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authorEric Rannaud <eric.rannaud@gmail.com>2007-03-30 22:23:12 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-27 10:57:29 -0700
commitbf62456eb91f3d2ef0736081583d09b0b3c8b7ea (patch)
tree851c2559ae11835e19763b7c7c54393f0ae0d5f6 /sound/aoa
parentbdc4960a0b4831a24276b65f1f7afdfc57f2f5cf (diff)
downloadlinux-bf62456eb91f3d2ef0736081583d09b0b3c8b7ea.tar.gz
uevent: use add_uevent_var() instead of open coding it
Make use of add_uevent_var() instead of (often incorrectly) open coding it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound/aoa')
-rw-r--r--sound/aoa/soundbus/core.c80
1 files changed, 32 insertions, 48 deletions
diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c
index 47b3e3768df..418a98a10c7 100644
--- a/sound/aoa/soundbus/core.c
+++ b/sound/aoa/soundbus/core.c
@@ -61,9 +61,9 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp,
{
struct soundbus_dev * soundbus_dev;
struct of_device * of;
- char *scratch, *compat, *compat2;
- int i = 0;
- int length, cplen, cplen2, seen = 0;
+ char *compat;
+ int retval = 0, i = 0, length = 0;
+ int cplen, seen = 0;
if (!dev)
return -ENODEV;
@@ -75,63 +75,47 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp,
of = &soundbus_dev->ofdev;
/* stuff we want to pass to /sbin/hotplug */
- envp[i++] = scratch = buffer;
- length = scnprintf (scratch, buffer_size, "OF_NAME=%s", of->node->name);
- ++length;
- buffer_size -= length;
- if ((buffer_size <= 0) || (i >= num_envp))
- return -ENOMEM;
- scratch += length;
-
- envp[i++] = scratch;
- length = scnprintf (scratch, buffer_size, "OF_TYPE=%s", of->node->type);
- ++length;
- buffer_size -= length;
- if ((buffer_size <= 0) || (i >= num_envp))
- return -ENOMEM;
- scratch += length;
+ retval = add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_NAME=%s", of->node->name);
+ if (retval)
+ return retval;
+
+ retval = add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_TYPE=%s", of->node->type);
+ if (retval)
+ return retval;
/* Since the compatible field can contain pretty much anything
* it's not really legal to split it out with commas. We split it
* up using a number of environment variables instead. */
compat = (char *) get_property(of->node, "compatible", &cplen);
- compat2 = compat;
- cplen2= cplen;
while (compat && cplen > 0) {
- envp[i++] = scratch;
- length = scnprintf (scratch, buffer_size,
- "OF_COMPATIBLE_%d=%s", seen, compat);
- ++length;
- buffer_size -= length;
- if ((buffer_size <= 0) || (i >= num_envp))
- return -ENOMEM;
- scratch += length;
- length = strlen (compat) + 1;
- compat += length;
- cplen -= length;
- seen++;
+ int tmp = length;
+ retval = add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_COMPATIBLE_%d=%s", seen, compat);
+ if (retval)
+ return retval;
+ compat += length - tmp;
+ cplen -= length - tmp;
+ seen += 1;
}
- envp[i++] = scratch;
- length = scnprintf (scratch, buffer_size, "OF_COMPATIBLE_N=%d", seen);
- ++length;
- buffer_size -= length;
- if ((buffer_size <= 0) || (i >= num_envp))
- return -ENOMEM;
- scratch += length;
-
- envp[i++] = scratch;
- length = scnprintf (scratch, buffer_size, "MODALIAS=%s",
- soundbus_dev->modalias);
-
- buffer_size -= length;
- if ((buffer_size <= 0) || (i >= num_envp))
- return -ENOMEM;
+ retval = add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "OF_COMPATIBLE_N=%d", seen);
+ if (retval)
+ return retval;
+ retval = add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "MODALIAS=%s", soundbus_dev->modalias);
envp[i] = NULL;
- return 0;
+ return retval;
}
static int soundbus_device_remove(struct device *dev)