Re: [PATCH v2 1/3] fbdev/g364fb: Fix build failure

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On 2/7/20 12:01 AM, Finn Thain wrote:
> This patch resolves these compiler errors and warnings --
> 
>   CC      drivers/video/fbdev/g364fb.o
> drivers/video/fbdev/g364fb.c: In function 'g364fb_cursor':
> drivers/video/fbdev/g364fb.c:137:9: error: 'x' undeclared (first use in this function)
> drivers/video/fbdev/g364fb.c:137:9: note: each undeclared identifier is reported only once for each function it appears in
> drivers/video/fbdev/g364fb.c:137:7: error: implicit declaration of function 'fontwidth' [-Werror=implicit-function-declaration]
> drivers/video/fbdev/g364fb.c:137:23: error: 'p' undeclared (first use in this function)
> drivers/video/fbdev/g364fb.c:137:38: error: 'y' undeclared (first use in this function)
> drivers/video/fbdev/g364fb.c:137:7: error: implicit declaration of function 'fontheight' [-Werror=implicit-function-declaration]
> drivers/video/fbdev/g364fb.c: In function 'g364fb_init':
> drivers/video/fbdev/g364fb.c:233:24: error: 'fbvar' undeclared (first use in this function)
> drivers/video/fbdev/g364fb.c:234:24: error: 'xres' undeclared (first use in this function)
> drivers/video/fbdev/g364fb.c:201:14: warning: unused variable 'j' [-Wunused-variable]
> drivers/video/fbdev/g364fb.c:197:25: warning: unused variable 'pal_ptr' [-Wunused-variable]
> 
> The MIPS Magnum framebuffer console now works when tested in QEMU.
> 
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>
> Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>

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

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

> ---
>  drivers/video/fbdev/g364fb.c | 29 +++--------------------------
>  1 file changed, 3 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/video/fbdev/g364fb.c b/drivers/video/fbdev/g364fb.c
> index 845b79da2a7c..05837a3b985c 100644
> --- a/drivers/video/fbdev/g364fb.c
> +++ b/drivers/video/fbdev/g364fb.c
> @@ -108,7 +108,6 @@ static int g364fb_pan_display(struct fb_var_screeninfo *var,
>  static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
>  			    u_int blue, u_int transp,
>  			    struct fb_info *info);
> -static int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
>  static int g364fb_blank(int blank, struct fb_info *info);
>  
>  static const struct fb_ops g364fb_ops = {
> @@ -119,28 +118,8 @@ static const struct fb_ops g364fb_ops = {
>  	.fb_fillrect	= cfb_fillrect,
>  	.fb_copyarea	= cfb_copyarea,
>  	.fb_imageblit	= cfb_imageblit,
> -	.fb_cursor	= g364fb_cursor,
>  };
>  
> -int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
> -{
> -	
> -	switch (cursor->enable) {
> -	case CM_ERASE:
> -		*(unsigned int *) CTLA_REG |= CURS_TOGGLE;
> -		break;
> -
> -	case CM_MOVE:
> -	case CM_DRAW:
> -		*(unsigned int *) CTLA_REG &= ~CURS_TOGGLE;
> -		*(unsigned int *) CURS_POS_REG =
> -		    ((x * fontwidth(p)) << 12) | ((y * fontheight(p)) -
> -						  info->var.yoffset);
> -		break;
> -	}
> -	return 0;
> -}
> -
>  /*
>   *  Pan or Wrap the Display
>   *
> @@ -194,11 +173,9 @@ static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
>   */
>  int __init g364fb_init(void)
>  {
> -	volatile unsigned int *pal_ptr =
> -	    (volatile unsigned int *) CLR_PAL_REG;
>  	volatile unsigned int *curs_pal_ptr =
>  	    (volatile unsigned int *) CURS_PAL_REG;
> -	int mem, i, j;
> +	int mem, i;
>  
>  	if (fb_get_options("g364fb", NULL))
>  		return -ENODEV;
> @@ -230,8 +207,8 @@ int __init g364fb_init(void)
>  	 */
>  	*(unsigned short *) (CURS_PAT_REG + 14 * 64) = 0xffff;
>  	*(unsigned short *) (CURS_PAT_REG + 15 * 64) = 0xffff;
> -	fb_var.xres_virtual = fbvar.xres;
> -	fb_fix.line_length = (xres / 8) * fb_var.bits_per_pixel;
> +	fb_var.xres_virtual = fb_var.xres;
> +	fb_fix.line_length = fb_var.xres_virtual * fb_var.bits_per_pixel / 8;
>  	fb_fix.smem_start = 0x40000000;	/* physical address */
>  	/* get size of video memory; this is special for the JAZZ hardware */
>  	mem = (r4030_read_reg32(JAZZ_R4030_CONFIG) >> 8) & 3;
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