From: Arnd Bergmann <arnd@arndb.de>

Without the CRC_CCITT code, the new greybus driver fails to link:

aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `hdlc_append_tx_u8':
gb-beagleplay.c:(.text+0x158): undefined reference to `crc_ccitt'
aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `gb_tty_receive':
gb-beagleplay.c:(.text+0x5c4): undefined reference to `crc_ccitt'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/greybus/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/greybus/Kconfig b/drivers/greybus/Kconfig
index 033d31dbf3b8..ab81ceceb337 100644
--- a/drivers/greybus/Kconfig
+++ b/drivers/greybus/Kconfig
@@ -20,6 +20,7 @@ if GREYBUS
 config GREYBUS_BEAGLEPLAY
 	tristate "Greybus BeaglePlay driver"
 	depends on SERIAL_DEV_BUS
+	select CRC_CCITT
 	help
 	  Select this option if you have a BeaglePlay where CC1352
 	  co-processor acts as Greybus SVC.
-- 
2.39.2

On 11/8/23 07:34, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> Without the CRC_CCITT code, the new greybus driver fails to link:
> 
> aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `hdlc_append_tx_u8':
> gb-beagleplay.c:(.text+0x158): undefined reference to `crc_ccitt'
> aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `gb_tty_receive':
> gb-beagleplay.c:(.text+0x5c4): undefined reference to `crc_ccitt'
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/greybus/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/greybus/Kconfig b/drivers/greybus/Kconfig
> index 033d31dbf3b8..ab81ceceb337 100644
> --- a/drivers/greybus/Kconfig
> +++ b/drivers/greybus/Kconfig
> @@ -20,6 +20,7 @@ if GREYBUS
>  config GREYBUS_BEAGLEPLAY
>  	tristate "Greybus BeaglePlay driver"
>  	depends on SERIAL_DEV_BUS
> +	select CRC_CCITT
>  	help
>  	  Select this option if you have a BeaglePlay where CC1352
>  	  co-processor acts as Greybus SVC.

Yes, same as my patch:
https://lore.kernel.org/lkml/20231031040909.21201-1-rdunlap@infradead.org/

I expect that Greg just hasn't gotten around to applying new patches/fixes yet.

-- 
~Randy

On Wed, Nov 08, 2023 at 08:12:57AM -0800, Randy Dunlap wrote:
> 
> 
> On 11/8/23 07:34, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@arndb.de>
> > 
> > Without the CRC_CCITT code, the new greybus driver fails to link:
> > 
> > aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `hdlc_append_tx_u8':
> > gb-beagleplay.c:(.text+0x158): undefined reference to `crc_ccitt'
> > aarch64-linux-ld: drivers/greybus/gb-beagleplay.o: in function `gb_tty_receive':
> > gb-beagleplay.c:(.text+0x5c4): undefined reference to `crc_ccitt'
> > 
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > ---
> >  drivers/greybus/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/greybus/Kconfig b/drivers/greybus/Kconfig
> > index 033d31dbf3b8..ab81ceceb337 100644
> > --- a/drivers/greybus/Kconfig
> > +++ b/drivers/greybus/Kconfig
> > @@ -20,6 +20,7 @@ if GREYBUS
> >  config GREYBUS_BEAGLEPLAY
> >  	tristate "Greybus BeaglePlay driver"
> >  	depends on SERIAL_DEV_BUS
> > +	select CRC_CCITT
> >  	help
> >  	  Select this option if you have a BeaglePlay where CC1352
> >  	  co-processor acts as Greybus SVC.
> 
> Yes, same as my patch:
> https://lore.kernel.org/lkml/20231031040909.21201-1-rdunlap@infradead.org/
> 
> I expect that Greg just hasn't gotten around to applying new patches/fixes yet.

Nope, waiting until -rc1 is out, sorry.

greg k-h