vme: Fix a possible sleep-in-atomic bug in vme_tsi148

The driver may sleep under a spinlock.
The function call path is:
tsi148_master_write \ tsi148_master_read (acquire the spinlock)
vme_register_error_handler
kmalloc(GFP_KERNEL) --> may sleep

To fix it, GFP_KERNEL is replaced with GFP_ATOMIC.

This bug is found by my static analysis tool(DSAC) and checked by my code review.

Signed-off-by: Jia-Ju Bai <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/vme/vme.c

···
 {
 	struct vme_error_handler *handler;
 
-	handler = kmalloc(sizeof(*handler), GFP_KERNEL);
+	handler = kmalloc(sizeof(*handler), GFP_ATOMIC);
 	if (!handler)
 		return NULL;