[Bluez-devel] try_to_freeze implicit declaration

[Bluez-devel] try_to_freeze implicit declaration

[Tobias Lorenz]

Hi,

I use linux-2.6.19.2. When trying to compile the snd-bt-sco kernel module, I got the following errors:

<<< snip
root@laptop:/usr/src/downloads/bluetooth-alsa/btsco/kernel# LANG=C make
make[1]: Entering directory `/usr/src/linux-2.6.19'
  CC [M]  /usr/src/downloads/bluetooth-alsa/btsco/kernel/btsco.o
/usr/src/downloads/bluetooth-alsa/btsco/kernel/btsco.c: In function 'snd_card_bt_sco_thread':
/usr/src/downloads/bluetooth-alsa/btsco/kernel/btsco.c:911: warning: implicit declaration of function 'try_to_freeze'
  LD [M]  /usr/src/downloads/bluetooth-alsa/btsco/kernel/snd-bt-sco.o
  Building modules, stage 2.
  MODPOST 1 modules
WARNING: "try_to_freeze" [/usr/src/downloads/bluetooth-alsa/btsco/kernel/snd-bt-sco.ko] undefined!
  CC      /usr/src/downloads/bluetooth-alsa/btsco/kernel/snd-bt-sco.mod.o
  LD [M]  /usr/src/downloads/bluetooth-alsa/btsco/kernel/snd-bt-sco.ko
make[1]: Leaving directory `/usr/src/linux-2.6.19'
<<< snap

This is due to the missing "#include <linux/freezer.h>". I found this by looking at other kernel files using the try_to_freeze function. This following patch corrects the problem:

<<< snip
root@laptop:/usr/src/downloads/bluetooth-alsa/btsco/kernel# cvs diff btsco.c
Index: btsco.c
===================================================================
RCS file: /cvsroot/bluetooth-alsa/btsco/kernel/btsco.c,v
retrieving revision 1.15
diff -r1.15 btsco.c
56a57
> #include <linux/freezer.h>
<<< snap

Bye,
  Toby

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