From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Boris Brezillon <bbrezillon@kernel.org>
Cc: linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] i3c: master: Use struct_size() helper
Date: Fri, 31 May 2019 12:35:32 -0500 [thread overview]
Message-ID: <20190531173532.GA7141@embeddedor> (raw)
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes, in particular in the
context in which this code is being used.
So, replace the following form:
sizeof(*defslvs) + ((ndevs - 1) * sizeof(struct i3c_ccc_dev_desc))
with:
struct_size(defslvs, slaves, ndevs - 1)
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/i3c/master.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index b9d2b88928e1..923b04052038 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -924,9 +924,8 @@ int i3c_master_defslvs_locked(struct i3c_master_controller *master)
ndevs++;
defslvs = i3c_ccc_cmd_dest_init(&dest, I3C_BROADCAST_ADDR,
- sizeof(*defslvs) +
- ((ndevs - 1) *
- sizeof(struct i3c_ccc_dev_desc)));
+ struct_size(defslvs, slaves,
+ ndevs - 1));
if (!defslvs)
return -ENOMEM;
--
2.21.0
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next reply other threads:[~2019-05-31 17:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-31 17:35 Gustavo A. R. Silva [this message]
2019-06-01 8:19 ` [PATCH] i3c: master: Use struct_size() helper Boris Brezillon
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