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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-01-09 00:09:46 +0300
committerBoris Brezillon <bbrezillon@kernel.org>2019-01-15 22:49:33 +0300
commit2037f9d8c242af5d549dd5ba32ff1ec1f49ceaad (patch)
tree5070dcf5a842fc5904ec4d5f6f4365b5ea248855 /drivers/mtd/lpddr
parent04b4c06caf2b810f0ce4822f6611ed35326ca11a (diff)
downloadlinux-2037f9d8c242af5d549dd5ba32ff1ec1f49ceaad.tar.xz
mtd: lpddr: Use struct_size() in kzalloc()
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Diffstat (limited to 'drivers/mtd/lpddr')
-rw-r--r--drivers/mtd/lpddr/qinfo_probe.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mtd/lpddr/qinfo_probe.c b/drivers/mtd/lpddr/qinfo_probe.c
index 69f2112340b1..175bdc3b72f4 100644
--- a/drivers/mtd/lpddr/qinfo_probe.c
+++ b/drivers/mtd/lpddr/qinfo_probe.c
@@ -181,8 +181,8 @@ static struct lpddr_private *lpddr_probe_chip(struct map_info *map)
lpddr.numchips = 1;
numvirtchips = lpddr.numchips * lpddr.qinfo->HWPartsNum;
- retlpddr = kzalloc(sizeof(struct lpddr_private) +
- numvirtchips * sizeof(struct flchip), GFP_KERNEL);
+ retlpddr = kzalloc(struct_size(retlpddr, chips, numvirtchips),
+ GFP_KERNEL);
if (!retlpddr)
return NULL;