From: Ilpo Järvinen Date: Thu, 13 Nov 2025 18:00:48 +0000 (+0200) Subject: drm/i915/gt: Use pci_rebar_size_supported() X-Git-Url: https://gentwo.org/gitweb/?a=commitdiff_plain;h=c59038d3c059451267b111629ab5b9404f3b3015;p=linux%2F.git drm/i915/gt: Use pci_rebar_size_supported() PCI core provides pci_rebar_size_supported() that helps in checking if an encoded BAR Size is supported for the BAR or not. Use it in i915_resize_lmem_bar() to simplify code. Signed-off-by: Ilpo Järvinen Signed-off-by: Bjorn Helgaas Reviewed-by: Jani Nikula Reviewed-by: Andi Shyti Acked-by: Christian König Acked-by: Jani Nikula Link: https://patch.msgid.link/20251113180053.27944-7-ilpo.jarvinen@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c index c37a0560ebe0..15e83ce00eff 100644 --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c @@ -49,16 +49,12 @@ static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t current_size = roundup_pow_of_two(pci_resource_len(pdev, GEN12_LMEM_BAR)); if (i915->params.lmem_bar_size) { - u32 bar_sizes; - - rebar_size = i915->params.lmem_bar_size * - (resource_size_t)SZ_1M; - bar_sizes = pci_rebar_get_possible_sizes(pdev, GEN12_LMEM_BAR); - + rebar_size = i915->params.lmem_bar_size * (resource_size_t)SZ_1M; if (rebar_size == current_size) return; - if (!(bar_sizes & BIT(pci_rebar_bytes_to_size(rebar_size))) || + if (!pci_rebar_size_supported(pdev, GEN12_LMEM_BAR, + pci_rebar_bytes_to_size(rebar_size)) || rebar_size >= roundup_pow_of_two(lmem_size)) { rebar_size = lmem_size;