* [PATCH] video: bochs: fix IOMEM usage
@ 2023-05-11 12:47 Denis Orlov
2023-05-11 12:50 ` Ahmad Fatoum
2023-05-12 11:15 ` Sascha Hauer
0 siblings, 2 replies; 3+ messages in thread
From: Denis Orlov @ 2023-05-11 12:47 UTC (permalink / raw)
To: barebox; +Cc: Ahmad Fatoum, Denis Orlov
For the PCI version of the driver, we end up calling IOMEM() twice on
both the fb_map and mmio pointers. This happens because we first use
pci_iomap() on PCI resources in the bochs_pci_probe() and then
explicitly call IOMEM() in the bochs_hw_probe(). However, judging from
the parameters of the latter function having __iomem attributes, we
should not be remapping them. So, remove those IOMEM calls and instead
do explicit remapping in bochs_isa_detect(), which was missing it.
Also fix bochs_hw_probe() declaration missing one __iomem.
Signed-off-by: Denis Orlov <denorl2009@gmail.com>
---
drivers/video/bochs/bochs_hw.c | 4 ++--
drivers/video/bochs/bochs_hw.h | 2 +-
drivers/video/bochs/bochs_isa.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/video/bochs/bochs_hw.c b/drivers/video/bochs/bochs_hw.c
index f31020acd4..48de5ea0bd 100644
--- a/drivers/video/bochs/bochs_hw.c
+++ b/drivers/video/bochs/bochs_hw.c
@@ -158,8 +158,8 @@ int bochs_hw_probe(struct device *dev, void __iomem *fb_map,
bochs = xzalloc(sizeof(*bochs));
- bochs->fb_map = IOMEM(fb_map);
- bochs->mmio = IOMEM(mmio);
+ bochs->fb_map = fb_map;
+ bochs->mmio = mmio;
ret = bochs_hw_read_version(bochs);
if (ret < 0) {
diff --git a/drivers/video/bochs/bochs_hw.h b/drivers/video/bochs/bochs_hw.h
index e01ef13d47..c721113656 100644
--- a/drivers/video/bochs/bochs_hw.h
+++ b/drivers/video/bochs/bochs_hw.h
@@ -10,6 +10,6 @@
struct device;
-int bochs_hw_probe(struct device *dev, void *fb_map, void __iomem *mmio);
+int bochs_hw_probe(struct device *dev, void __iomem *fb_map, void __iomem *mmio);
#endif
diff --git a/drivers/video/bochs/bochs_isa.c b/drivers/video/bochs/bochs_isa.c
index 3cedb5c345..50fdecd9c8 100644
--- a/drivers/video/bochs/bochs_isa.c
+++ b/drivers/video/bochs/bochs_isa.c
@@ -26,6 +26,6 @@ static int bochs_isa_detect(void)
if (ret)
return ret;
- return bochs_hw_probe(dev, (void *)0xe0000000, NULL);
+ return bochs_hw_probe(dev, IOMEM(0xe0000000), NULL);
}
device_initcall(bochs_isa_detect);
--
2.30.2
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] video: bochs: fix IOMEM usage
2023-05-11 12:47 [PATCH] video: bochs: fix IOMEM usage Denis Orlov
@ 2023-05-11 12:50 ` Ahmad Fatoum
2023-05-12 11:15 ` Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Ahmad Fatoum @ 2023-05-11 12:50 UTC (permalink / raw)
To: Denis Orlov, barebox
On 11.05.23 14:47, Denis Orlov wrote:
> For the PCI version of the driver, we end up calling IOMEM() twice on
> both the fb_map and mmio pointers. This happens because we first use
> pci_iomap() on PCI resources in the bochs_pci_probe() and then
> explicitly call IOMEM() in the bochs_hw_probe(). However, judging from
> the parameters of the latter function having __iomem attributes, we
> should not be remapping them. So, remove those IOMEM calls and instead
> do explicit remapping in bochs_isa_detect(), which was missing it.
>
> Also fix bochs_hw_probe() declaration missing one __iomem.
>
> Signed-off-by: Denis Orlov <denorl2009@gmail.com>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Thanks!
Ahmad
> ---
> drivers/video/bochs/bochs_hw.c | 4 ++--
> drivers/video/bochs/bochs_hw.h | 2 +-
> drivers/video/bochs/bochs_isa.c | 2 +-
> 3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/bochs/bochs_hw.c b/drivers/video/bochs/bochs_hw.c
> index f31020acd4..48de5ea0bd 100644
> --- a/drivers/video/bochs/bochs_hw.c
> +++ b/drivers/video/bochs/bochs_hw.c
> @@ -158,8 +158,8 @@ int bochs_hw_probe(struct device *dev, void __iomem *fb_map,
>
> bochs = xzalloc(sizeof(*bochs));
>
> - bochs->fb_map = IOMEM(fb_map);
> - bochs->mmio = IOMEM(mmio);
> + bochs->fb_map = fb_map;
> + bochs->mmio = mmio;
>
> ret = bochs_hw_read_version(bochs);
> if (ret < 0) {
> diff --git a/drivers/video/bochs/bochs_hw.h b/drivers/video/bochs/bochs_hw.h
> index e01ef13d47..c721113656 100644
> --- a/drivers/video/bochs/bochs_hw.h
> +++ b/drivers/video/bochs/bochs_hw.h
> @@ -10,6 +10,6 @@
>
> struct device;
>
> -int bochs_hw_probe(struct device *dev, void *fb_map, void __iomem *mmio);
> +int bochs_hw_probe(struct device *dev, void __iomem *fb_map, void __iomem *mmio);
>
> #endif
> diff --git a/drivers/video/bochs/bochs_isa.c b/drivers/video/bochs/bochs_isa.c
> index 3cedb5c345..50fdecd9c8 100644
> --- a/drivers/video/bochs/bochs_isa.c
> +++ b/drivers/video/bochs/bochs_isa.c
> @@ -26,6 +26,6 @@ static int bochs_isa_detect(void)
> if (ret)
> return ret;
>
> - return bochs_hw_probe(dev, (void *)0xe0000000, NULL);
> + return bochs_hw_probe(dev, IOMEM(0xe0000000), NULL);
> }
> device_initcall(bochs_isa_detect);
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] video: bochs: fix IOMEM usage
2023-05-11 12:47 [PATCH] video: bochs: fix IOMEM usage Denis Orlov
2023-05-11 12:50 ` Ahmad Fatoum
@ 2023-05-12 11:15 ` Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Sascha Hauer @ 2023-05-12 11:15 UTC (permalink / raw)
To: Denis Orlov; +Cc: barebox, Ahmad Fatoum
On Thu, May 11, 2023 at 03:47:43PM +0300, Denis Orlov wrote:
> For the PCI version of the driver, we end up calling IOMEM() twice on
> both the fb_map and mmio pointers. This happens because we first use
> pci_iomap() on PCI resources in the bochs_pci_probe() and then
> explicitly call IOMEM() in the bochs_hw_probe(). However, judging from
> the parameters of the latter function having __iomem attributes, we
> should not be remapping them. So, remove those IOMEM calls and instead
> do explicit remapping in bochs_isa_detect(), which was missing it.
>
> Also fix bochs_hw_probe() declaration missing one __iomem.
>
> Signed-off-by: Denis Orlov <denorl2009@gmail.com>
> ---
> drivers/video/bochs/bochs_hw.c | 4 ++--
> drivers/video/bochs/bochs_hw.h | 2 +-
> drivers/video/bochs/bochs_isa.c | 2 +-
> 3 files changed, 4 insertions(+), 4 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/drivers/video/bochs/bochs_hw.c b/drivers/video/bochs/bochs_hw.c
> index f31020acd4..48de5ea0bd 100644
> --- a/drivers/video/bochs/bochs_hw.c
> +++ b/drivers/video/bochs/bochs_hw.c
> @@ -158,8 +158,8 @@ int bochs_hw_probe(struct device *dev, void __iomem *fb_map,
>
> bochs = xzalloc(sizeof(*bochs));
>
> - bochs->fb_map = IOMEM(fb_map);
> - bochs->mmio = IOMEM(mmio);
> + bochs->fb_map = fb_map;
> + bochs->mmio = mmio;
>
> ret = bochs_hw_read_version(bochs);
> if (ret < 0) {
> diff --git a/drivers/video/bochs/bochs_hw.h b/drivers/video/bochs/bochs_hw.h
> index e01ef13d47..c721113656 100644
> --- a/drivers/video/bochs/bochs_hw.h
> +++ b/drivers/video/bochs/bochs_hw.h
> @@ -10,6 +10,6 @@
>
> struct device;
>
> -int bochs_hw_probe(struct device *dev, void *fb_map, void __iomem *mmio);
> +int bochs_hw_probe(struct device *dev, void __iomem *fb_map, void __iomem *mmio);
>
> #endif
> diff --git a/drivers/video/bochs/bochs_isa.c b/drivers/video/bochs/bochs_isa.c
> index 3cedb5c345..50fdecd9c8 100644
> --- a/drivers/video/bochs/bochs_isa.c
> +++ b/drivers/video/bochs/bochs_isa.c
> @@ -26,6 +26,6 @@ static int bochs_isa_detect(void)
> if (ret)
> return ret;
>
> - return bochs_hw_probe(dev, (void *)0xe0000000, NULL);
> + return bochs_hw_probe(dev, IOMEM(0xe0000000), NULL);
> }
> device_initcall(bochs_isa_detect);
> --
> 2.30.2
>
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-05-11 12:50 ` Ahmad Fatoum
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