From: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
"Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Subject: [PATCH 02/10] tty: tty_buffer: use struct_size() in tty_buffer_alloc()
Date: Wed, 16 Aug 2023 12:55:22 +0200 [thread overview]
Message-ID: <20230816105530.3335-3-jirislaby@kernel.org> (raw)
In-Reply-To: <20230816105530.3335-1-jirislaby@kernel.org>
Now, that tty_buffer::data has the right type, use struct_size() for
size calculation. struct_size() makes the code less error-prone and more
readable.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
---
drivers/tty/tty_buffer.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 684d099cbe11..c94df1a2d7f8 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -177,8 +177,7 @@ static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size)
*/
if (atomic_read(&port->buf.mem_used) > port->buf.mem_limit)
return NULL;
- p = kmalloc(sizeof(struct tty_buffer) + 2 * size,
- GFP_ATOMIC | __GFP_NOWARN);
+ p = kmalloc(struct_size(p, data, 2 * size), GFP_ATOMIC | __GFP_NOWARN);
if (p == NULL)
return NULL;
--
2.41.0
next prev parent reply other threads:[~2023-08-16 10:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-16 10:55 [PATCH 00/10] tty: tty_buffer: cleanup Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 01/10] tty: tty_buffer: switch data type to u8 Jiri Slaby (SUSE)
2023-08-16 10:55 ` Jiri Slaby (SUSE) [this message]
2023-08-16 10:55 ` [PATCH 03/10] tty: tty_buffer: unify tty_insert_flip_string_{fixed_flag,flags}() Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 04/10] tty: tty_buffer: warn if losing flags in __tty_insert_flip_string_flags() Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 05/10] tty: tty_buffer: switch insert functions to size_t Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 06/10] tty: tty_buffer: let tty_prepare_flip_string() return size_t Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 07/10] tty: tty_buffer: use __tty_insert_flip_string_flags() in tty_insert_flip_char() Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 08/10] tty: tty_buffer: better types in __tty_buffer_request_room() Jiri Slaby (SUSE)
2023-08-16 10:55 ` [PATCH 09/10] tty: tty_buffer: initialize variables in initializers already Jiri Slaby (SUSE)
2023-08-22 12:56 ` Greg KH
2023-08-16 10:55 ` [PATCH 10/10] tty: tty_buffer: invert conditions in __tty_buffer_request_room() Jiri Slaby (SUSE)
2023-08-22 12:58 ` [PATCH 00/10] tty: tty_buffer: cleanup Greg KH
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