Char: rio, fix sparse warnings

Add some locks and unlocks to some code paths.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c
index a4f0b1e3e7fa..cfa54361473f 100644
--- a/drivers/char/rio/riotty.c
+++ b/drivers/char/rio/riotty.c
@@ -319,6 +319,7 @@ int riotopen(struct tty_struct *tty, struct file *filp)
                         PortP->State |= RIO_WOPEN;
                         rio_spin_unlock_irqrestore(&PortP->portSem, flags);
                         if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
+                                rio_spin_lock_irqsave(&PortP->portSem, flags);
                                 /*
                                  ** ACTION: verify that this is a good thing
                                  ** to do here. -- ???
@@ -334,6 +335,7 @@ int riotopen(struct tty_struct *tty, struct file *filp)
                                 func_exit();
                                 return -EINTR;
                         }
+                        rio_spin_lock_irqsave(&PortP->portSem, flags);
                 }
                 PortP->State &= ~RIO_WOPEN;
         }
@@ -493,6 +495,7 @@ int riotclose(void *ptr)
 
         if (RIOShortCommand(p, PortP, CLOSE, 1, 0) == RIO_FAIL) {
                 RIOPreemptiveCmd(p, PortP, FCLOSE);
+                rio_spin_lock_irqsave(&PortP->portSem, flags);
                 goto close_end;
         }
 
@@ -508,6 +511,7 @@ int riotclose(void *ptr)
 
                         if (p->RIOHalted) {
                                 RIOClearUp(PortP);
+                                rio_spin_lock_irqsave(&PortP->portSem, flags);
                                 goto close_end;
                         }
                         if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {