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[PATCH 7/8] powerpc/nvram: Improve size determinations in three functions

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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 19 Jan 2017 17:15:30 +0100

Replace the specification of data structures by references for local
variables as the parameter for the operator "sizeof" to make
the corresponding size determination a bit safer.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 arch/powerpc/kernel/nvram_64.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 7af1baaaf01b..ed54147e3c60 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -207,8 +207,7 @@ int nvram_write_os_partition(struct nvram_os_partition *part,
 
 	tmp_index = part->index;
 
-	rc = ppc_md.nvram_write((char *)&info, sizeof(struct err_log_info),
-				&tmp_index);
+	rc = ppc_md.nvram_write((char *)&info, sizeof(info), &tmp_index);
 	if (rc <= 0) {
 		pr_err("%s: Failed nvram_write (%d)\n", __func__, rc);
 		return rc;
@@ -244,9 +243,7 @@ int nvram_read_partition(struct nvram_os_partition *part, char *buff,
 	tmp_index = part->index;
 
 	if (part->os_partition) {
-		rc = ppc_md.nvram_read((char *)&info,
-					sizeof(struct err_log_info),
-					&tmp_index);
+		rc = ppc_md.nvram_read((char *)&info, sizeof(info), &tmp_index);
 		if (rc <= 0) {
 			pr_err("%s: Failed nvram_read (%d)\n", __func__, rc);
 			return rc;
@@ -1175,7 +1172,7 @@ int __init nvram_scan_partitions(void)
 			       "detected: 0-length partition\n");
 			goto out;
 		}
-		tmp_part = kmalloc(sizeof(struct nvram_partition), GFP_KERNEL);
+		tmp_part = kmalloc(sizeof(*tmp_part), GFP_KERNEL);
 		err = -ENOMEM;
 		if (!tmp_part)
 			goto out;
-- 
2.11.0

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[PATCH 0/8] PowerPC-NVRAM: Fine-tuning for some function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 18:00 +0100
  [PATCH 7/8] powerpc/nvram: Improve size determinations in three  functions SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 18:10 +0100
  [PATCH 3/8] powerpc/nvram: Move an assignment for the variable "ret"  in dev_nvram_write() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 18:10 +0100
    Re: [PATCH 3/8] powerpc/nvram: Move an assignment for the variable  "ret" in dev_nvram_write() Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2017-01-20 01:30 +0100
      Re: powerpc/nvram: Move an assignment for the variable "ret" in  dev_nvram_write() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-20 08:10 +0100
        Re: powerpc/nvram: Move an assignment for the variable "ret" in  dev_nvram_write() Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2017-01-20 22:00 +0100
  [PATCH 6/8] powerpc/nvram: Delete three error messages for a failed  memory allocation SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 18:10 +0100
  [PATCH 8/8] powerpc/nvram: Move an assignment for the variable "err"  in nvram_scan_partitions() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 18:40 +0100
  [PATCH 5/8] powerpc/nvram: Return directly after a failed kmalloc()  in dev_nvram_read() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-19 21:50 +0100

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