Messages in this thread Patch in this message | | | Date | Tue, 6 Apr 2010 10:56:35 +0200 | From | Bruno Prémont <> | Subject | Re: [PATCH mmotm] hid-picolcd: depends on LCD_CLASS_DEVICE |
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On Tue, 6 Apr 2010 10:40:06 +0200 Jiri Kosina <jkosina@suse.cz> wrote: > > [ adding Bruno to CC ] > > On Mon, 5 Apr 2010, Randy Dunlap wrote: > > > From: Randy Dunlap <randy.dunlap@oracle.com> > > > > HID_PICOLCD should depend on LCD_CLASS_DEVICE, otherwise the > > build fails when HID_PICOLCD=y and LCD_CLASS_DEVICE=m: > > > > hid-picolcd.c:(.text+0x84523f): undefined reference to `lcd_device_unregister' > > hid-picolcd.c:(.text+0x8478ab): undefined reference to `lcd_device_register' > > hid-picolcd.c:(.text+0x84c15f): undefined reference to `lcd_device_unregister'
That is weird, the
#if defined(CONFIG_LCD_CLASS_DEVICE) || defined(CONFIG_LCD_CLASS_DEVICE_MODULE) feature support code #else empty stubs #endif
blocks should have prevented LCD_CLASS support from being built if it was not enabled in configuration.
Do you have the .config matching your build?
When I did my test-build with LCD support enabled/disabled I didn't get any linker errors as those mentioned above.
Thanks, Bruno
> > Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> > > --- > > drivers/hid/Kconfig | 1 + > > 1 file changed, 1 insertion(+) > > > > --- mmotm-2010-0405-1609.orig/drivers/hid/Kconfig > > +++ mmotm-2010-0405-1609/drivers/hid/Kconfig > > @@ -265,6 +265,7 @@ config HID_PETALYNX > > config HID_PICOLCD > > tristate "PicoLCD (graphic version)" > > depends on USB_HID > > + depends on LCD_CLASS_DEVICE > > select FB_DEFERRED_IO if FB > > select FB_SYS_FILLRECT if FB > > select FB_SYS_COPYAREA if FB > > Thanks Randy. We'll have to take care of the other dependencies as well > though (CONFIG_LCD_CLASS_DEVICE, CONFIG_LEDS_CLASS). >
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