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SubjectRe: [PATCH 2/2] drm: Verify debug message arguments
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On 04/17/2011 08:35 PM, Joe Perches wrote:
> Add __attribute__((format (printf, 4, 5))) to drm_ut_debug_printk
> and fix fallout.
>
> Signed-off-by: Joe Perches <joe@perches.com>

Aside from the comment below about intel_bios.c,

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

especially the changes in intel_display.c. yikes...

> ---
> drivers/gpu/drm/drm_irq.c | 9 +++++----
> drivers/gpu/drm/i915/intel_bios.c | 6 +++---
> drivers/gpu/drm/i915/intel_display.c | 8 ++++----
> drivers/gpu/drm/radeon/radeon_display.c | 5 +++--
> include/drm/drmP.h | 3 ++-
> 5 files changed, 17 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index 741457b..62ced75 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -684,10 +684,11 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
> */
> *vblank_time = ns_to_timeval(timeval_to_ns(&raw_time) - delta_ns);
>
> - DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %d.%d -> %d.%d [e %d us, %d rep]\n",
> - crtc, (int) vbl_status, hpos, vpos, raw_time.tv_sec,
> - raw_time.tv_usec, vblank_time->tv_sec, vblank_time->tv_usec,
> - (int) duration_ns/1000, i);
> + DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %ld.%ld -> %ld.%ld [e %d us, %d rep]\n",
> + crtc, (int)vbl_status, hpos, vpos,
> + (long)raw_time.tv_sec, (long)raw_time.tv_usec,
> + (long)vblank_time->tv_sec, (long)vblank_time->tv_usec,
> + (int)duration_ns/1000, i);
>
> vbl_status = DRM_VBLANKTIME_SCANOUTPOS_METHOD;
> if (invbl)
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index fb5b4d4..927442a 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
> i915_lvds_downclock) {
> dev_priv->lvds_downclock_avail = 1;
> dev_priv->lvds_downclock = temp_downclock;
> - DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
> - "Normal Clock %dKHz, downclock %dKHz\n",
> - temp_downclock, panel_fixed_mode->clock);
> + DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
> + "Normal Clock %dKHz, downclock %dKHz\n",
> + temp_downclock, panel_fixed_mode->clock);
> }
> return;
> }

Does this hunk only change white space, or am I missing something?

> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 432fc04..63bc2af 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -3497,11 +3497,11 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
> 1000;
> entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
>
> - DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
> + DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
>
> wm_size = fifo_size - (entries_required + wm->guard_size);
>
> - DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
> + DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
>
> /* Don't promote wm_size to unsigned... */
> if (wm_size > (long)wm->max_wm)
> @@ -3820,13 +3820,13 @@ static bool g4x_check_srwm(struct drm_device *dev,
> display_wm, cursor_wm);
>
> if (display_wm > display->max_wm) {
> - DRM_DEBUG_KMS("display watermark is too large(%d), disabling\n",
> + DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
> display_wm, display->max_wm);
> return false;
> }
>
> if (cursor_wm > cursor->max_wm) {
> - DRM_DEBUG_KMS("cursor watermark is too large(%d), disabling\n",
> + DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
> cursor_wm, cursor->max_wm);
> return false;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
> index bdbab5c..0671934 100644
> --- a/drivers/gpu/drm/radeon/radeon_display.c
> +++ b/drivers/gpu/drm/radeon/radeon_display.c
> @@ -1087,8 +1087,9 @@ void radeon_compute_pll_legacy(struct radeon_pll *pll,
> *frac_fb_div_p = best_frac_feedback_div;
> *ref_div_p = best_ref_div;
> *post_div_p = best_post_div;
> - DRM_DEBUG_KMS("%d %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
> - freq, best_freq / 1000, best_feedback_div, best_frac_feedback_div,
> + DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
> + (long long)freq,
> + best_freq / 1000, best_feedback_div, best_frac_feedback_div,
> best_ref_div, best_post_div);
>
> }
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index 22db51d..4ab866e 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -122,7 +122,8 @@ struct drm_device;
> * using the DRM_DEBUG_KMS and DRM_DEBUG.
> */
>
> -extern void drm_ut_debug_printk(unsigned int request_level,
> +extern __attribute__((format (printf, 4, 5)))
> +void drm_ut_debug_printk(unsigned int request_level,
> const char *prefix,
> const char *function_name,
> const char *format, ...);
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