Let's be user-friendly and print an actually helpful parameter description.
Signed-off-by: Ezequiel Garcia ezequiel@vanguardiasur.com.ar --- drivers/gpu/drm/drm_drv.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 167c8d3d4a31..49b658069b51 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -37,15 +37,24 @@ #include "drm_legacy.h" #include "drm_internal.h"
-unsigned int drm_debug = 0; /* bitmask of DRM_UT_x */ +/* + * drm_debug: Enable debug output. + * Bitmask of DRM_UT_x. See include/drm/drmP.h for details. + */ +unsigned int drm_debug = 0; EXPORT_SYMBOL(drm_debug);
MODULE_AUTHOR(CORE_AUTHOR); MODULE_DESCRIPTION(CORE_DESC); MODULE_LICENSE("GPL and additional rights"); -MODULE_PARM_DESC(debug, "Enable debug output"); +MODULE_PARM_DESC(debug, "Enables debug output, where each bit enables a debug category.\n" +"Bit 0 (0x1) will enable CORE messages (drm core code)\n" +"Bit 1 (0x2) will enable DRIVER messages (drm controller code)\n" +"Bit 2 (0x4) will enable KMS messages (modesetting code)\n" +"Bit 3 (0x8) will enable PRMIE messages (prime code)\n"); module_param_named(debug, drm_debug, int, 0600);
+ static DEFINE_SPINLOCK(drm_minor_lock); static struct idr drm_minors_idr;