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authorJavier Martinez Canillas <javier@osg.samsung.com>2017-03-29 09:37:59 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-08 17:48:20 +0200
commit750100a495be63c1db7b97691556d7d9cac7f978 (patch)
treee86f0a9a90be9b51cbc7b5d7218318aa459f7ac3 /drivers/auxdisplay
parente1f990c24d14a80dd9b16ea967c9b76dbba501a3 (diff)
downloadlinux-750100a495be63c1db7b97691556d7d9cac7f978.tar.gz
auxdisplay: img-ascii-lcd: 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/auxdisplay/img-ascii-lcd.ko | grep alias
$

After this patch:

$ modinfo drivers/auxdisplay/img-ascii-lcd.ko | grep alias
alias:          of:N*T*Cmti,sead3-lcdC*
alias:          of:N*T*Cmti,sead3-lcd
alias:          of:N*T*Cmti,malta-lcdC*
alias:          of:N*T*Cmti,malta-lcd
alias:          of:N*T*Cimg,boston-lcdC*
alias:          of:N*T*Cimg,boston-lcd

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/auxdisplay')
-rw-r--r--drivers/auxdisplay/img-ascii-lcd.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/auxdisplay/img-ascii-lcd.c b/drivers/auxdisplay/img-ascii-lcd.c
index 83f1439e57fd..25306fa27251 100644
--- a/drivers/auxdisplay/img-ascii-lcd.c
+++ b/drivers/auxdisplay/img-ascii-lcd.c
@@ -220,6 +220,7 @@ static const struct of_device_id img_ascii_lcd_matches[] = {
 	{ .compatible = "mti,sead3-lcd", .data = &sead3_config },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, img_ascii_lcd_matches);
 
 /**
  * img_ascii_lcd_scroll() - scroll the display by a character