[Lcdproc] patch for CwLnx display corruption

[Gideon]

Just noticed someone submitted a patch for that around a week ago. 
Thanks :) I'll do some testing then.

BTW, the key press response is really slow, unless I reduce the 
RENDER_FREQ  to under 4 frames per second.  Any better idea to fix that?

BR,

Gideon Tsang



Gideon wrote:
> Hi all,
> 
> The CwLnx driver displays corrupted data since v0.5.x.  The display has 
> problem handing the data if a string of characters is sent at once. 
> Attached is the patch against v0.5.2.
> 
> BR,
> 
> Gideon Tsang
> 
> 
> ------------------------------------------------------------------------
> 
> diff -ru -xCVS -x'.#*' -x'*.so' -x'*~' -x'*conf*' -x'*.P*' -x'Makefile*' lcdproc-0.5.2.orig/server/drivers/CwLnx.c lcdproc-0.5.2/server/drivers/CwLnx.c
> --- lcdproc-0.5.2.orig/server/drivers/CwLnx.c	2007-04-14 22:38:14.000000000 +0800
> +++ lcdproc-0.5.2/server/drivers/CwLnx.c	2007-05-09 17:09:44.000000000 +0800
> @@ -153,17 +153,17 @@
>  
>  static int Write_LCD(int fd, char *c, int size)
>  {
> -    int rc;
> +    int rc, i;
>      int retries = 30;
>  
> -    do {
> -	rc = write(fd, c, size);
> -        if (rc == size)
> -	    break;
> -	usleep(DELAY);
> -        
> -    } while (--retries > 0);
> -
> +    for (i = 0; i < size; i++) {
> +        do {
> +            rc = write(fd, &c[i], 1);
> +            if (rc == 1)
> +            break;
> +        usleep(DELAY);
> +        } while (--retries > 0);
> +    }
>      return rc;
>  }