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powerpc/pseries: Remove VLA from lparcfg_write() 

In lparcfg_write we hard code kbuf_sz and then use this as the variable
length of kbuf creating a variable length array. Since we're hard coding
the length anyway just define the array using this as the length and
remove the need for kbuf_sz, thus removing the variable length array.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Suraj Jitindar Singh 2018-09-05 12:09:51 +10:00 committed by Michael Ellerman
parent ab91239942
commit 74422e2b19
1 changed files with 2 additions and 3 deletions
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5
arch/powerpc/platforms/pseries/lparcfg.c
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@ -585,8 +585,7 @@ static ssize_t update_mpp(u64 *entitlement, u8 *weight)
static ssize_t lparcfg_write(struct file *file, const char __user * buf, static ssize_t lparcfg_write(struct file *file, const char __user * buf,
size_t count, loff_t * off) size_t count, loff_t * off)
{ {
int kbuf_sz = 64; char kbuf[64];
char kbuf[kbuf_sz];
char *tmp; char *tmp;
u64 new_entitled, *new_entitled_ptr = &new_entitled; u64 new_entitled, *new_entitled_ptr = &new_entitled;
u8 new_weight, *new_weight_ptr = &new_weight; u8 new_weight, *new_weight_ptr = &new_weight;
@ -595,7 +594,7 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
if (!firmware_has_feature(FW_FEATURE_SPLPAR)) if (!firmware_has_feature(FW_FEATURE_SPLPAR))
return -EINVAL; return -EINVAL;
if (count > kbuf_sz) if (count > sizeof(kbuf))
return -EINVAL; return -EINVAL;
if (copy_from_user(kbuf, buf, count)) if (copy_from_user(kbuf, buf, count))