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wl12xx: fix DMA-API-related warnings

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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>
This commit is contained in:
Mircea Gherzan 2012-03-17 18:41:53 +01:00 committed by Luciano Coelho
parent c56dbd57f3
commit 690142e988
6 changed files with 46 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/wireless/wl12xx/boot.c
View File

@ -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';

25
drivers/net/wireless/wl12xx/cmd.c
View File

@ -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)

10
drivers/net/wireless/wl12xx/event.c
View File

@ -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;

2
drivers/net/wireless/wl12xx/event.h
View File

@ -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);

9
drivers/net/wireless/wl12xx/main.c
View File

@ -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);

3
drivers/net/wireless/wl12xx/wl12xx.h
View File

@ -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;