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authorRyan Mallon <ryan@bluewatersys.com>2007-09-06 21:32:42 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:52:27 -0400
commit28de0b36be2a4e7fb0ba7c9a77d61aeb229b27c0 (patch)
treef1aaa2fa6af4c1d58bb3d17483e3684e0390b889 /drivers/net/wireless/libertas
parent6f05cbe5882e8b0fc5a984313cbb14ce7741411b (diff)
[LIBERTAS]: fix interrupts in CF driver
The following patch fixes the tx transmit timeout problem, which is caused by the interrupts being incorrectly check and masked. The patch moves the interrupt masking code so that interrupts are enabled only when the driver is registered and only disabled when the driver is unregistered. Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wireless/libertas')
-rw-r--r--drivers/net/wireless/libertas/if_cs.c33
1 files changed, 19 insertions, 14 deletions
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 364da4cac214..e74ec5c309be 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -248,22 +248,26 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
248 lbs_deb_enter(LBS_DEB_CS); 248 lbs_deb_enter(LBS_DEB_CS);
249 249
250 int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE); 250 int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE);
251 switch (int_cause) { 251 if(int_cause == 0x0) {
252 case 0x0000: 252 /* Not for us */
253 /* not for us */
254 return IRQ_NONE; 253 return IRQ_NONE;
255 case 0xffff: 254
256 /* if one reads junk, then probably the card was removed */ 255 } else if(int_cause == 0xffff) {
256 /* Read in junk, the card has probably been removed */
257 card->priv->adapter->surpriseremoved = 1; 257 card->priv->adapter->surpriseremoved = 1;
258 break; 258
259 case IF_CS_H_IC_TX_OVER: 259 } else {
260 if (card->priv->adapter->connect_status == LIBERTAS_CONNECTED) 260 if(int_cause & IF_CS_H_IC_TX_OVER) {
261 netif_wake_queue(card->priv->dev); 261 card->priv->dnld_sent = DNLD_RES_RECEIVED;
262 /* fallthrought */ 262 if (!card->priv->adapter->cur_cmd)
263 default: 263 wake_up_interruptible(&card->priv->waitq);
264
265 if (card->priv->adapter->connect_status == LIBERTAS_CONNECTED)
266 netif_wake_queue(card->priv->dev);
267 }
268
264 /* clear interrupt */ 269 /* clear interrupt */
265 if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause & IF_CS_C_IC_MASK); 270 if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause & IF_CS_C_IC_MASK);
266 if_cs_disable_ints(card);
267 } 271 }
268 272
269 libertas_interrupt(card->priv->dev); 273 libertas_interrupt(card->priv->dev);
@@ -652,7 +656,6 @@ static int if_cs_get_int_status(wlan_private *priv, u8 *ireg)
652 if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause); 656 if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause);
653 657
654 *ireg = if_cs_read16(card, IF_CS_C_STATUS) & IF_CS_C_S_MASK; 658 *ireg = if_cs_read16(card, IF_CS_C_STATUS) & IF_CS_C_S_MASK;
655 if_cs_enable_ints(card);
656 659
657 if (!*ireg) 660 if (!*ireg)
658 goto sbi_get_int_status_exit; 661 goto sbi_get_int_status_exit;
@@ -841,7 +844,6 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
841 p_dev->irq.AssignedIRQ, p_dev->io.BasePort1, 844 p_dev->irq.AssignedIRQ, p_dev->io.BasePort1,
842 p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1); 845 p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1);
843 846
844 if_cs_enable_ints(card);
845 847
846 /* Load the firmware early, before calling into libertas.ko */ 848 /* Load the firmware early, before calling into libertas.ko */
847 ret = if_cs_prog_helper(card); 849 ret = if_cs_prog_helper(card);
@@ -874,6 +876,8 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
874 goto out3; 876 goto out3;
875 } 877 }
876 878
879 if_cs_enable_ints(card);
880
877 /* And finally bring the card up */ 881 /* And finally bring the card up */
878 if (libertas_start_card(priv) != 0) { 882 if (libertas_start_card(priv) != 0) {
879 lbs_pr_err("could not activate card\n"); 883 lbs_pr_err("could not activate card\n");
@@ -909,6 +913,7 @@ static void if_cs_detach(struct pcmcia_device *p_dev)
909 913
910 libertas_stop_card(card->priv); 914 libertas_stop_card(card->priv);
911 libertas_remove_card(card->priv); 915 libertas_remove_card(card->priv);
916 if_cs_disable_ints(card);
912 if_cs_release(p_dev); 917 if_cs_release(p_dev);
913 kfree(card); 918 kfree(card);
914 919