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tty: tty_buffer: use struct_size() in tty_buffer_alloc()

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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>
Link: https://lore.kernel.org/r/20230816105530.3335-3-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE) 2023-08-16 12:55:22 +02:00 committed by Greg Kroah-Hartman
parent d4d13ff3ac
commit 46bc78c81b
1 changed files with 1 additions and 2 deletions
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3
drivers/tty/tty_buffer.c
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@ -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;