decode routine to read voltage scaling factors from special DMI tables, /* DMI decode routine to read voltage scaling factors from special DMI tables,
which are available on FSC machines with an fscher or later chip. */ which are available on FSC machines with an fscher or later chip. */
static void fschmd_dmi_decode(const struct dmi_header *header) static void fschmd_dmi_decode(const struct dmi_header *header, void *dummy)
{ {
int i, mult[3] = { 0 }, offset[3] = { 0 }, vref = 0, found = 0; int i, mult[3] = { 0 }, offset[3] = { 0 }, vref = 0, found = 0;
@ -991,7 +991,7 @@ static int fschmd_probe(struct i2c_client *client,
/* Read the special DMI table for fscher and newer chips */ /* Read the special DMI table for fscher and newer chips */
if ((kind == fscher || kind >= fschrc) && dmi_vref == -1) { if ((kind == fscher || kind >= fschrc) && dmi_vref == -1) {
dmi_walk(fschmd_dmi_decode); dmi_walk(fschmd_dmi_decode, NULL);
if (dmi_vref == -1) { if (dmi_vref == -1) {
dev_warn(&client->dev, dev_warn(&client->dev,
"Couldn't get voltage scaling factors from " "Couldn't get voltage scaling factors from "

4
drivers/platform/x86/dell-laptop.c
View File

@ -103,7 +103,7 @@ static void parse_da_table(const struct dmi_header *dm)
da_num_tokens += tokens; da_num_tokens += tokens;
} }
static void find_tokens(const struct dmi_header *dm) static void find_tokens(const struct dmi_header *dm, void *dummy)
{ {
switch (dm->type) { switch (dm->type) {
case 0xd4: /* Indexed IO */ case 0xd4: /* Indexed IO */
@ -356,7 +356,7 @@ static int __init dell_init(void)
if (!dmi_check_system(dell_device_table)) if (!dmi_check_system(dell_device_table))
return -ENODEV; return -ENODEV;
dmi_walk(find_tokens); dmi_walk(find_tokens, NULL);
if (!da_tokens) { if (!da_tokens) {
printk(KERN_INFO "dell-laptop: Unable to find dmi tokens\n"); printk(KERN_INFO "dell-laptop: Unable to find dmi tokens\n");

4
drivers/watchdog/hpwdt.c
View File

@ -380,7 +380,7 @@ asm(".text \n\t"
* This function checks whether or not a SMBIOS/DMI record is * This function checks whether or not a SMBIOS/DMI record is
* the 64bit CRU info or not * the 64bit CRU info or not
*/ */
static void __devinit dmi_find_cru(const struct dmi_header *dm) static void __devinit dmi_find_cru(const struct dmi_header *dm, void *dummy)
{ {
struct smbios_cru64_info *smbios_cru64_ptr; struct smbios_cru64_info *smbios_cru64_ptr;
unsigned long cru_physical_address; unsigned long cru_physical_address;
@ -403,7 +403,7 @@ static int __devinit detect_cru_service(void)
{ {
cru_rom_addr = NULL; cru_rom_addr = NULL;
dmi_walk(dmi_find_cru); dmi_walk(dmi_find_cru, NULL);
/* if cru_rom_addr has been set then we found a CRU service */ /* if cru_rom_addr has been set then we found a CRU service */
return ((cru_rom_addr != NULL) ? 0 : -ENODEV); return ((cru_rom_addr != NULL) ? 0 : -ENODEV);

7
include/linux/dmi.h
View File

@ -47,7 +47,8 @@ extern int dmi_get_year(int field);
extern int dmi_name_in_vendors(const char *str); extern int dmi_name_in_vendors(const char *str);
extern int dmi_name_in_serial(const char *str); extern int dmi_name_in_serial(const char *str);
extern int dmi_available; extern int dmi_available;
extern int dmi_walk(void (*decode)(const struct dmi_header *)); extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data);
extern bool dmi_match(enum dmi_field f, const char *str); extern bool dmi_match(enum dmi_field f, const char *str);
#else #else
@ -61,8 +62,8 @@ static inline int dmi_get_year(int year) { return 0; }
static inline int dmi_name_in_vendors(const char *s) { return 0; } static inline int dmi_name_in_vendors(const char *s) { return 0; }
static inline int dmi_name_in_serial(const char *s) { return 0; } static inline int dmi_name_in_serial(const char *s) { return 0; }
#define dmi_available 0 #define dmi_available 0
static inline int dmi_walk(void (*decode)(const struct dmi_header *)) static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
{ return -1; } void *private_data) { return -1; }
static inline bool dmi_match(enum dmi_field f, const char *str) static inline bool dmi_match(enum dmi_field f, const char *str)
{ return false; } { return false; }
static inline const struct dmi_system_id * static inline const struct dmi_system_id *