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[PATCH 16/18] mtd-cfi_cmdset_0020: Use kmalloc_array() in cfi_staa_setup()

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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 11 Jan 2017 19:33:48 +0100

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kmalloc_array".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data structure by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/mtd/chips/cfi_cmdset_0020.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 94d3eb42c4d5..9cd7b1c6faba 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -184,8 +184,9 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
 	mtd->size = devsize * cfi->numchips;
 
 	mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips;
-	mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info)
-			* mtd->numeraseregions, GFP_KERNEL);
+	mtd->eraseregions = kmalloc_array(mtd->numeraseregions,
+					  sizeof(*mtd->eraseregions),
+					  GFP_KERNEL);
 	if (!mtd->eraseregions) {
 		kfree(cfi->cmdset_priv);
 		kfree(mtd);
-- 
2.11.0

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[PATCH 00/18] MTD-CFI: Fine-tuning for several function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:40 +0100
  [PATCH 03/18] mtd-cfi_cmdset_0001: Add some spaces for better code  readability SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
    Re: [PATCH 03/18] mtd-cfi_cmdset_0001: Add some spaces for better  code readability Dan Carpenter <dan.carpenter@oracle.com> - 2017-01-12 10:30 +0100
  [PATCH 04/18] mtd-cfi_cmdset_0001: Delete an unnecessary variable  initialisation in do_write_oneword() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 07/18] mtd-cfi_cmdset_0001: One function call and an  unnecessary check less in cfi_intelext_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 05/18] mtd-cfi_cmdset_0001: Use common error handling code in  do_write_oneword() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 09/18] mtd-cfi_cmdset_0002: Use kmalloc_array() in  cfi_amdstd_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 11/18] mtd-cfi_cmdset_0002: Rename a jump label in  cfi_amdstd_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 08/18] mtd-cfi_cmdset_0001: Rename a jump label in  cfi_intelext_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 10/18] mtd-cfi_cmdset_0002: One function call less in  cfi_amdstd_setup() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 06/18] mtd-cfi_cmdset_0001: Use kcalloc() in  cfi_intelext_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 21:50 +0100
  [PATCH 14/18] mtd-cfi_cmdset_0002: Use common error handling code in  do_write_oneword() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  [PATCH 16/18] mtd-cfi_cmdset_0020: Use kmalloc_array() in  cfi_staa_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  [PATCH 17/18] mtd-cfi_cmdset_0020: Use common error handling code in  cfi_staa_setup() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  [PATCH 18/18] mtd-cfi_cmdset_0020: Add some spaces for better code  readability SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
    Re: [PATCH 18/18] mtd-cfi_cmdset_0020: Add some spaces for better  code readability Dan Carpenter <dan.carpenter@oracle.com> - 2017-01-12 10:40 +0100
  [PATCH 13/18] mtd-cfi_cmdset_0002: Delete an unnecessary variable  initialisation in do_write_oneword() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  [PATCH 15/18] mtd-cfi_cmdset_0002: Use kcalloc() in cfi_ppb_unlock() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  [PATCH 12/18] mtd-cfi_cmdset_0002: Add some spaces for better code  readability SF Markus Elfring <elfring@users.sourceforge.net> - 2017-01-11 22:00 +0100
  Re: [PATCH 00/18] MTD-CFI: Fine-tuning for several function  implementations Boris Brezillon <boris.brezillon@free-electrons.com> - 2017-01-11 23:00 +0100
  Re: [PATCH 00/18] MTD-CFI: Fine-tuning for several function  implementations Marek Vasut <marek.vasut@gmail.com> - 2017-01-11 23:10 +0100

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