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ddrfreq:fix bug and add check vzalloc
author
cym
<cym@rock-chips.com>
Tue, 8 Oct 2013 07:02:19 +0000
(15:02 +0800)
committer
cym
<cym@rock-chips.com>
Tue, 8 Oct 2013 07:02:19 +0000
(15:02 +0800)
arch/arm/plat-rk/ddr_freq.c
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diff --git
a/arch/arm/plat-rk/ddr_freq.c
b/arch/arm/plat-rk/ddr_freq.c
index 0ae0b7d16f20a993eef078026ad30cf4334b6e20..c105e457c2bcf17fd12ea4953b613aa265b036bb 100755
(executable)
--- a/
arch/arm/plat-rk/ddr_freq.c
+++ b/
arch/arm/plat-rk/ddr_freq.c
@@
-300,9
+300,14
@@
static ssize_t video_state_write(struct file *file, const char __user *buffer,
uint32_t v_width=0,v_height=0,v_sync=0;
cookie_pot = buf;
- if (count < 1)
+ if(!buf)
+ return -ENOMEM;
+
+ if (count < 1){
vfree(buf);
- return count;
+ return -EPERM;
+ }
+
if (copy_from_user(cookie_pot, buffer, count)) {
vfree(buf);
return -EFAULT;