linux-kernel - [PATCH] scsi: ufs-qcom: Fix module autoload

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Message-Id: <1483365898-30166-1-git-send-email-javier@osg.samsung.com>
Date:   Mon,  2 Jan 2017 11:04:58 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Javier Martinez Canillas <javier@....samsung.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Vinayak Holikatti <vinholikatti@...il.com>,
        linux-scsi@...r.kernel.org,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>
Subject: [PATCH] scsi: ufs-qcom: Fix module autoload

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/scsi/ufs/ufs-qcom.ko | grep alias
$

After this patch:

$ modinfo drivers/scsi/ufs/ufs-qcom.ko | grep alias
alias:          of:N*T*Cqcom,ufshcC*
alias:          of:N*T*Cqcom,ufshc

Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
---

 drivers/scsi/ufs/ufs-qcom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index abe617372661..5ff8a6bf6fd3 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1692,6 +1692,7 @@ static const struct of_device_id ufs_qcom_of_match[] = {
 	{ .compatible = "qcom,ufshc"},
 	{},
 };
+MODULE_DEVICE_TABLE(of, ufs_qcom_of_match);
 
 static const struct dev_pm_ops ufs_qcom_pm_ops = {
 	.suspend	= ufshcd_pltfrm_suspend,
-- 
2.7.4