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Patch "tty: serial: msm: Fix module autoload" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Feb 23, 2017

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This is a note to let you know that I've just added the patch titled

tty: serial: msm: Fix module autoload

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
tty-serial-msm-fix-module-autoload.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From abe81f3b8ed2996e1712d26d38ff6b73f582c616 Mon Sep 17 00:00:00 2001

From: Javier Martinez Canillas <[email protected]>
Date: Mon, 2 Jan 2017 11:57:20 -0300
Subject: tty: serial: msm: Fix module autoload

From: Javier Martinez Canillas <[email protected]>

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
---
 drivers/tty/serial/msm_serial.c |    1 +
 1 file changed, 1 insertion(+)
drivers/tty/serial/msm_serial.c +1 -0
@@ -1615,6 +1615,7 @@ static const struct of_device_id msm_mat
 	{ .compatible = "qcom,msm-uartdm" },
 	{}
 };
+MODULE_DEVICE_TABLE(of, msm_match_table);
 
 static struct platform_driver msm_platform_driver = {
 	.remove = msm_serial_remove,

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/tty-serial-msm-fix-module-autoload.patch