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Groups > linux.kernel > #1638243

[PATCH 2/7] staging: typec: fusb302: Fix module autoload

From Guenter Roeck <linux@roeck-us.net>
Newsgroups linux.kernel
Subject [PATCH 2/7] staging: typec: fusb302: Fix module autoload
Date 2017-05-09 18:10 +0200
Message-ID <tFfS1-41K-11@gated-at.bofh.it> (permalink)
References <tFfS1-41K-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Javier Martinez Canillas <javier@dowhile0.org>

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 OF and I2C device ID table entries as module aliases, using the
MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/staging/typec/fusb302/fusb302.ko | grep alias
$

After this patch:

$ modinfo drivers/staging/typec/fusb302/fusb302.ko | grep alias
alias:          of:N*T*Cfcs,fusb302C*
alias:          of:N*T*Cfcs,fusb302
alias:          i2c:typec_fusb302

Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/staging/typec/fusb302/fusb302.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/typec/fusb302/fusb302.c b/drivers/staging/typec/fusb302/fusb302.c
index 2cee9a952c9b..aa460f93a293 100644
--- a/drivers/staging/typec/fusb302/fusb302.c
+++ b/drivers/staging/typec/fusb302/fusb302.c
@@ -1787,11 +1787,13 @@ static const struct of_device_id fusb302_dt_match[] = {
 	{.compatible = "fcs,fusb302"},
 	{},
 };
+MODULE_DEVICE_TABLE(of, fusb302_dt_match);
 
 static const struct i2c_device_id fusb302_i2c_device_id[] = {
 	{"typec_fusb302", 0},
 	{},
 };
+MODULE_DEVICE_TABLE(i2c, fusb302_i2c_device_id);
 
 static const struct dev_pm_ops fusb302_pm_ops = {
 	.suspend = fusb302_pm_suspend,
-- 
2.7.4

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Thread

[PATCH 1/7] staging: typec: tcpci: declare private structure as static Guenter Roeck <linux@roeck-us.net> - 2017-05-09 18:10 +0200
  [PATCH 2/7] staging: typec: fusb302: Fix module autoload Guenter Roeck <linux@roeck-us.net> - 2017-05-09 18:10 +0200
  [PATCH 4/7] staging: typec: tcpm: Drop duplicate PD messages Guenter Roeck <linux@roeck-us.net> - 2017-05-09 18:10 +0200
  [PATCH 3/7] staging: typec: fusb302: Fix chip->vbus_present init value Guenter Roeck <linux@roeck-us.net> - 2017-05-09 18:10 +0200
  [PATCH 5/7] staging: typec: tcpm: Set correct flags in PD request messages Guenter Roeck <linux@roeck-us.net> - 2017-05-09 18:10 +0200
  Re: [PATCH 1/7] staging: typec: tcpci: declare private structure as  static Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-05-09 19:50 +0200
    Re: [PATCH 1/7] staging: typec: tcpci: declare private structure as  static Guenter Roeck <linux@roeck-us.net> - 2017-05-09 23:20 +0200

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