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pcmcia: also lock fake and cache CIS by ops_mutex

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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>
This commit is contained in:
Dominik Brodowski
2010-01-12 22:05:36 +01:00
parent 6b8e087b86
commit 8680c4b3fa
2 changed files with 23 additions and 1 deletions
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6
drivers/pcmcia/ds.c
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@@ -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);