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| author | Ingo Molnar <mingo@elte.hu> | 2010-01-29 09:24:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-29 10:36:22 +0100 |
| commit | ae7f6711d6231c9ba54feb5ba9856c3775e482f8 (patch) | |
| tree | 89070c82204b2503348e4fd6c51d25a169375545 /drivers/s390/char/vmcp.c | |
| parent | perf session: Create kernel maps in the constructor (diff) | |
| parent | hw_breakpoints: Release the bp slot if arch_validate_hwbkpt_settings() fails. (diff) | |
| download | linux-ae7f6711d6231c9ba54feb5ba9856c3775e482f8.tar.xz linux-ae7f6711d6231c9ba54feb5ba9856c3775e482f8.zip | |
Merge branch 'perf/urgent' into perf/core
Merge reason: We want to queue up a dependent patch. Also update to
later -rc's.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/s390/char/vmcp.c')
| -rw-r--r-- | drivers/s390/char/vmcp.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index a6087cec55b4..921dcda77676 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -19,6 +19,7 @@ #include <linux/kernel.h> #include <linux/miscdevice.h> #include <linux/module.h> +#include <asm/compat.h> #include <asm/cpcmd.h> #include <asm/debug.h> #include <asm/uaccess.h> @@ -139,21 +140,26 @@ vmcp_write(struct file *file, const char __user *buff, size_t count, static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct vmcp_session *session; + int __user *argp; int temp; session = (struct vmcp_session *)file->private_data; + if (is_compat_task()) + argp = compat_ptr(arg); + else + argp = (int __user *)arg; if (mutex_lock_interruptible(&session->mutex)) return -ERESTARTSYS; switch (cmd) { case VMCP_GETCODE: temp = session->resp_code; mutex_unlock(&session->mutex); - return put_user(temp, (int __user *)arg); + return put_user(temp, argp); case VMCP_SETBUF: free_pages((unsigned long)session->response, get_order(session->bufsize)); session->response=NULL; - temp = get_user(session->bufsize, (int __user *)arg); + temp = get_user(session->bufsize, argp); if (get_order(session->bufsize) > 8) { session->bufsize = PAGE_SIZE; temp = -EINVAL; @@ -163,7 +169,7 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case VMCP_GETSIZE: temp = session->resp_size; mutex_unlock(&session->mutex); - return put_user(temp, (int __user *)arg); + return put_user(temp, argp); default: mutex_unlock(&session->mutex); return -ENOIOCTLCMD; |