diff options
| author | Yuxi <b36102@freescale.com> | 2011-10-24 14:22:16 +0800 |
|---|---|---|
| committer | Jason Chen <b02280@freescale.com> | 2011-11-16 16:32:03 +0800 |
| commit | 768659a7ae71103167f40625567d8f4d1c1c33bb (patch) | |
| tree | 639de68b84c6ae1d5255d696400f7872847497aa | |
| parent | 526436c4fe8136163e3d2bb5722a3e0f4ab0f6b7 (diff) | |
ENGR00160626 fix system hang when ipu clk get rate
Enable ipu clk when try get rate
Signed-off-by: Yuxi Sun <b36102@freescale.com>
| -rw-r--r-- | drivers/mxc/ipu3/ipu_disp.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mxc/ipu3/ipu_disp.c b/drivers/mxc/ipu3/ipu_disp.c index 9094fc64f10..9f338107124 100644 --- a/drivers/mxc/ipu3/ipu_disp.c +++ b/drivers/mxc/ipu3/ipu_disp.c @@ -59,7 +59,12 @@ static inline struct ipu_soc *pixelclk2ipu(struct clk *clk) static unsigned long _ipu_pixel_clk_get_rate(struct clk *clk) { struct ipu_soc *ipu = pixelclk2ipu(clk); - u32 div = ipu_di_read(ipu, clk->id, DI_BS_CLKGEN0); + u32 div; + + _ipu_get(ipu); + div = ipu_di_read(ipu, clk->id, DI_BS_CLKGEN0); + _ipu_put(ipu); + if (div == 0) return 0; return (clk_get_rate(clk->parent) * 16) / div; |