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[S390] fix broken proc interface for sclp_async 

This patch now allows the use of the proc interface to either activate
or deactivate call home on panic.
e.g.  echo 1 > /proc/sys/kernel/callhome
strict_strtoul() requires _either_'\n\0' _or_ '\0' termination.
This was missing and therefore the interface did not recognise valid input.

Signed-off-by: Hans-Joachim Picht <hans@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Hans-Joachim Picht 2010-03-24 11:49:56 +01:00 committed by Martin Schwidefsky
parent 9c95258c0d
commit 7b26d82f5e
1 changed files with 1 additions and 0 deletions
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drivers/s390/char/sclp_async.c
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@ -84,6 +84,7 @@ static int proc_handler_callhome(struct ctl_table *ctl, int write,
rc = copy_from_user(buf, buffer, sizeof(buf));
if (rc != 0)
return -EFAULT;
buf[len - 1] = '\0';
if (strict_strtoul(buf, 0, &val) != 0)
return -EINVAL;
if (val != 0 && val != 1)