From: Hans Verkuil Date: Mon, 9 Jan 2006 17:32:43 +0000 (-0200) Subject: V4L/DVB (3195): Fix for 64-bit compile warning X-Git-Tag: v2.6.16-rc1~663^2~29 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82a1c359e8cc15d836c139626d747bfdfc408450;p=linux-2.6 V4L/DVB (3195): Fix for 64-bit compile warning - Add the fix for the saa7146 64-bit compile warning (again). This time with comments and checked by Johannes Stezenbach. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/common/saa7146_hlp.c b/drivers/media/common/saa7146_hlp.c index ec52dff8cb..33bec8a684 100644 --- a/drivers/media/common/saa7146_hlp.c +++ b/drivers/media/common/saa7146_hlp.c @@ -562,19 +562,26 @@ static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int int b_depth = vv->ov_fmt->depth; int b_bpl = vv->ov_fb.fmt.bytesperline; - u32 base = (u32)vv->ov_fb.base; + /* The unsigned long cast is to remove a 64-bit compile warning since + it looks like a 64-bit address is cast to a 32-bit value, even + though the base pointer is really a 32-bit physical address that + goes into a 32-bit DMA register. + FIXME: might not work on some 64-bit platforms, but see the FIXME + in struct v4l2_framebuffer (videodev2.h) for that. + */ + u32 base = (u32)(unsigned long)vv->ov_fb.base; struct saa7146_video_dma vdma1; /* calculate memory offsets for picture, look if we shall top-down-flip */ vdma1.pitch = 2*b_bpl; if ( 0 == vv->vflip ) { - vdma1.base_even = (u32)base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); + vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); vdma1.base_odd = vdma1.base_even + (vdma1.pitch / 2); vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2)); } else { - vdma1.base_even = (u32)base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); + vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); vdma1.base_odd = vdma1.base_even - (vdma1.pitch / 2); vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2)); }