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author | Andrew Morton | 2008-03-05 00:09:07 +0100 |
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committer | Greg Kroah-Hartman | 2008-03-25 06:33:49 +0100 |
commit | 815d2d50da41f28aae58f5e9b3c61c3094422749 (patch) | |
tree | f5c3a8f1cd676ef7ed76ea6cc96ccf399310f7fb /drivers/base | |
parent | UIO: add pgprot_noncached() to UIO mmap code (diff) | |
download | kernel-qcow2-linux-815d2d50da41f28aae58f5e9b3c61c3094422749.tar.gz kernel-qcow2-linux-815d2d50da41f28aae58f5e9b3c61c3094422749.tar.xz kernel-qcow2-linux-815d2d50da41f28aae58f5e9b3c61c3094422749.zip |
driver core: debug for bad dev_attr_show() return value.
Try to find the culprit who caused
http://bugzilla.kernel.org/show_bug.cgi?id=10150
Cc: <balajirrao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base')
-rw-r--r-- | drivers/base/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 7de543d1d0b4..24198ad01976 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -19,6 +19,7 @@ #include <linux/kdev_t.h> #include <linux/notifier.h> #include <linux/genhd.h> +#include <linux/kallsyms.h> #include <asm/semaphore.h> #include "base.h" @@ -68,6 +69,10 @@ static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr, if (dev_attr->show) ret = dev_attr->show(dev, dev_attr, buf); + if (ret >= (ssize_t)PAGE_SIZE) { + print_symbol("dev_attr_show: %s returned bad count\n", + (unsigned long)dev_attr->show); + } return ret; } |