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authorOliver Endriss <o.endriss@gmx.de>2007-03-28 21:22:42 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-06 03:43:16 -0700
commit1d9f5f2cf993fad1cdb64ada83d469fe4df40865 (patch)
treeabdcdfce6870c4d4acae9c3eaaa40115ed64190c
parent5e37b8eb6d8f4caa1150a1f3666e08f69798ed31 (diff)
downloadlinux-linaro-stable-1d9f5f2cf993fad1cdb64ada83d469fe4df40865.tar.gz
V4L: saa7146: Fix allocation of clipping memory
V4L: 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. (cherry picked from commit 7a7cd1920969dd9da4e0d99aab573b3eba24c799) 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> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--include/media/saa7146_vv.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/media/saa7146_vv.h b/include/media/saa7146_vv.h
index 83fe2e3d1e25..50e33b0e9349 100644
--- a/include/media/saa7146_vv.h
+++ b/include/media/saa7146_vv.h
@@ -239,7 +239,8 @@ void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);
#define SAA7146_HPS_SYNC_PORT_B 0x01
/* some memory sizes */
-#define SAA7146_CLIPPING_MEM (14*PAGE_SIZE)
+/* max. 16 clipping rectangles */
+#define SAA7146_CLIPPING_MEM (16 * 4 * sizeof(u32))
/* some defines for the various clipping-modes */
#define SAA7146_CLIPPING_RECT 0x4