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authorDominik Brodowski <linux@dominikbrodowski.net>2010-01-12 22:05:36 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2010-02-17 17:48:14 +0100
commit8680c4b3faa298dc768c2a78a94a84d89854eca9 (patch)
treefe6faa7b62cf52ce8823027e833d946d11523e4a /drivers/pcmcia/ds.c
parent6b8e087b86c59c3941e125738d30cf38014089e0 (diff)
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>
Diffstat (limited to 'drivers/pcmcia/ds.c')
-rw-r--r--drivers/pcmcia/ds.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 0ab4fe045920..4f7308df22c8 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -1241,12 +1241,16 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
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 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
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);