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authorJeff Garzik <jeff@garzik.org>2006-12-08 02:40:17 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:29:05 -0800
commitfd717689f46436fc212882ddc6e02a20be920634 (patch)
tree4b4a7bd76f23716fbd14886cfdfb9aab7033b2f8 /drivers/video/aty
parent945f0ee257b4f91498b4061dc89b8a68c423ea6f (diff)
[PATCH] atyfb, rivafb: minor fixes
aty128fb: return an error in the unlikely event that we cannot calculate some key PLL info rivafb: * call CalcStateExt() directly, rather than via function pointers, since CalcStateExt() is the only value ever assigned to ->CalcStateExt(). * propagate error return back from CalcVClock() through callers Signed-off-by: Jeff Garzik <jeff@garzik.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/aty')
-rw-r--r--drivers/video/aty/aty128fb.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 276a21530b9..3feddf89d10 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -1333,6 +1333,8 @@ static int aty128_var_to_pll(u32 period_in_ps, struct aty128_pll *pll,
if (vclk * 12 < c.ppll_min)
vclk = c.ppll_min/12;
+ pll->post_divider = -1;
+
/* now, find an acceptable divider */
for (i = 0; i < sizeof(post_dividers); i++) {
output_freq = post_dividers[i] * vclk;
@@ -1342,6 +1344,9 @@ static int aty128_var_to_pll(u32 period_in_ps, struct aty128_pll *pll,
}
}
+ if (pll->post_divider < 0)
+ return -EINVAL;
+
/* calculate feedback divider */
n = c.ref_divider * output_freq;
d = c.ref_clk;