The patch titled
isdn: fix random hard freeze with AVM T1 cards
has been added to the -mm tree. Its filename is
fix-random-hard-freeze-with-avm-t1-cards.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: isdn: fix random hard freeze with AVM T1 cards
From: Karsten Keil <kkeil@xxxxxxx>
This fixes the hard freeze debugged for AVM C4 cards for the AVM T1 cards.
Signed-off-by: Karsten Keil <kkeil@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/isdn/hardware/avm/t1isa.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
diff -puN drivers/isdn/hardware/avm/t1isa.c~fix-random-hard-freeze-with-avm-t1-cards drivers/isdn/hardware/avm/t1isa.c
--- a/drivers/isdn/hardware/avm/t1isa.c~fix-random-hard-freeze-with-avm-t1-cards
+++ a/drivers/isdn/hardware/avm/t1isa.c
@@ -180,8 +180,8 @@ static irqreturn_t t1isa_interrupt(int i
ApplId = (unsigned) b1_get_word(card->port);
MsgLen = t1_get_slice(card->port, card->msgbuf);
- spin_unlock_irqrestore(&card->lock, flags);
if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
+ spin_unlock_irqrestore(&card->lock, flags);
printk(KERN_ERR "%s: incoming packet dropped\n",
card->name);
} else {
@@ -190,7 +190,7 @@ static irqreturn_t t1isa_interrupt(int i
capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
CAPIMSG_NCCI(skb->data),
CAPIMSG_MSGID(skb->data));
-
+ spin_unlock_irqrestore(&card->lock, flags);
capi_ctr_handle_message(ctrl, ApplId, skb);
}
break;
@@ -200,21 +200,17 @@ static irqreturn_t t1isa_interrupt(int i
ApplId = b1_get_word(card->port);
NCCI = b1_get_word(card->port);
WindowSize = b1_get_word(card->port);
- spin_unlock_irqrestore(&card->lock, flags);
-
capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
-
+ spin_unlock_irqrestore(&card->lock, flags);
break;
case RECEIVE_FREE_NCCI:
ApplId = b1_get_word(card->port);
NCCI = b1_get_word(card->port);
- spin_unlock_irqrestore(&card->lock, flags);
-
if (NCCI != 0xffffffff)
capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
-
+ spin_unlock_irqrestore(&card->lock, flags);
break;
case RECEIVE_START:
@@ -333,13 +329,16 @@ static void t1isa_reset_ctr(struct capi_
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned int port = card->port;
+ unsigned long flags;
t1_disable_irq(port);
b1_reset(port);
b1_reset(port);
memset(cinfo->version, 0, sizeof(cinfo->version));
+ spin_lock_irqsave(&card->lock, flags);
capilib_release(&cinfo->ncci_head);
+ spin_unlock_irqrestore(&card->lock, flags);
capi_ctr_reseted(ctrl);
}
@@ -466,29 +465,26 @@ static u16 t1isa_send_message(struct cap
u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
u16 dlen, retval;
+ spin_lock_irqsave(&card->lock, flags);
if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
retval = capilib_data_b3_req(&cinfo->ncci_head,
CAPIMSG_APPID(skb->data),
CAPIMSG_NCCI(skb->data),
CAPIMSG_MSGID(skb->data));
- if (retval != CAPI_NOERROR)
+ if (retval != CAPI_NOERROR) {
+ spin_unlock_irqrestore(&card->lock, flags);
return retval;
-
+ }
dlen = CAPIMSG_DATALEN(skb->data);
- spin_lock_irqsave(&card->lock, flags);
b1_put_byte(port, SEND_DATA_B3_REQ);
t1_put_slice(port, skb->data, len);
t1_put_slice(port, skb->data + len, dlen);
- spin_unlock_irqrestore(&card->lock, flags);
} else {
-
- spin_lock_irqsave(&card->lock, flags);
b1_put_byte(port, SEND_MESSAGE);
t1_put_slice(port, skb->data, len);
- spin_unlock_irqrestore(&card->lock, flags);
}
-
+ spin_unlock_irqrestore(&card->lock, flags);
dev_kfree_skb_any(skb);
return CAPI_NOERROR;
}
_
Patches currently in -mm which might be from kkeil@xxxxxxx are
origin.patch
fix-random-freezes-with-avm-b1-drivers.patch
fix-random-hard-freeze-with-avm-c4-card.patch
fix-random-hard-freeze-with-avm-c4-card-part-2.patch
fix-random-hard-freeze-with-avm-cards-using-b1dma.patch
fix-random-hard-freeze-with-avm-cards-using-b1dma-checkpatch-fixes.patch
fix-random-hard-freeze-with-avm-t1-cards.patch
-
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