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virtio_console: Get rid of unneeded temporary variable

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When compiling a kernel with GCC using `make W=1` with CONFIG_WERROR=y
(which is default nowadays), the build fails:

drivers/char/virtio_console.c:1427:9: note: ‘snprintf’ output between 9 and 27 bytes into a destination of size 16

Indeed, GCC can't see the limits of the variables that are in use.
Fix this by using dev_name() of the newly created device that is
luckily the same as the string used for the DebugFS node name.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Amit Shah <amit@kernel.org>
Link: https://lore.kernel.org/r/20250210095946.4122771-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2025-02-10 11:59:45 +02:00 • committed by Greg Kroah-Hartman
parent 790b2f242a
commit 17f18e04a1
1 changed files with 1 additions and 4 deletions
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5
drivers/char/virtio_console.c
View file

@ -1321,7 +1321,6 @@ static void send_sigio_to_port(struct port *port)
static int add_port(struct ports_device *portdev, u32 id)
{
char debugfs_name[16];
struct port *port;
dev_t devt;
int err;
@ -1424,9 +1423,7 @@ static int add_port(struct ports_device *portdev, u32 id)
* Finally, create the debugfs file that we can use to
* inspect a port's state at any time
*/
snprintf(debugfs_name, sizeof(debugfs_name), "vport%up%u",
port->portdev->vdev->index, id);
port->debugfs_file = debugfs_create_file(debugfs_name, 0444,
port->debugfs_file = debugfs_create_file(dev_name(port->dev), 0444,
pdrvdata.debugfs_dir,
port, &port_debugfs_fops);
return 0;