[PATCH 3.10 151/268] tty: serial: msm: Fix module autoload

Willy Tarreau
2017-06-19T19:10:49Z

From: Javier Martinez Canillas <javier@osg.samsung.com>

commit abe81f3b8ed2996e1712d26d38ff6b73f582c616 upstream.

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/tty/serial/msm_serial.ko | grep alias
$

After this patch:

$ modinfo drivers/tty/serial/msm_serial.ko | grep alias
alias: of:N*T*Cqcom,msm-uartdmC*
alias: of:N*T*Cqcom,msm-uartdm
alias: of:N*T*Cqcom,msm-uartC*
alias: of:N*T*Cqcom,msm-uart

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
drivers/tty/serial/msm_serial.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index b11e997..876ce88 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -930,6 +930,7 @@ static struct of_device_id msm_match_table[] = {
{ .compatible = "qcom,msm-uart" },
{}
};
+MODULE_DEVICE_TABLE(of, msm_match_table);

static struct platform_driver msm_platform_driver = {
.remove = msm_serial_remove,
--
2.8.0.rc2.1.gbe9624a