Subject: [PATCH 1/2] video: fbdev: w100fb: fix sparse warnings

* Add missing __iomem annotations where needed.
* Make w100fb_probe() static.
* Return NULL pointer (instead of using plain integer) in
w100_get_xtal_tabl().

Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
---
drivers/video/fbdev/w100fb.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

Index: b/drivers/video/fbdev/w100fb.c
===================================================================
--- a/drivers/video/fbdev/w100fb.c
+++ b/drivers/video/fbdev/w100fb.c
@@ -61,9 +61,9 @@ struct w100_pll_info *w100_get_xtal_tabl
#define BITS_PER_PIXEL 16

/* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
-static void *remapped_base;
-static void *remapped_regs;
-static void *remapped_fbuf;
+static void __iomem *remapped_base;
+static void __iomem *remapped_regs;
+static void __iomem *remapped_fbuf;

#define REMAPPED_FB_LEN 0x15ffff

@@ -635,7 +635,7 @@ static int w100fb_resume(struct platform
#endif


-int w100fb_probe(struct platform_device *pdev)
+static int w100fb_probe(struct platform_device *pdev)
{
int err = -EIO;
struct w100fb_mach_info *inf;
@@ -807,10 +807,11 @@ static int w100fb_remove(struct platform

static void w100_soft_reset(void)
{
- u16 val = readw((u16 *) remapped_base + cfgSTATUS);
- writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS);
+ u16 val = readw((u16 __iomem *)remapped_base + cfgSTATUS);
+
+ writew(val | 0x08, (u16 __iomem *)remapped_base + cfgSTATUS);
udelay(100);
- writew(0x00, (u16 *) remapped_base + cfgSTATUS);
+ writew(0x00, (u16 __iomem *)remapped_base + cfgSTATUS);
udelay(100);
}

@@ -1022,7 +1023,8 @@ struct w100_pll_info *w100_get_xtal_tabl
return pll_entry->pll_table;
pll_entry++;
} while (pll_entry->xtal_freq);
- return 0;
+
+ return NULL;
}



2020-01-17 18:59:02

by Sam Ravnborg

[permalink] [raw]
Subject: Re: [PATCH 1/2] video: fbdev: w100fb: fix sparse warnings

On Thu, Jan 16, 2020 at 03:53:20PM +0100, Bartlomiej Zolnierkiewicz wrote:
> * Add missing __iomem annotations where needed.
> * Make w100fb_probe() static.
> * Return NULL pointer (instead of using plain integer) in
> w100_get_xtal_tabl().
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
Acked-by: Sam Ravnborg <[email protected]>
> ---
> drivers/video/fbdev/w100fb.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> Index: b/drivers/video/fbdev/w100fb.c
> ===================================================================
> --- a/drivers/video/fbdev/w100fb.c
> +++ b/drivers/video/fbdev/w100fb.c
> @@ -61,9 +61,9 @@ struct w100_pll_info *w100_get_xtal_tabl
> #define BITS_PER_PIXEL 16
>
> /* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
> -static void *remapped_base;
> -static void *remapped_regs;
> -static void *remapped_fbuf;
> +static void __iomem *remapped_base;
> +static void __iomem *remapped_regs;
> +static void __iomem *remapped_fbuf;
>
> #define REMAPPED_FB_LEN 0x15ffff
>
> @@ -635,7 +635,7 @@ static int w100fb_resume(struct platform
> #endif
>
>
> -int w100fb_probe(struct platform_device *pdev)
> +static int w100fb_probe(struct platform_device *pdev)
> {
> int err = -EIO;
> struct w100fb_mach_info *inf;
> @@ -807,10 +807,11 @@ static int w100fb_remove(struct platform
>
> static void w100_soft_reset(void)
> {
> - u16 val = readw((u16 *) remapped_base + cfgSTATUS);
> - writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS);
> + u16 val = readw((u16 __iomem *)remapped_base + cfgSTATUS);
> +
> + writew(val | 0x08, (u16 __iomem *)remapped_base + cfgSTATUS);
> udelay(100);
> - writew(0x00, (u16 *) remapped_base + cfgSTATUS);
> + writew(0x00, (u16 __iomem *)remapped_base + cfgSTATUS);
> udelay(100);
> }
>
> @@ -1022,7 +1023,8 @@ struct w100_pll_info *w100_get_xtal_tabl
> return pll_entry->pll_table;
> pll_entry++;
> } while (pll_entry->xtal_freq);
> - return 0;
> +
> + return NULL;
> }
>
>
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

Subject: Re: [PATCH 1/2] video: fbdev: w100fb: fix sparse warnings


On 1/17/20 7:57 PM, Sam Ravnborg wrote:
> On Thu, Jan 16, 2020 at 03:53:20PM +0100, Bartlomiej Zolnierkiewicz wrote:
>> * Add missing __iomem annotations where needed.
>> * Make w100fb_probe() static.
>> * Return NULL pointer (instead of using plain integer) in
>> w100_get_xtal_tabl().
>>
>> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
> Acked-by: Sam Ravnborg <[email protected]>
Thanks, patch queued for v5.7.

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