diff options
| author | Dave Airlie <airlied@redhat.com> | 2026-06-26 07:14:07 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2026-06-26 07:14:08 +1000 |
| commit | b41df707b6d7b7ae6188c6fc37ba81859293cb94 (patch) | |
| tree | 6d109a4a78c8a5b1ea37e40c7cc3ccc5c98c7883 /drivers/gpu/drm | |
| parent | 0e8233409d4f6def051dd42a432c6815bb780d78 (diff) | |
| parent | 2ee8dbd880b14fb0b5115bf2353c7900aa33b95b (diff) | |
Merge tag 'drm-intel-next-fixes-2026-06-25-1' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
- Fix corrupted display output on GLK, #16209 (Ville)
- Add missing Spectre mitigation for parallel submit IOCTL (Joonas)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patch.msgid.link/ajzIhInnHnGCwMlu@jlahtine-mobl
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cdclk.c | 41 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_context.c | 1 |
2 files changed, 35 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 189ae2d3cfc9..7bc9b956554b 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -1256,9 +1256,22 @@ static void skl_sanitize_cdclk(struct intel_display *display) cdctl = intel_de_read(display, CDCLK_CTL); expected = (cdctl & CDCLK_FREQ_SEL_MASK) | skl_cdclk_decimal(display->cdclk.hw.cdclk); - if (cdctl == expected) - /* All well; nothing to sanitize */ - return; + + if (cdctl != expected) { + cdctl &= ~CDCLK_FREQ_DECIMAL_MASK; + cdctl |= expected & CDCLK_FREQ_DECIMAL_MASK; + + if (cdctl != expected) + goto sanitize; + + drm_dbg_kms(display->drm, "Sanitizing CDCLK decimal divider (CDCLK_CTL 0x%x, expected 0x%x)\n", + intel_de_read(display, CDCLK_CTL), expected); + + intel_de_write(display, CDCLK_CTL, expected); + } + + /* All well; nothing to sanitize */ + return; sanitize: drm_dbg_kms(display->drm, "Sanitizing cdclk programmed by pre-os\n"); @@ -2354,11 +2367,25 @@ static void bxt_sanitize_cdclk(struct intel_display *display) * (PIPE_NONE). */ cdctl &= ~bxt_cdclk_cd2x_pipe(display, INVALID_PIPE); - expected &= ~bxt_cdclk_cd2x_pipe(display, INVALID_PIPE); + cdctl |= bxt_cdclk_cd2x_pipe(display, INVALID_PIPE); - if (cdctl == expected) - /* All well; nothing to sanitize */ - return; + if (cdctl != expected) { + if (DISPLAY_VER(display) < 20) { + cdctl &= ~CDCLK_FREQ_DECIMAL_MASK; + cdctl |= expected & CDCLK_FREQ_DECIMAL_MASK; + } + + if (cdctl != expected) + goto sanitize; + + drm_dbg_kms(display->drm, "Sanitizing CDCLK decimal divider (CDCLK_CTL 0x%x, expected 0x%x)\n", + intel_de_read(display, CDCLK_CTL), expected); + + intel_de_write(display, CDCLK_CTL, expected); + } + + /* All well; nothing to sanitize */ + return; sanitize: drm_dbg_kms(display->drm, "Sanitizing cdclk programmed by pre-os\n"); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 6ac0f23570f3..aeafe1742d30 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -613,6 +613,7 @@ set_proto_ctx_engines_parallel_submit(struct i915_user_extension __user *base, return -EINVAL; } + slot = array_index_nospec(slot, set->num_engines); if (set->engines[slot].type != I915_GEM_ENGINE_TYPE_INVALID) { drm_dbg(&i915->drm, "Invalid placement[%d], already occupied\n", slot); |