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drm/print: Add drm_err_printer()

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A simple convienence function that returns a drm_printer which prints
using pr_err()

Changes since v1:
* Make __drm_printfn_err() more consistent with DRM_ERROR() - danvet

Cc: Juston Li <juston.li@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Harry Wentland <hwentlan@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190903204645.25487-6-lyude@redhat.com
This commit is contained in:
Lyude Paul 2019-09-03 16:45:43 -04:00
parent 7cbce45d62
commit 0de54fb2d0
2 changed files with 23 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/gpu/drm/drm_print.c
View file

@ -147,6 +147,12 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf)
}
EXPORT_SYMBOL(__drm_printfn_debug);
void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf)
{
pr_err("*ERROR* %s %pV", p->prefix, vaf);
}
EXPORT_SYMBOL(__drm_printfn_err);
/**
* drm_puts - print a const string to a &drm_printer stream
* @p: the &drm printer

17
include/drm/drm_print.h
View file

@ -83,6 +83,7 @@ void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
void __drm_puts_seq_file(struct drm_printer *p, const char *str);
void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf);
__printf(2, 3)
void drm_printf(struct drm_printer *p, const char *f, ...);
@ -227,6 +228,22 @@ static inline struct drm_printer drm_debug_printer(const char *prefix)
return p;
}
/**
* drm_err_printer - construct a &drm_printer that outputs to pr_err()
* @prefix: debug output prefix
*
* RETURNS:
* The &drm_printer object
*/
static inline struct drm_printer drm_err_printer(const char *prefix)
{
struct drm_printer p = {
.printfn = __drm_printfn_err,
.prefix = prefix
};
return p;
}
/*
* The following categories are defined:
*