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s390/zcrypt: Locate ep11_domain_query_info onto the stack instead of kmalloc

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Locate the relative small struct ep11_domain_query_info variable
onto the stack instead of kmalloc()/kfree().

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Link: https://lore.kernel.org/r/20250424133619.16495-18-freude@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Harald Freudenberger 2025-04-24 15:36:11 +02:00 committed by Heiko Carstens
parent 9eb61e71d7
commit e9f45ef675
1 changed files with 10 additions and 15 deletions
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25
drivers/s390/crypto/zcrypt_ep11misc.c
View File

@ -702,36 +702,31 @@ int ep11_get_domain_info(u16 card, u16 domain, struct ep11_domain_info *info)
u8 new_WK_VP[32];
u32 dom_flags;
u64 op_mode;
} __packed * p_dom_info;
p_dom_info = kmalloc(sizeof(*p_dom_info), GFP_KERNEL);
if (!p_dom_info)
return -ENOMEM;
} __packed dom_query_info;
rc = ep11_query_info(card, domain, 0x03 /* domain info query */,
sizeof(*p_dom_info), (u8 *)p_dom_info);
sizeof(dom_query_info), (u8 *)&dom_query_info);
if (rc)
goto out;
memset(info, 0, sizeof(*info));
info->cur_wk_state = '0';
info->new_wk_state = '0';
if (p_dom_info->dom_flags & 0x10 /* left imprint mode */) {
if (p_dom_info->dom_flags & 0x02 /* cur wk valid */) {
if (dom_query_info.dom_flags & 0x10 /* left imprint mode */) {
if (dom_query_info.dom_flags & 0x02 /* cur wk valid */) {
info->cur_wk_state = '1';
memcpy(info->cur_wkvp, p_dom_info->cur_WK_VP, 32);
memcpy(info->cur_wkvp, dom_query_info.cur_WK_VP, 32);
}
if (p_dom_info->dom_flags & 0x04 || /* new wk present */
p_dom_info->dom_flags & 0x08 /* new wk committed */) {
if (dom_query_info.dom_flags & 0x04 || /* new wk present */
dom_query_info.dom_flags & 0x08 /* new wk committed */) {
info->new_wk_state =
p_dom_info->dom_flags & 0x08 ? '2' : '1';
memcpy(info->new_wkvp, p_dom_info->new_WK_VP, 32);
dom_query_info.dom_flags & 0x08 ? '2' : '1';
memcpy(info->new_wkvp, dom_query_info.new_WK_VP, 32);
}
}
info->op_mode = p_dom_info->op_mode;
info->op_mode = dom_query_info.op_mode;
out:
kfree(p_dom_info);
return rc;
}
EXPORT_SYMBOL(ep11_get_domain_info);