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powerpc/pseries/hvcserver: don't memset pi_buff if it is null

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pi_buff is being memset before it is sanity checked. Move the
memset after the null pi_buff sanity check to avoid an oops.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Colin Ian King 2015-10-08 20:00:58 +01:00 committed by Michael Ellerman
parent f78f7ed726
commit c13e1c05b2
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/platforms/pseries/hvcserver.c
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@ -142,11 +142,11 @@ int hvcs_get_partner_info(uint32_t unit_address, struct list_head *head,
int more = 1;
int retval;
memset(pi_buff, 0x00, PAGE_SIZE);
/* invalid parameters */
if (!head || !pi_buff)
return -EINVAL;
memset(pi_buff, 0x00, PAGE_SIZE);
last_p_partition_ID = last_p_unit_address = ~0UL;
INIT_LIST_HEAD(head);