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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2010-08-12 17:16:00 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-10-21 01:04:48 -0200
commit6c2d4dd139de417d18151b98c157aa35387038a3 (patch)
tree747e5076eced841d914895e19e66c0743cf10484 /include/media
parent7a569f524dd36806b995c844f29e28ff40c444b2 (diff)
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V4L/DVB: V4L2: avoid name conflicts in macros
"sd" and "err" are too common names to be used in macros for local variables. Prefix them with an underscore to avoid name clashing. [mchehab@redhat.com: whitespace cleanups] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Reviewed-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-device.h57
1 files changed, 39 insertions, 18 deletions
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 8bcbd7a0271..6648036b728 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -101,46 +101,67 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd);
/* Call the specified callback for all subdevs matching the condition.
Ignore any errors. Note that you cannot add or delete a subdev
while walking the subdevs list. */
-#define __v4l2_device_call_subdevs(v4l2_dev, cond, o, f, args...) \
+#define __v4l2_device_call_subdevs_p(v4l2_dev, sd, cond, o, f, args...) \
do { \
- struct v4l2_subdev *sd; \
+ list_for_each_entry((sd), &(v4l2_dev)->subdevs, list) \
+ if ((cond) && (sd)->ops->o && (sd)->ops->o->f) \
+ (sd)->ops->o->f((sd) , ##args); \
+ } while (0)
+
+#define __v4l2_device_call_subdevs(v4l2_dev, cond, o, f, args...) \
+ do { \
+ struct v4l2_subdev *__sd; \
\
- list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) \
- if ((cond) && sd->ops->o && sd->ops->o->f) \
- sd->ops->o->f(sd , ##args); \
+ __v4l2_device_call_subdevs_p(v4l2_dev, __sd, cond, o, \
+ f , ##args); \
} while (0)
/* Call the specified callback for all subdevs matching the condition.
If the callback returns an error other than 0 or -ENOIOCTLCMD, then
return with that error code. Note that you cannot add or delete a
subdev while walking the subdevs list. */
-#define __v4l2_device_call_subdevs_until_err(v4l2_dev, cond, o, f, args...) \
+#define __v4l2_device_call_subdevs_until_err_p(v4l2_dev, sd, cond, o, f, args...) \
({ \
- struct v4l2_subdev *sd; \
- long err = 0; \
+ long __err = 0; \
\
- list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) { \
- if ((cond) && sd->ops->o && sd->ops->o->f) \
- err = sd->ops->o->f(sd , ##args); \
- if (err && err != -ENOIOCTLCMD) \
+ list_for_each_entry((sd), &(v4l2_dev)->subdevs, list) { \
+ if ((cond) && (sd)->ops->o && (sd)->ops->o->f) \
+ __err = (sd)->ops->o->f((sd) , ##args); \
+ if (__err && __err != -ENOIOCTLCMD) \
break; \
} \
- (err == -ENOIOCTLCMD) ? 0 : err; \
+ (__err == -ENOIOCTLCMD) ? 0 : __err; \
+})
+
+#define __v4l2_device_call_subdevs_until_err(v4l2_dev, cond, o, f, args...) \
+({ \
+ struct v4l2_subdev *__sd; \
+ __v4l2_device_call_subdevs_until_err_p(v4l2_dev, __sd, cond, o, \
+ f, args...); \
})
/* Call the specified callback for all subdevs matching grp_id (if 0, then
match them all). Ignore any errors. Note that you cannot add or delete
a subdev while walking the subdevs list. */
-#define v4l2_device_call_all(v4l2_dev, grpid, o, f, args...) \
- __v4l2_device_call_subdevs(v4l2_dev, \
- !(grpid) || sd->grp_id == (grpid), o, f , ##args)
+#define v4l2_device_call_all(v4l2_dev, grpid, o, f, args...) \
+ do { \
+ struct v4l2_subdev *__sd; \
+ \
+ __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \
+ !(grpid) || __sd->grp_id == (grpid), o, f , \
+ ##args); \
+ } while (0)
/* Call the specified callback for all subdevs matching grp_id (if 0, then
match them all). If the callback returns an error other than 0 or
-ENOIOCTLCMD, then return with that error code. Note that you cannot
add or delete a subdev while walking the subdevs list. */
#define v4l2_device_call_until_err(v4l2_dev, grpid, o, f, args...) \
- __v4l2_device_call_subdevs_until_err(v4l2_dev, \
- !(grpid) || sd->grp_id == (grpid), o, f , ##args)
+({ \
+ struct v4l2_subdev *__sd; \
+ __v4l2_device_call_subdevs_until_err_p(v4l2_dev, __sd, \
+ !(grpid) || __sd->grp_id == (grpid), o, f , \
+ ##args); \
+})
#endif