[PATCH 0/2] PowerPC-PS3: Adjustments for three function implementations

From: Markus Elfring <redacted>
Date: Tue, 17 Oct 2017 20:22:44 +0200

Two update suggestions were taken into account
from static source code analysis.

Markus Elfring (2):
  Delete an error message for a failed memory allocation in update_flash_db()
  Improve a size determination in two functions

 arch/powerpc/platforms/ps3/mm.c      | 6 ++----
 arch/powerpc/platforms/ps3/os-area.c | 4 +---
 2 files changed, 3 insertions(+), 7 deletions(-)

-- 
2.14.2

From: Markus Elfring <redacted>
Date: Tue, 17 Oct 2017 20:00:31 +0200

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <redacted>
---
 arch/powerpc/platforms/ps3/os-area.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/ps3/os-area.c b/arch/powerpc/platforms/ps3/os-area.c
index 3db53e8aff92..f2a8875e25d1 100644
--- a/arch/powerpc/platforms/ps3/os-area.c
+++ b/arch/powerpc/platforms/ps3/os-area.c

@@ -625,10 +625,8 @@ static int update_flash_db(void)
 	/* Read in header and db from flash. */
 
 	header = kmalloc(buf_len, GFP_KERNEL);
-	if (!header) {
-		pr_debug("%s: kmalloc failed\n", __func__);
+	if (!header)
 		return -ENOMEM;
-	}
 
 	count = os_area_flash_read(header, buf_len, 0);
 	if (count < 0) {

-- 
2.14.2

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

On 10/17/2017 11:54 AM, SF Markus Elfring wrote:

Markus Elfring (2):
  Delete an error message for a failed memory allocation in update_flash_db()
  Improve a size determination in two functions

For consistency, please use 'powerpc/ps3' not 'powerpc-ps3' as
the commit log subject prefix.  Also, please try to keep the
commit log subject to 50 characters or less.

-Geoff