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authorMircea Gherzan <mgherzan@gmail.com>2012-03-17 18:41:53 +0100
committerLuciano Coelho <coelho@ti.com>2012-04-10 11:14:58 +0200
commit690142e9882679fac4993bbb01582dd1b9440605 (patch)
tree3ad1a00af4fa9c26a8cd526c473d1dee45f1b7a4 /drivers/net/wireless/wl12xx
parentwl12xx: fix race between suspend/resume and recovery (diff)
downloadlinux-690142e9882679fac4993bbb01582dd1b9440605.tar.xz
linux-690142e9882679fac4993bbb01582dd1b9440605.zip
wl12xx: fix DMA-API-related warnings
On the PandaBoard (omap_hsmmc + wl12xx_sdio) with DMA_API_DEBUG: WARNING: at lib/dma-debug.c:930 check_for_stack.part.8+0x7c/0xe0() omap_hsmmc omap_hsmmc.4: DMA-API: device driver maps memory fromstack Signed-off-by: Mircea Gherzan <mgherzan@gmail.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx')
-rw-r--r--drivers/net/wireless/wl12xx/boot.c14
-rw-r--r--drivers/net/wireless/wl12xx/cmd.c25
-rw-r--r--drivers/net/wireless/wl12xx/event.c10
-rw-r--r--drivers/net/wireless/wl12xx/event.h2
-rw-r--r--drivers/net/wireless/wl12xx/main.c9
-rw-r--r--drivers/net/wireless/wl12xx/wl12xx.h3
6 files changed, 46 insertions, 17 deletions
diff --git a/drivers/net/wireless/wl12xx/boot.c b/drivers/net/wireless/wl12xx/boot.c
index 954101d03f06..88d60c40b7e3 100644
--- a/drivers/net/wireless/wl12xx/boot.c
+++ b/drivers/net/wireless/wl12xx/boot.c
@@ -83,14 +83,22 @@ static void wl1271_parse_fw_ver(struct wl1271 *wl)
static void wl1271_boot_fw_version(struct wl1271 *wl)
{
- struct wl1271_static_data static_data;
+ struct wl1271_static_data *static_data;
- wl1271_read(wl, wl->cmd_box_addr, &static_data, sizeof(static_data),
+ static_data = kmalloc(sizeof(*static_data), GFP_DMA);
+ if (!static_data) {
+ __WARN();
+ return;
+ }
+
+ wl1271_read(wl, wl->cmd_box_addr, static_data, sizeof(*static_data),
false);
- strncpy(wl->chip.fw_ver_str, static_data.fw_version,
+ strncpy(wl->chip.fw_ver_str, static_data->fw_version,
sizeof(wl->chip.fw_ver_str));
+ kfree(static_data);
+
/* make sure the string is NULL-terminated */
wl->chip.fw_ver_str[sizeof(wl->chip.fw_ver_str) - 1] = '\0';
diff --git a/drivers/net/wireless/wl12xx/cmd.c b/drivers/net/wireless/wl12xx/cmd.c
index 3414fc11e9ba..82cb90a4a99c 100644
--- a/drivers/net/wireless/wl12xx/cmd.c
+++ b/drivers/net/wireless/wl12xx/cmd.c
@@ -342,8 +342,12 @@ int wl1271_cmd_ext_radio_parms(struct wl1271 *wl)
*/
static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl, u32 mask)
{
- u32 events_vector, event;
+ u32 *events_vector;
+ u32 event;
unsigned long timeout;
+ int ret = 0;
+
+ events_vector = kmalloc(sizeof(*events_vector), GFP_DMA);
timeout = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
@@ -351,21 +355,24 @@ static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl, u32 mask)
if (time_after(jiffies, timeout)) {
wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
(int)mask);
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto out;
}
msleep(1);
/* read from both event fields */
- wl1271_read(wl, wl->mbox_ptr[0], &events_vector,
- sizeof(events_vector), false);
- event = events_vector & mask;
- wl1271_read(wl, wl->mbox_ptr[1], &events_vector,
- sizeof(events_vector), false);
- event |= events_vector & mask;
+ wl1271_read(wl, wl->mbox_ptr[0], events_vector,
+ sizeof(*events_vector), false);
+ event = *events_vector & mask;
+ wl1271_read(wl, wl->mbox_ptr[1], events_vector,
+ sizeof(*events_vector), false);
+ event |= *events_vector & mask;
} while (!event);
- return 0;
+out:
+ kfree(events_vector);
+ return ret;
}
static int wl1271_cmd_wait_for_event(struct wl1271 *wl, u32 mask)
diff --git a/drivers/net/wireless/wl12xx/event.c b/drivers/net/wireless/wl12xx/event.c
index 60e6f27566aa..96f06a89c2a9 100644
--- a/drivers/net/wireless/wl12xx/event.c
+++ b/drivers/net/wireless/wl12xx/event.c
@@ -98,8 +98,9 @@ static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
}
-static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
+static int wl1271_event_process(struct wl1271 *wl)
{
+ struct event_mailbox *mbox = wl->mbox;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
u32 vector;
@@ -289,7 +290,6 @@ void wl1271_event_mbox_config(struct wl1271 *wl)
int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
{
- struct event_mailbox mbox;
int ret;
wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
@@ -298,11 +298,11 @@ int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
return -EINVAL;
/* first we read the mbox descriptor */
- wl1271_read(wl, wl->mbox_ptr[mbox_num], &mbox,
- sizeof(struct event_mailbox), false);
+ wl1271_read(wl, wl->mbox_ptr[mbox_num], wl->mbox,
+ sizeof(*wl->mbox), false);
/* process the descriptor */
- ret = wl1271_event_process(wl, &mbox);
+ ret = wl1271_event_process(wl);
if (ret < 0)
return ret;
diff --git a/drivers/net/wireless/wl12xx/event.h b/drivers/net/wireless/wl12xx/event.h
index 057d193d3525..8acba0d43976 100644
--- a/drivers/net/wireless/wl12xx/event.h
+++ b/drivers/net/wireless/wl12xx/event.h
@@ -132,6 +132,8 @@ struct event_mailbox {
u8 reserved_8[9];
} __packed;
+struct wl1271;
+
int wl1271_event_unmask(struct wl1271 *wl);
void wl1271_event_mbox_config(struct wl1271 *wl);
int wl1271_event_handle(struct wl1271 *wl, u8 mbox);
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 13820437806e..7618eb73cb33 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -5375,8 +5375,17 @@ static struct ieee80211_hw *wl1271_alloc_hw(void)
goto err_dummy_packet;
}
+ wl->mbox = kmalloc(sizeof(*wl->mbox), GFP_DMA);
+ if (!wl->mbox) {
+ ret = -ENOMEM;
+ goto err_fwlog;
+ }
+
return hw;
+err_fwlog:
+ free_page((unsigned long)wl->fwlog);
+
err_dummy_packet:
dev_kfree_skb(wl->dummy_packet);
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 749a15a75d38..82802d1c0782 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -34,6 +34,7 @@
#include "conf.h"
#include "ini.h"
+#include "event.h"
#define WL127X_FW_NAME_MULTI "ti-connectivity/wl127x-fw-4-mr.bin"
#define WL127X_FW_NAME_SINGLE "ti-connectivity/wl127x-fw-4-sr.bin"
@@ -416,6 +417,8 @@ struct wl1271 {
/* Hardware recovery work */
struct work_struct recovery_work;
+ struct event_mailbox *mbox;
+
/* The mbox event mask */
u32 event_mask;