pcmcia: also lock fake and cache CIS by ops_mutex
Specifically,
struct list_head cis_cache;
size_t fake_cis_len;
u8 *fake_cis;
are protected.
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 0ab4fe0..4f7308d 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -1241,12 +1241,16 @@
s->pcmcia_state.present = 0;
pcmcia_card_remove(skt, NULL);
handle_event(skt, event);
+ mutex_lock(&s->ops_mutex);
destroy_cis_cache(s);
+ mutex_unlock(&s->ops_mutex);
break;
case CS_EVENT_CARD_INSERTION:
s->pcmcia_state.present = 1;
+ mutex_lock(&s->ops_mutex);
destroy_cis_cache(s); /* to be on the safe side... */
+ mutex_unlock(&s->ops_mutex);
pcmcia_card_add(skt);
handle_event(skt, event);
break;
@@ -1259,9 +1263,11 @@
dev_dbg(&skt->dev, "cis mismatch - different card\n");
/* first, remove the card */
ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH);
+ mutex_lock(&s->ops_mutex);
destroy_cis_cache(skt);
kfree(skt->fake_cis);
skt->fake_cis = NULL;
+ mutex_unlock(&s->ops_mutex);
/* now, add the new card */
ds_event(skt, CS_EVENT_CARD_INSERTION,
CS_EVENT_PRI_LOW);