pcmcia: improve check for same card in slot after resume

During a suspend/resume cycle, an user may change the card in the
PCMCIA/CardBus slot. The pcmcia_core can at least look at the
socket state to check whether it is the same.

For PCMCIA devices, move the detection and handling of such a
change to ds.c.

For CardBus devices, the PCI hotplug interface doesn't offer a "rescan"
facility which also _removes_ devices no longer to be found behind a
bridge. Therefore, remove and re-add all devices unconditionally.

CC: Jesse Barnes <jbarnes@virtuousgeek.org>
CC: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h
index cbfba885eb85..b0ebd11130cc 100644
--- a/include/pcmcia/ss.h
+++ b/include/pcmcia/ss.h
@@ -137,6 +137,7 @@ struct pcmcia_socket {
         spinlock_t                      lock;
         socket_state_t                  socket;
         u_int                           state;
+        u_int                           suspended_state;        /* state before suspend */
         u_short                         functions;
         u_short                         lock_count;
         pccard_mem_map                  cis_mem;