diff mbox

[V2,1/2] efi/fb: Simplify fixup code to prefer struct resource

Message ID 1526653072-7153-1-git-send-email-okaya@codeaurora.org (mailing list archive)
State Not Applicable, archived
Delegated to: Andy Gross
Headers show

Commit Message

Sinan Kaya May 18, 2018, 2:17 p.m. UTC
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 <okaya@codeaurora.org>
---
 drivers/video/fbdev/efifb.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

Comments

Ard Biesheuvel June 13, 2018, 3:42 p.m. UTC | #1
On 18 May 2018 at 16:17, Sinan Kaya <okaya@codeaurora.org> 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 <okaya@codeaurora.org>

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

> ---
>  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
--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Bartlomiej Zolnierkiewicz June 22, 2018, 10:11 a.m. UTC | #2
On Wednesday, June 13, 2018 05:42:11 PM Ard Biesheuvel wrote:
> On 18 May 2018 at 16:17, Sinan Kaya <okaya@codeaurora.org> 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 <okaya@codeaurora.org>
> 
> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

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;
 		}
 	}