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| author |   Alexander Sverdlin <alexander.sverdlin@nokia.com> | 2018-07-13 17:01:19 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-16 11:56:22 +0200 |
| commit | c58caaab3bf87a6470c1a4641ea7fa5192e12bdd (patch) | |
| tree | 180c022421ae2e9dc671d70e3247bed64ce52d7f | |
| parent | serial: 8250: of: Correct of_platform_serial_setup() error handling (diff) | |
| download | linux-dev-c58caaab3bf87a6470c1a4641ea7fa5192e12bdd.tar.xz linux-dev-c58caaab3bf87a6470c1a4641ea7fa5192e12bdd.zip | |
serial: 8250: of: Defer probe on missing IRQ
If the IRQ controller is not yet probed do not proceed with irq=0,
try to defer the probe.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250_of.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c index 863e86b9a424..af8beefe9b5c 100644 --- a/drivers/tty/serial/8250/8250_of.c +++ b/drivers/tty/serial/8250/8250_of.c @@ -144,6 +144,10 @@ static int of_platform_serial_setup(struct platform_device *ofdev, port->line = ret; port->irq = irq_of_parse_and_map(np, 0); + if (!port->irq) { + ret = -EPROBE_DEFER; + goto err_unprepare; + } info->rst = devm_reset_control_get_optional_shared(&ofdev->dev, NULL); if (IS_ERR(info->rst)) { |