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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-12-10 10:06:25 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-12-12 22:29:49 +0100 |
| commit | 82cbd568bc5aa4c70f2a694f169d39ddef3b1aba (patch) | |
| tree | 43ab29e0d4c9809724600db8b7dc0033c84fb52f /arch/parisc | |
| parent | parisc: Enhance CPU detection code on PAT machines (diff) | |
| download | linux-82cbd568bc5aa4c70f2a694f169d39ddef3b1aba.tar.xz linux-82cbd568bc5aa4c70f2a694f169d39ddef3b1aba.zip | |
parisc: perf: return -EFAULT on error
The copy_from_user() returns the number of bytes remaining to be copied
but we want to return -EFAULT if it's non-zero.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/perf.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index 518f4f5f1f43..6eabce62463b 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -301,7 +301,6 @@ static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t static ssize_t perf_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - int err; size_t image_size; uint32_t image_type; uint32_t interface_type; @@ -320,8 +319,8 @@ static ssize_t perf_write(struct file *file, const char __user *buf, size_t coun if (count != sizeof(uint32_t)) return -EIO; - if ((err = copy_from_user(&image_type, buf, sizeof(uint32_t))) != 0) - return err; + if (copy_from_user(&image_type, buf, sizeof(uint32_t))) + return -EFAULT; /* Get the interface type and test type */ interface_type = (image_type >> 16) & 0xffff; |