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ENGR00116086 fb: mmap fail for first time for fb2

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If did not set_var, fb driver will not allocate buffers. If user call
fb_set_var with the same size as fb default setting(in mxcfb_probe,
usually 240x320),fb drvier will not call mxcfb_set_par if no
FB_ACTIVATE_FORCE flag set, which will make mmap fail.
Allocate fb buffers in mxcfb_probe avoid such issue, but it will consume
memory at the very beginning.

Signed-off-by: Jason Chen <b02280@freescale.com>
This commit is contained in:
Jason Chen
2009-09-16 13:52:42 +08:00
committed by Matt Sealey
parent 55a8300bb3
commit f89965349a
1 changed files with 8 additions and 3 deletions
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11
drivers/video/mxc/mxc_ipuv3_fb.c
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@@ -1449,9 +1449,6 @@ static int mxcfb_probe(struct platform_device *pdev)
}
ipu_disable_irq(mxcfbi->ipu_ch_irq);
/* Default Y virtual size is 2x panel size */
fbi->var.yres_virtual = fbi->var.yres * 2;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res) {
fbi->fix.smem_len = res->end - res->start + 1;
@@ -1478,8 +1475,16 @@ static int mxcfb_probe(struct platform_device *pdev)
}
mxcfb_check_var(&fbi->var, fbi);
/* Default Y virtual size is 2x panel size */
fbi->var.yres_virtual = fbi->var.yres * 2;
mxcfb_set_fix(fbi);
/* alocate fb first */
if (mxcfb_map_video_memory(fbi) < 0)
return -ENOMEM;
ret = register_framebuffer(fbi);
if (ret < 0)
goto err2;