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* Re: [PATCH] 2.5.59 : sound/oss/vidc.c (CORRECTED)
@ 2003-02-08  0:45 Alexei Podtelezhnikov
  2003-02-08 11:25 ` John Bradford
  0 siblings, 1 reply; 2+ messages in thread
From: Alexei Podtelezhnikov @ 2003-02-08  0:45 UTC (permalink / raw)
  To: john; +Cc: linux-kernel

John Bradford (john@grabjohn.com) wrote:

> 36 < hwrate < 3332
       ^^^^^^  should be 'newsize'

Yeap, and the following couple of lines:

                /* 36 < newsize 3332; rounding it off 
                 * to the nearest power of 2, no less than 256 
                 */
                for (new2size = 384; new2size < newsize; new2size <<= 1);
                new2size -= new2size / 3;

safely replace the whole following block:

                if (newsize < 208)
                        newsize = 208;
                if (newsize > 4096)
                        newsize = 4096;
                for (new2size = 128; new2size < newsize; new2size <<= 1);
                        if (new2size - newsize > newsize - (new2size >> 1))
                                new2size >>= 1;
                if (new2size > 4096) {
                        printk(KERN_ERR "VIDC: error: dma buffer (%d) %d > 4K\n",
                                newsize, new2size);
                        new2size = 4096;
                }

Would somebody test this?
A.



^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] 2.5.59 : sound/oss/vidc.c (CORRECTED)
  2003-02-08  0:45 [PATCH] 2.5.59 : sound/oss/vidc.c (CORRECTED) Alexei Podtelezhnikov
@ 2003-02-08 11:25 ` John Bradford
  0 siblings, 0 replies; 2+ messages in thread
From: John Bradford @ 2003-02-08 11:25 UTC (permalink / raw)
  To: Alexei Podtelezhnikov; +Cc: linux-kernel, rmk

> 
> John Bradford (john@grabjohn.com) wrote:
> 
> > 36 < hwrate < 3332
>        ^^^^^^  should be 'newsize'
> 
> Yeap, and the following couple of lines:
> 
>                 /* 36 < newsize 3332; rounding it off 
>                  * to the nearest power of 2, no less than 256 
>                  */
>                 for (new2size = 384; new2size < newsize; new2size <<= 1);
>                 new2size -= new2size / 3;
> 
> safely replace the whole following block:
> 
>                 if (newsize < 208)
>                         newsize = 208;
>                 if (newsize > 4096)
>                         newsize = 4096;
>                 for (new2size = 128; new2size < newsize; new2size <<= 1);
>                         if (new2size - newsize > newsize - (new2size >> 1))
>                                 new2size >>= 1;
>                 if (new2size > 4096) {
>                         printk(KERN_ERR "VIDC: error: dma buffer (%d) %d > 4K\n",
>                                 newsize, new2size);
>                         new2size = 4096;
>                 }
> 
> Would somebody test this?

The only change I'd make would be:

-                 /* 36 < newsize 3332; rounding it off 
+                 /* 36 <= newsize <= 3332; rounding it off 

John

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2003-02-08  0:45 [PATCH] 2.5.59 : sound/oss/vidc.c (CORRECTED) Alexei Podtelezhnikov
2003-02-08 11:25 ` John Bradford

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