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From: Javier Martinez Canillas <javier@osg.samsung.com>
To: linux-kernel@vger.kernel.org
Cc: Javier Martinez Canillas <javier@osg.samsung.com>,
	Dan Williams <dan.j.williams@intel.com>,
	dmaengine@vger.kernel.org, Vinod Koul <vinod.koul@intel.com>
Subject: [PATCH] dmaengine: fsl_raid: Fix module autoload
Date: Wed, 19 Oct 2016 17:32:33 -0300	[thread overview]
Message-ID: <1476909154-6305-1-git-send-email-javier@osg.samsung.com> (raw)

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/dma/fsl_raid.ko | grep alias
$

After this patch:

$ modinfo drivers/dma/fsl_raid.ko | grep alias
alias:          of:N*T*Cfsl,raideng-v1.0C*
alias:          of:N*T*Cfsl,raideng-v1.0

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

 drivers/dma/fsl_raid.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c
index db2f9e1653a2..90d29f90acfb 100644
--- a/drivers/dma/fsl_raid.c
+++ b/drivers/dma/fsl_raid.c
@@ -881,6 +881,7 @@ static struct of_device_id fsl_re_ids[] = {
 	{ .compatible = "fsl,raideng-v1.0", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, fsl_re_ids);
 
 static struct platform_driver fsl_re_driver = {
 	.driver = {
-- 
2.7.4

             reply	other threads:[~2016-10-19 20:32 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-19 20:32 Javier Martinez Canillas [this message]
2016-11-14  3:05 ` [PATCH] dmaengine: fsl_raid: Fix module autoload Vinod Koul

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