diff options
| author | Jeff Garzik <jeff@garzik.org> | 2006-12-08 02:40:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:29:05 -0800 |
| commit | fd717689f46436fc212882ddc6e02a20be920634 (patch) | |
| tree | 4b4a7bd76f23716fbd14886cfdfb9aab7033b2f8 /drivers/video/aty/aty128fb.c | |
| parent | 945f0ee257b4f91498b4061dc89b8a68c423ea6f (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/aty128fb.c')
| -rw-r--r-- | drivers/video/aty/aty128fb.c | 5 |
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; |