Thread (4 messages) flat view 4 messages, 2 authors, 2017-10-18
STALE3223d

[PATCH 2/2] powerpc-ps3: Improve a size determination in two functions

From: SF Markus Elfring <hidden>
Date: 2017-10-17 18:57:26
Also in: kernel-janitors, lkml
Subsystem: linux for powerpc (32-bit and 64-bit), ps3 platform support, the rest · Maintainers: Madhavan Srinivasan, Geoff Levand, Linus Torvalds

From: Markus Elfring <redacted>
Date: Tue, 17 Oct 2017 20:15:17 +0200

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <redacted>
---
 arch/powerpc/platforms/ps3/mm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index b0f34663b1ae..257de451e324 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -524,8 +524,7 @@ static int dma_sb_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
 	int result;
 	struct dma_chunk *c;
 
-	c = kzalloc(sizeof(struct dma_chunk), GFP_ATOMIC);
-
+	c = kzalloc(sizeof(*c), GFP_ATOMIC);
 	if (!c) {
 		result = -ENOMEM;
 		goto fail_alloc;
@@ -570,8 +569,7 @@ static int dma_ioc0_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
 
 	DBG(KERN_ERR "%s: phy=%#lx, lpar%#lx, len=%#lx\n", __func__,
 	    phys_addr, ps3_mm_phys_to_lpar(phys_addr), len);
-	c = kzalloc(sizeof(struct dma_chunk), GFP_ATOMIC);
-
+	c = kzalloc(sizeof(*c), GFP_ATOMIC);
 	if (!c) {
 		result = -ENOMEM;
 		goto fail_alloc;
-- 
2.14.2
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