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firmware: dmi_scan: Make dmi_walk and dmi_walk_early return real error codes

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Currently they return -1 on error, which will confuse callers if
they try to interpret it as a normal negative error code.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
This commit is contained in:
Andy Lutomirski 2017-06-15 13:46:00 +02:00 committed by Jean Delvare
parent c9aba14362
commit c926820085
2 changed files with 6 additions and 5 deletions
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9
drivers/firmware/dmi_scan.c
View File

@ -144,7 +144,7 @@ static int __init dmi_walk_early(void (*decode)(const struct dmi_header *,
buf = dmi_early_remap(dmi_base, orig_dmi_len);
if (buf == NULL)
return -1;
return -ENOMEM;
dmi_decode_table(buf, decode, NULL);
@ -1008,7 +1008,8 @@ EXPORT_SYMBOL(dmi_get_date);
* @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 0 on success, -ENXIO if DMI is not selected or not present,
* or a different negative error code if DMI walking fails.
*/
int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data)
@ -1016,11 +1017,11 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *),
u8 *buf;
if (!dmi_available)
return -1;
return -ENXIO;
buf = dmi_remap(dmi_base, dmi_len);
if (buf == NULL)
return -1;
return -ENOMEM;
dmi_decode_table(buf, decode, private_data);

2
include/linux/dmi.h
View File

@ -136,7 +136,7 @@ static inline int dmi_name_in_vendors(const char *s) { return 0; }
static inline int dmi_name_in_serial(const char *s) { return 0; }
#define dmi_available 0
static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data) { return -1; }
void *private_data) { return -ENXIO; }
static inline bool dmi_match(enum dmi_field f, const char *str)
{ return false; }
static inline void dmi_memdev_name(u16 handle, const char **bank,