diff options
| author |   Prarit Bhargava <prarit@redhat.com> | 2013-09-23 09:33:36 -0400 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-03 17:25:16 +1000 |
| commit | e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 (patch) | |
| tree | df7d3fcff80cdb3dce5fe01ca3619828d8e0d1bb /arch | |
| parent | powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table() (diff) | |
| download | linux-dev-e82b89a6f19bae73fb064d1b3dd91fcefbb478f4.tar.xz linux-dev-e82b89a6f19bae73fb064d1b3dd91fcefbb478f4.zip | |
powerpc/vio: Fix modalias_show return values
modalias_show() should return an empty string on error, not -ENODEV.
This causes the following false and annoying error:
> find /sys/devices -name modalias -print0 | xargs -0 cat >/dev/null
cat: /sys/devices/vio/4000/modalias: No such device
cat: /sys/devices/vio/4001/modalias: No such device
cat: /sys/devices/vio/4002/modalias: No such device
cat: /sys/devices/vio/4004/modalias: No such device
cat: /sys/devices/vio/modalias: No such device
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 78a350670de3..d38cc08b16c7 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, const char *cp; dn = dev->of_node; - if (!dn) - return -ENODEV; + if (!dn) { + strcat(buf, "\n"); + return strlen(buf); + } cp = of_get_property(dn, "compatible", NULL); - if (!cp) - return -ENODEV; + if (!cp) { + strcat(buf, "\n"); + return strlen(buf); + } return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp); } |