| Message ID | 20241102004722.124772-1-gye976@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v3] drm/xe: Fix build error for XE_IOCTL_DBG macro | expand |
diff --git a/drivers/gpu/drm/xe/xe_macros.h b/drivers/gpu/drm/xe/xe_macros.h index daf56c846d03..b956acbe4000 100644 --- a/drivers/gpu/drm/xe/xe_macros.h +++ b/drivers/gpu/drm/xe/xe_macros.h @@ -10,9 +10,11 @@ #define XE_WARN_ON WARN_ON -#define XE_IOCTL_DBG(xe, cond) \ - ((cond) && (drm_dbg(&(xe)->drm, \ - "Ioctl argument check failed at %s:%d: %s", \ - __FILE__, __LINE__, #cond), 1)) - -#endif +#define XE_IOCTL_DBG(xe, cond) ({ \ + int cond__ = !!(cond); \ + if (cond__) \ + drm_dbg(&(xe)->drm, \ + "Ioctl argument check failed at %s:%d: %s", \ + __FILE__, __LINE__, #cond); \ + cond__; \ +})
if CONFIG_DRM_USE_DYNAMIC_DEBUG is set, 'drm_dbg' function is replaced with '__dynamic_func_call_cls', which is replaced with a do while statement. so in the previous code, there are the following build errors. include/linux/dynamic_debug.h:221:58: error: expected expression before ‘do’ 221 | #define __dynamic_func_call_cls(id, cls, fmt, func, ...) do { \ | ^~ include/linux/dynamic_debug.h:248:9: note: in expansion of macro ‘__dynamic_func_call_cls’ 248 | __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~~ include/drm/drm_print.h:425:9: note: in expansion of macro ‘_dynamic_func_call_cls’ 425 | _dynamic_func_call_cls(cat, fmt, __drm_dev_dbg, \ | ^~~~~~~~~~~~~~~~~~~~~~ include/drm/drm_print.h:504:9: note: in expansion of macro ‘drm_dev_dbg’ 504 | drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) | ^~~~~~~~~~~ include/drm/drm_print.h:522:33: note: in expansion of macro ‘drm_dbg_driver’ 522 | #define drm_dbg(drm, fmt, ...) drm_dbg_driver(drm, fmt, ##__VA_ARGS__) | ^~~~~~~~~~~~~~ drivers/gpu/drm/xe/xe_macros.h:14:21: note: in expansion of macro ‘drm_dbg’ 14 | ((cond) && (drm_dbg(&(xe)->drm, \ | ^~~~~~~ drivers/gpu/drm/xe/xe_bo.c:2029:13: note: in expansion of macro ‘XE_IOCTL_DBG’ 2029 | if (XE_IOCTL_DBG(xe, !gem_obj)) the problem is that, XE_IOCTL_DBG uses this function for conditional expr. so I fix the expr to be compatible with the do while statement, by referring to "https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html". v2: I modified this to print when only cond is true. v3: Modify to evaluate cond only once. Signed-off-by: Gyeyoung Baek <gye976@gmail.com> --- drivers/gpu/drm/xe/xe_macros.h | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)