From: xiaolinkui <xiaolinkui@kylinos.cn>
Date: Fri, 17 May 2019 07:15:17 +0000 (+0800)
Subject: s390/idal: use struct_size() in kmalloc()
X-Git-Tag: v5.15~6067^2~62
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=31885a8dad16a319a394d82807c3b708882b50a1;p=platform%2Fkernel%2Flinux-starfive.git

s390/idal: use struct_size() in kmalloc()

Use the new struct_size() helper to keep code simple.

Signed-off-by: xiaolinkui <xiaolinkui@kylinos.cn>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---

diff --git a/arch/s390/include/asm/idals.h b/arch/s390/include/asm/idals.h
index 15578fd..6fb7ace 100644
--- a/arch/s390/include/asm/idals.h
+++ b/arch/s390/include/asm/idals.h
@@ -122,8 +122,7 @@ idal_buffer_alloc(size_t size, int page_order)
 
 	nr_ptrs = (size + IDA_BLOCK_SIZE - 1) >> IDA_SIZE_LOG;
 	nr_chunks = (4096 << page_order) >> IDA_SIZE_LOG;
-	ib = kmalloc(sizeof(struct idal_buffer) + nr_ptrs*sizeof(void *),
-		     GFP_DMA | GFP_KERNEL);
+	ib = kmalloc(struct_size(ib, data, nr_ptrs), GFP_DMA | GFP_KERNEL);
 	if (ib == NULL)
 		return ERR_PTR(-ENOMEM);
 	ib->size = size;