Messages in this thread | | | Date | Tue, 6 Jun 2017 16:52:29 +0200 | From | Jean Delvare <> | Subject | Re: [PATCH v2] dmi: Make dmi_walk and dmi_walk_early return real error codes |
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On Sat, 3 Jun 2017 11:05:00 -0700, Andy Lutomirski wrote: > 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> > Cc: Jean Delvare <jdelvare@suse.com> > Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org> > --- > since v1: Use ENXIO instead of ENOENT in the !dmi_available condition > > drivers/firmware/dmi_scan.c | 9 +++++---- > include/linux/dmi.h | 2 +- > 2 files changed, 6 insertions(+), 5 deletions(-) > > diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c > index 54be60e..cfe0d9d 100644 > --- a/drivers/firmware/dmi_scan.c > +++ b/drivers/firmware/dmi_scan.c > @@ -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); > > @@ -992,7 +992,8 @@ 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) > @@ -1000,11 +1001,11 @@ 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); > > diff --git a/include/linux/dmi.h b/include/linux/dmi.h > index 5e9c74c..9bbf21a 100644 > --- a/include/linux/dmi.h > +++ b/include/linux/dmi.h > @@ -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,
Applied, thanks.
-- Jean Delvare SUSE L3 Support
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