Module: xenomai-head
Branch: master
Commit: bec9c5072c671afc1468d87c6dcaeb0c4405314a
URL:    
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=bec9c5072c671afc1468d87c6dcaeb0c4405314a

Author: Alexis Berlemont <alexis.berlem...@gmail.com>
Date:   Wed Jun 23 21:11:31 2010 +0200

analogy: remove calls of a4l_release/reserve_subd in the core

---

 include/analogy/subdevice.h        |    7 -------
 ksrc/drivers/analogy/buffer.c      |    4 ++--
 ksrc/drivers/analogy/instruction.c |    7 ++++---
 3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/include/analogy/subdevice.h b/include/analogy/subdevice.h
index 5be036b..a81fcb9 100644
--- a/include/analogy/subdevice.h
+++ b/include/analogy/subdevice.h
@@ -284,13 +284,6 @@ a4l_rng_t *a4l_get_rngfeat(a4l_subd_t * sb, int chidx, int 
rngidx);
 int a4l_check_chanlist(a4l_subd_t * subd,
                       unsigned char nb_chan, unsigned int *chans);
 
-static inline int a4l_reserve_subd(a4l_subd_t *subd)
-{
-        return test_and_set_bit(A4L_SUBD_BUSY_NR, &subd->status) ? -EBUSY : 0;
-}
-#define a4l_release_subd(x) clear_bit(A4L_SUBD_BUSY_NR, &((x)->status))
-#define a4l_subd_is_busy(x) (test_bit(A4L_SUBD_BUSY_NR, &((x)->status)))
-
 #define a4l_subd_is_input(x) ((A4L_SUBD_MASK_READ & (x)->flags) != 0)
 /* The following macro considers that a DIO subdevice is firstly an
    output subdevice */
diff --git a/ksrc/drivers/analogy/buffer.c b/ksrc/drivers/analogy/buffer.c
index b8b01d3..f9bcad7 100644
--- a/ksrc/drivers/analogy/buffer.c
+++ b/ksrc/drivers/analogy/buffer.c
@@ -136,7 +136,7 @@ int a4l_setup_buffer(a4l_cxt_t *cxt, a4l_cmd_t *cmd)
                return -EINVAL;
        }
 
-       if (a4l_reserve_subd(buf_desc->subd) < 0) {
+       if (test_and_set_bit(A4L_SUBD_BUSY_NR, &buf_desc->subd->status)) {
                __a4l_err("a4l_setup_buffer: subdevice %d already busy\n",
                          cmd->idx_subd);
                return -EBUSY;
@@ -196,7 +196,7 @@ int a4l_cancel_buffer(a4l_cxt_t *cxt)
 
        a4l_reinit_buffer(buf_desc);
 
-       a4l_release_subd(subd);
+       clear_bit(A4L_SUBD_BUSY_NR, &subd->status);
        subd->buf = NULL;
 
        return err;
diff --git a/ksrc/drivers/analogy/instruction.c 
b/ksrc/drivers/analogy/instruction.c
index 644c40c..1050753 100644
--- a/ksrc/drivers/analogy/instruction.c
+++ b/ksrc/drivers/analogy/instruction.c
@@ -266,9 +266,10 @@ int a4l_do_insn(a4l_cxt_t * cxt, a4l_kinsn_t * dsc)
 
        /* Prevents the subdevice from being used during 
           the following operations */
-       ret = a4l_reserve_subd(subd);
-       if (ret < 0)
+       if (test_and_set_bit(A4L_SUBD_BUSY_NR, &subd->status)) {
+               ret = -EBUSY;
                goto out_do_insn;
+       }
 
        /* Let's the driver-specific code perform the instruction */
        ret = hdlr(subd, dsc);
@@ -281,7 +282,7 @@ int a4l_do_insn(a4l_cxt_t * cxt, a4l_kinsn_t * dsc)
 out_do_insn:
 
        /* Releases the subdevice from its reserved state */
-       a4l_release_subd(subd);
+       clear_bit(A4L_SUBD_BUSY_NR, &subd->status);
 
        return ret;
 }


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