On Fri, Feb 20, 2015 at 11:34:09PM +0200, Andrey Utkin wrote:
> See below how sparse output changed with these changes.
> In few words:
> - fixed printf specifiers for size_t;
> - trying to fix address space specifiers issues, not sure what's correct approach, ASKING FOR COMMENTS AND HELP;
Send two separate patches. You can't "fix" sparse warnings. You can
only "fix" bugs. The rest is add annotation, doing cleanups or possibly
silencing warnings.
> - didn't touch "was not declared. Should it be static?" yet.
>
> -drivers/staging/fbtft/fbtft-core.c: In function ‘fbtft_register_framebuffer’:
[ millions of lines of warnings snipped. ]
> drivers/staging/fbtft/fbtft_device.c:32:19: warning: symbol 'spi_device' was not declared. Should it be static?
> drivers/staging/fbtft/fbtft_device.c:33:24: warning: symbol 'p_device' was not declared. Should it be static?
This changelog is a bit rubbish because it's just copy and pasted
warnings for things that didn't change.
>
> This is for Eudyptulla challenge. If you want me to help with any other staging driver, I am open.
Don't put this in the changelog.
> diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
> index 9cc7d25..9114239 100644
> --- a/drivers/staging/fbtft/fb_agm1264k-fl.c
> +++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
> @@ -273,7 +273,7 @@ construct_line_bitmap(struct fbtft_par *par, u8 *dest, signed short *src,
>
> static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
> {
> - u16 *vmem16 = (u16 *)par->info->screen_base;
> + u16 __iomem *vmem16 = (u16 __iomem *)par->info->screen_base;
I haven't looked. What is the type for ->screen_base and why can't it
be declared as __iomem type?
> u8 *buf = par->txbuf.buf;
> int x, y;
> int ret = 0;
> @@ -287,7 +287,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
> /* converting to grayscale16 */
> for (x = 0; x < par->info->var.xres; ++x)
> for (y = 0; y < par->info->var.yres; ++y) {
> - u16 pixel = vmem16[y * par->info->var.xres + x];
> + u16 pixel = ioread16(vmem16 + y * par->info->var.xres + x);
You're saying this is a bug in the original code. Are you positive?
The changelog should have explained your thinking here. Same for all
the iomem changes.
regards,
dan carpenter
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