[lvc-project] [PATCH 2/4] wifi: libertas: use convenient lists to manage SDIO packets
Dmitry Antipov
dmantipov at yandex.ru
Mon Jul 24 11:44:41 MSK 2023
Use convenient lists to manage SDIO packets, adjust
'struct if_sdio_packet', 'struct if_sdio_card' and
related code accordingly.
Signed-off-by: Dmitry Antipov <dmantipov at yandex.ru>
---
.../net/wireless/marvell/libertas/if_sdio.c | 37 +++++++------------
1 file changed, 13 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c
index a35b33e84670..c72081cf8a85 100644
--- a/drivers/net/wireless/marvell/libertas/if_sdio.c
+++ b/drivers/net/wireless/marvell/libertas/if_sdio.c
@@ -101,7 +101,7 @@ MODULE_FIRMWARE("sd8688_helper.bin");
MODULE_FIRMWARE("sd8688.bin");
struct if_sdio_packet {
- struct if_sdio_packet *next;
+ struct list_head list;
u16 nb;
u8 buffer[] __aligned(4);
};
@@ -119,7 +119,7 @@ struct if_sdio_card {
u8 buffer[65536] __attribute__((aligned(4)));
spinlock_t lock;
- struct if_sdio_packet *packets;
+ struct list_head packets;
struct workqueue_struct *workqueue;
struct work_struct packet_worker;
@@ -404,9 +404,10 @@ static void if_sdio_host_to_card_worker(struct work_struct *work)
while (1) {
spin_lock_irqsave(&card->lock, flags);
- packet = card->packets;
+ packet = list_first_entry_or_null(&card->packets,
+ struct if_sdio_packet, list);
if (packet)
- card->packets = packet->next;
+ list_del(&packet->list);
spin_unlock_irqrestore(&card->lock, flags);
if (!packet)
@@ -909,7 +910,7 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
{
int ret;
struct if_sdio_card *card;
- struct if_sdio_packet *packet, *cur;
+ struct if_sdio_packet *packet;
u16 size;
unsigned long flags;
@@ -934,7 +935,6 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
goto out;
}
- packet->next = NULL;
packet->nb = size;
/*
@@ -949,14 +949,7 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
spin_lock_irqsave(&card->lock, flags);
- if (!card->packets)
- card->packets = packet;
- else {
- cur = card->packets;
- while (cur->next)
- cur = cur->next;
- cur->next = packet;
- }
+ list_add_tail(&packet->list, &card->packets);
switch (type) {
case MVMS_CMD:
@@ -1137,7 +1130,7 @@ static int if_sdio_probe(struct sdio_func *func,
struct lbs_private *priv;
int ret, i;
unsigned int model;
- struct if_sdio_packet *packet;
+ struct if_sdio_packet *packet, *tmp;
for (i = 0;i < func->card->num_info;i++) {
if (sscanf(func->card->info[i],
@@ -1178,6 +1171,8 @@ static int if_sdio_probe(struct sdio_func *func,
}
spin_lock_init(&card->lock);
+ INIT_LIST_HEAD(&card->packets);
+
card->workqueue = alloc_workqueue("libertas_sdio", WQ_MEM_RECLAIM, 0);
if (unlikely(!card->workqueue)) {
ret = -ENOMEM;
@@ -1236,11 +1231,8 @@ static int if_sdio_probe(struct sdio_func *func,
cancel_work_sync(&card->packet_worker);
destroy_workqueue(card->workqueue);
err_queue:
- while (card->packets) {
- packet = card->packets;
- card->packets = card->packets->next;
+ list_for_each_entry_safe(packet, tmp, &card->packets, list)
kfree(packet);
- }
kfree(card);
@@ -1250,7 +1242,7 @@ static int if_sdio_probe(struct sdio_func *func,
static void if_sdio_remove(struct sdio_func *func)
{
struct if_sdio_card *card;
- struct if_sdio_packet *packet;
+ struct if_sdio_packet *packet, *tmp;
card = sdio_get_drvdata(func);
@@ -1281,11 +1273,8 @@ static void if_sdio_remove(struct sdio_func *func)
cancel_work_sync(&card->packet_worker);
destroy_workqueue(card->workqueue);
- while (card->packets) {
- packet = card->packets;
- card->packets = card->packets->next;
+ list_for_each_entry_safe(packet, tmp, &card->packets, list)
kfree(packet);
- }
kfree(card);
}
--
2.41.0
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