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On 10/28/2025 5:37 PM, Kahola, Mika wrote: >> -----Original Message----- >> From: Intel-xe On Behalf Of Naladala Ramanaidu >> Sent: Friday, 17 October 2025 18.05 >> To: intel-xe@lists.freedesktop.org; intel-gfx@lists.freedesktop.org >> Cc: ville.syrjala@linux.intel.com; Nautiyal, Ankit K ; Naladala, Ramanaidu >> >> Subject: [PATCH v2] drm/i915: Add fallback for CDCLK selection when min_cdclk is too high >> >> In cases where the requested minimum CDCLK exceeds all available values for the current reference clock, the CDCLK selection >> logic previously returned 0. This could result coverity division or modulo by zero issue. >> >> This change introduces a fallback mechanism that returns the platform's max_cdclk_freq instead of 0. >> >> v2: Update safe fallback value to max cdclk. >> >> Fixes: Coverity CID 2628056 > We shouldn't mention the static analysis error ids as most of the audience cannot trace it back. > > With this change, this is Sure. I will remove this Fixes tag while merging the patch. > > Reviewed-by: Mika Kahola > >> Signed-off-by: Naladala Ramanaidu >> --- >> drivers/gpu/drm/i915/display/intel_cdclk.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c >> index e92e7fd9fd13..da97c38cca14 100644 >> --- a/drivers/gpu/drm/i915/display/intel_cdclk.c >> +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c >> @@ -1561,7 +1561,7 @@ static int bxt_calc_cdclk(struct intel_display *display, int min_cdclk) >> drm_WARN(display->drm, 1, >> "Cannot satisfy minimum cdclk %d with refclk %u\n", >> min_cdclk, display->cdclk.hw.ref); >> - return 0; >> + return display->cdclk.max_cdclk_freq; >> } >> >> static int bxt_calc_cdclk_pll_vco(struct intel_display *display, int cdclk) >> -- >> 2.43.0