Messages in this thread | | | Date | Mon, 01 Aug 2005 10:50:24 +1000 | From | Shayne O'Connor <> | Subject | spca5xx webcam driver not compiling on 2.6.13-rc4-RT-V0.7.52-07 |
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the spca5xx webcam driver module compiles/installs/runs fine (a few compilation warnings, but nothing much) on vanilla 2.6.x kernels, but won't succeed on one patched with ingo's realtime pre-emption patches.
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[root@localhost spca5xx-20050701]# make Building SPCA5XX driver for 2.5/2.6 kernel. Remember: you must have read/write access to your kernel source tree. make -C /lib/modules/`uname -r`/build SUBDIRS=/home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701 modules make[1]: Entering directory `/home/mrmachine/my_documents/applications/linux/system+admin/linux-2.6.12' CC [M] /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.o In file included from /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.c:763: /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/mr97311.h: In function `pcam_start': /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/mr97311.h:391: warning: ISO C90 forbids mixed declarations and code /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.c: In function `spca5xx_probe': /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.c:8663: error: `SPIN_LOCK_UNLOCKED' undeclared (first use in this function) /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.c:8663: error: (Each undeclared identifier is reported only once /home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.c:8663: error: for each function it appears in.) make[2]: *** [/home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701/drivers/usb/spca5xx.o] Error 1 make[1]: *** [_module_/home/mrmachine/my_documents/applications/linux/video/spca5xx-20050701] Error 2 make[1]: Leaving directory `/home/mrmachine/my_documents/applications/linux/system+admin/linux-2.6.12' make: *** [default] Error 2
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all the warnings up to the error occur on a vanilla kernel compilation, but installs anyway ... i know "SPIN_LOCK_UNLOCKED" has something to do with ingo's patch, so i emailed the spca5xx author to see if he knew what to do:
> Shayne, > Try to change 'SPIN_LOCK_UNLOCKED' by some thing to initialize the spin :) > regards
i'm guessing it's these lines in spca5xx.c that i have to change:
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if (!spca50x_configure (spca50x)) { spca50x->user = 0; init_MUTEX (&spca50x->lock); /* to 1 == available */ init_MUTEX (&spca50x->buf_lock); spca50x->v4l_lock = SPIN_LOCK_UNLOCKED; spca50x->buf_state = BUF_NOT_ALLOCATED; } else { err ("Failed to configure camera"); goto error; }
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i've looked through the archives for some clue as to what to change it to, but being a bit on the newbie side, haven't had any luck ...
please CC me on any replies!
thanx
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