pcmcia: give socket time to power down

Give sockets up to 100ms of additional time to power down.  otherwise we
might generate false warnings with KERN_ERR priority (like in bug #8262).

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Cc: Nils Neumann <nils.neumann@rwth-aachen.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index 7c93a108f9b8..f8b13f0270d7 100644
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -409,6 +409,9 @@ static void socket_shutdown(struct pcmcia_socket *s)
 #endif
         s->functions = 0;
 
+        /* give socket some time to power down */
+        msleep(100);
+
         s->ops->get_status(s, &status);
         if (status & SS_POWERON) {
                 printk(KERN_ERR "PCMCIA: socket %p: *** DANGER *** unable to remove socket power\n", s);