These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / fs / pstore / pmsg.c

diff --git a/kernel/fs/pstore/pmsg.c b/kernel/fs/pstore/pmsg.c
index feb5dd2..7de20cd 100644 (file)
--- a/kernel/fs/pstore/pmsg.c
+++ b/kernel/fs/pstore/pmsg.c
@@ -37,6 +37,8 @@ static ssize_t write_pmsg(struct file *file, const char __user *buf,
        if (buffer_size > PMSG_MAX_BOUNCE_BUFFER_SIZE)
                buffer_size = PMSG_MAX_BOUNCE_BUFFER_SIZE;
        buffer = vmalloc(buffer_size);
+       if (!buffer)
+               return -ENOMEM;
 
        mutex_lock(&pmsg_lock);
        for (i = 0; i < count; ) {
@@ -112,3 +114,10 @@ err_class:
 err:
        return;
 }
+
+void pstore_unregister_pmsg(void)
+{
+       device_destroy(pmsg_class, MKDEV(pmsg_major, 0));
+       class_destroy(pmsg_class);
+       unregister_chrdev(pmsg_major, PMSG_NAME);
+}