Re: [PATCH V2 1/2] efi/fb: Simplify fixup code to prefer struct resource
From: Ard Biesheuvel <hidden>
Date: 2018-06-13 15:42:19
Also in:
dri-devel, linux-arm-kernel, linux-arm-msm, lkml
On 18 May 2018 at 16:17, Sinan Kaya [off-list ref] wrote:
Get rid of base and size variables in favor of a struct resource. The conditional for checking window can be replaced with resource_contains(). Signed-off-by: Sinan Kaya <redacted>
Reviewed-by: Ard Biesheuvel <redacted>
quoted hunk ↗ jump to hunk
--- drivers/video/fbdev/efifb.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index 46a4484..6daac8d 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c@@ -426,17 +426,20 @@ static void record_efifb_bar_resource(struct pci_dev *dev, int idx, u64 offset) static void efifb_fixup_resources(struct pci_dev *dev) { - u64 base = screen_info.lfb_base; - u64 size = screen_info.lfb_size; + struct resource screen_res = { + .start = screen_info.lfb_base, + .end = screen_info.lfb_base + screen_info.lfb_size - 1, + .flags = IORESOURCE_MEM, + }; int i; if (efifb_pci_dev || screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) return; if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) - base |= (u64)screen_info.ext_lfb_base << 32; + screen_res.start |= (u64)screen_info.ext_lfb_base << 32; - if (!base) + if (!screen_res.start) return; for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {@@ -445,8 +448,10 @@ static void efifb_fixup_resources(struct pci_dev *dev) if (!(res->flags & IORESOURCE_MEM)) continue; - if (res->start <= base && res->end >= base + size - 1) { - record_efifb_bar_resource(dev, i, base - res->start); + if (resource_contains(res, &screen_res)) { + u64 win_offset = screen_res.start - res->start; + + record_efifb_bar_resource(dev, i, win_offset); break; } } --2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel