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| author |   James Morris <james.l.morris@oracle.com> | 2014-07-17 02:10:27 +1000 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2014-07-17 02:10:27 +1000 |
| commit | bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0 (patch) | |
| tree | dee9f8b31f3d6d2fb141541da88e1cc1329b017e /arch/powerpc/platforms/powernv/opal-msglog.c | |
| parent | Merge commit 'v3.15' into next (diff) | |
| parent | Linux 3.16-rc5 (diff) | |
| download | linux-dev-bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0.tar.xz linux-dev-bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0.zip | |
Sync with the changes pushed by Serge in the last merge window.
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal-msglog.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-msglog.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-msglog.c b/arch/powerpc/platforms/powernv/opal-msglog.c index 1bb25b952504..44ed78af1a0d 100644 --- a/arch/powerpc/platforms/powernv/opal-msglog.c +++ b/arch/powerpc/platforms/powernv/opal-msglog.c @@ -37,7 +37,8 @@ static ssize_t opal_msglog_read(struct file *file, struct kobject *kobj, { struct memcons *mc = bin_attr->private; const char *conbuf; - size_t ret, first_read = 0; + ssize_t ret; + size_t first_read = 0; uint32_t out_pos, avail; if (!mc) @@ -69,6 +70,9 @@ static ssize_t opal_msglog_read(struct file *file, struct kobject *kobj, to += first_read; count -= first_read; pos -= avail; + + if (count <= 0) + goto out; } /* Sanity check. The firmware should not do this to us. */ |