V4L/DVB (5441): Saa7146: Fix allocation of clipping memory
Olaf Hering pointed out that SAA7146_CLIPPING_MEM would become very large for PAGE_SIZE > 4K. In fact, the number of clipping windows is limited to 16, and calculate_clipping_registers_rect() does not use more than 256 bytes. SAA7146_CLIPPING_MEM adjusted accordingly. Thanks-to: Olaf Hering <olaf@aepfle.de> Acked-by: Michael Hunold <hunold@linuxtv.org> Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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@ -239,7 +239,8 @@ void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);
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#define SAA7146_HPS_SYNC_PORT_B 0x01
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/* some memory sizes */
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#define SAA7146_CLIPPING_MEM (14*PAGE_SIZE)
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/* max. 16 clipping rectangles */
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#define SAA7146_CLIPPING_MEM (16 * 4 * sizeof(u32))
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/* some defines for the various clipping-modes */
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#define SAA7146_CLIPPING_RECT 0x4
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