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Date: Thu, 8 Oct 2015 20:14:03 +0200
From: Ondrej Zary <linux@...nbow-software.org>
To: Dan Williams <dcbw@...hat.com>
Cc: linux-wireless@...r.kernel.org,
Kernel development list <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 1/2] airo: Track APList_rid in struct airo_info
Instead of dynamically allocating APList, make it a member of struct
airo_info to always track state of APList_rid.
This simplifies suspend/resume and allows removal of readAPListRid.
Signed-off-by: Ondrej Zary <linux@...nbow-software.org>
---
drivers/net/wireless/airo.c | 57 +++++++++++++++----------------------------
1 file changed, 19 insertions(+), 38 deletions(-)
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index 8ae838d..4ef2f98 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -1231,7 +1231,7 @@ struct airo_info {
dma_addr_t shared_dma;
pm_message_t power;
SsidRid *SSID;
- APListRid *APList;
+ APListRid APList;
#define PCI_SHARED_LEN 2*MPI_MAX_FIDS*PKTSIZE+RIDSIZE
char proc_name[IFNAMSIZ];
@@ -1848,11 +1848,6 @@ static int readStatusRid(struct airo_info *ai, StatusRid *statr, int lock)
return PC4500_readrid(ai, RID_STATUS, statr, sizeof(*statr), lock);
}
-static int readAPListRid(struct airo_info *ai, APListRid *aplr)
-{
- return PC4500_readrid(ai, RID_APLIST, aplr, sizeof(*aplr), 1);
-}
-
static int writeAPListRid(struct airo_info *ai, APListRid *aplr, int lock)
{
return PC4500_writerid(ai, RID_APLIST, aplr, sizeof(*aplr), lock);
@@ -2413,7 +2408,6 @@ void stop_airo_card( struct net_device *dev, int freeres )
kfree(ai->flash);
kfree(ai->rssi);
- kfree(ai->APList);
kfree(ai->SSID);
if (freeres) {
/* PCMCIA frees this stuff, so only for PCI and ISA */
@@ -2809,6 +2803,7 @@ static struct net_device *_init_airo_card( unsigned short irq, int port,
init_waitqueue_head (&ai->thr_wait);
ai->tfm = NULL;
add_airo_dev(ai);
+ ai->APList.len = cpu_to_le16(sizeof(struct APListRid));
if (airo_networks_allocate (ai))
goto err_out_free;
@@ -3852,8 +3847,6 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
tdsRssiRid rssi_rid;
CapabilityRid cap_rid;
- kfree(ai->APList);
- ai->APList = NULL;
kfree(ai->SSID);
ai->SSID = NULL;
// general configuration (read/modify/write)
@@ -5130,31 +5123,31 @@ static void proc_APList_on_close( struct inode *inode, struct file *file ) {
struct proc_data *data = file->private_data;
struct net_device *dev = PDE_DATA(inode);
struct airo_info *ai = dev->ml_priv;
- APListRid APList_rid;
+ APListRid *APList_rid = &ai->APList;
int i;
if ( !data->writelen ) return;
- memset( &APList_rid, 0, sizeof(APList_rid) );
- APList_rid.len = cpu_to_le16(sizeof(APList_rid));
+ memset(APList_rid, 0, sizeof(*APList_rid));
+ APList_rid->len = cpu_to_le16(sizeof(*APList_rid));
for( i = 0; i < 4 && data->writelen >= (i+1)*6*3; i++ ) {
int j;
for( j = 0; j < 6*3 && data->wbuffer[j+i*6*3]; j++ ) {
switch(j%3) {
case 0:
- APList_rid.ap[i][j/3]=
+ APList_rid->ap[i][j/3]=
hex_to_bin(data->wbuffer[j+i*6*3])<<4;
break;
case 1:
- APList_rid.ap[i][j/3]|=
+ APList_rid->ap[i][j/3]|=
hex_to_bin(data->wbuffer[j+i*6*3]);
break;
}
}
}
disable_MAC(ai, 1);
- writeAPListRid(ai, &APList_rid, 1);
+ writeAPListRid(ai, APList_rid, 1);
enable_MAC(ai, 1);
}
@@ -5408,7 +5401,7 @@ static int proc_APList_open( struct inode *inode, struct file *file ) {
struct airo_info *ai = dev->ml_priv;
int i;
char *ptr;
- APListRid APList_rid;
+ APListRid *APList_rid = &ai->APList;
if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
return -ENOMEM;
@@ -5426,13 +5419,12 @@ static int proc_APList_open( struct inode *inode, struct file *file ) {
}
data->on_close = proc_APList_on_close;
- readAPListRid(ai, &APList_rid);
ptr = data->rbuffer;
for( i = 0; i < 4; i++ ) {
// We end when we find a zero MAC
- if ( !*(int*)APList_rid.ap[i] &&
- !*(int*)&APList_rid.ap[i][2]) break;
- ptr += sprintf(ptr, "%pM\n", APList_rid.ap[i]);
+ if ( !*(int*)APList_rid->ap[i] &&
+ !*(int*)&APList_rid->ap[i][2]) break;
+ ptr += sprintf(ptr, "%pM\n", APList_rid->ap[i]);
}
if (i==0) ptr += sprintf(ptr, "Not using specific APs\n");
@@ -5596,15 +5588,10 @@ static int airo_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Cmd cmd;
Resp rsp;
- if (!ai->APList)
- ai->APList = kmalloc(sizeof(APListRid), GFP_KERNEL);
- if (!ai->APList)
- return -ENOMEM;
if (!ai->SSID)
ai->SSID = kmalloc(sizeof(SsidRid), GFP_KERNEL);
if (!ai->SSID)
return -ENOMEM;
- readAPListRid(ai, ai->APList);
readSsidRid(ai, ai->SSID);
memset(&cmd, 0, sizeof(cmd));
/* the lock will be released at the end of the resume callback */
@@ -5652,11 +5639,7 @@ static int airo_pci_resume(struct pci_dev *pdev)
kfree(ai->SSID);
ai->SSID = NULL;
}
- if (ai->APList) {
- writeAPListRid(ai, ai->APList, 0);
- kfree(ai->APList);
- ai->APList = NULL;
- }
+ writeAPListRid(ai, &ai->APList, 0);
writeConfigRid(ai, 0);
enable_MAC(ai, 0);
ai->power = PMSG_ON;
@@ -5954,7 +5937,7 @@ static int airo_set_wap(struct net_device *dev,
struct airo_info *local = dev->ml_priv;
Cmd cmd;
Resp rsp;
- APListRid APList_rid;
+ APListRid *APList_rid = &local->APList;
if (awrq->sa_family != ARPHRD_ETHER)
return -EINVAL;
@@ -5967,11 +5950,11 @@ static int airo_set_wap(struct net_device *dev,
issuecommand(local, &cmd, &rsp);
up(&local->sem);
} else {
- memset(&APList_rid, 0, sizeof(APList_rid));
- APList_rid.len = cpu_to_le16(sizeof(APList_rid));
- memcpy(APList_rid.ap[0], awrq->sa_data, ETH_ALEN);
+ memset(APList_rid, 0, sizeof(*APList_rid));
+ APList_rid->len = cpu_to_le16(sizeof(*APList_rid));
+ memcpy(APList_rid->ap[0], awrq->sa_data, ETH_ALEN);
disable_MAC(local, 1);
- writeAPListRid(local, &APList_rid, 1);
+ writeAPListRid(local, APList_rid, 1);
enable_MAC(local, 1);
}
return 0;
@@ -7505,10 +7488,8 @@ static int airo_config_commit(struct net_device *dev,
* parameters. It's now time to commit them in the card */
disable_MAC(local, 1);
if (test_bit (FLAG_RESET, &local->flags)) {
- APListRid APList_rid;
SsidRid SSID_rid;
- readAPListRid(local, &APList_rid);
readSsidRid(local, &SSID_rid);
if (test_bit(FLAG_MPI,&local->flags))
setup_card(local, dev->dev_addr, 1 );
@@ -7516,7 +7497,7 @@ static int airo_config_commit(struct net_device *dev,
reset_airo_card(dev);
disable_MAC(local, 1);
writeSsidRid(local, &SSID_rid, 1);
- writeAPListRid(local, &APList_rid, 1);
+ writeAPListRid(local, &local->APList, 1);
}
if (down_interruptible(&local->sem))
return -ERESTARTSYS;
--
Ondrej Zary
--
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