Hi Ran,
On Wed, Feb 3, 2016 at 9:54 PM, Ran Shalit <ranshalit@xxxxxxxxx> wrote:
> Is there any reason why fb_write is missing in skeletonfb.c ?
> Isn't it required ?
No, it's not required, cfr. the comments in include/linux/fb.h:
/* For framebuffers with strange non linear layouts or that do not
* work with normal memory mapped access
*/
ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
size_t count, loff_t *ppos);
ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
size_t count, loff_t *ppos);
If not implemented, drivers/video/fbdev/core/fbmem.c:fb_write() will use
normal memory mapped access.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
