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Subjectpull request: wireless 2012-01-04
commit a3657f54f7f0371473d9d734ba1b0d15ddf24286

Dave,

Here are a handful of straggler wireless fixes for 3.2. Included is
a NULL pointer fix for mwifiex, a regression fix for handling rx
header lengths for differnt b43 firmwares in PIO mode, a revert of
a one-liner for Bluetooth HCI that was causing uncomfortable delays
during resume, an ath9k fix for a panic when running in AP mode
with aggregation disabled, an an rtlwifi fix for an annoying WARNING
during suspend/resume.

The Bluetooth fix is a one-liner change of a delay value. The mwifiex,
b43, and ath9k fixes are relatively small and isolated to their
respective drivers. The rtlwifi fix is a bit porky, but it also
limits itself at least to the rtlwifi family.

I was hesitant to include the rtlwifi fix, but settled on inclusion
because it was a product of a recent ginormous thread about the
intersection of firmware loading and suspend/resume. Plus it fixes
a bug report in the Red Hat Bugzilla. :-) If you don't think it is
worthy, let me know and I'll drop it from this release.

Please let me know if there are problems!

John

---
The following changes since commit 405cc2736527bd506fd8f652308b03b2c8a1e8b9:

fix CAN MAINTAINERS SCM tree type (2012-01-03 14:57:43 -0500)

are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless.git for-davem

Amitkumar Karwar (1):
mwifiex: fix crash during simultaneous scan and connect

Guennadi Liakhovetski (1):
b43: fix regression in PIO case

Gustavo F. Padovan (1):
Revert "Bluetooth: Increase HCI reset timeout in hci_dev_do_close"

John W. Linville (2):
Merge branch 'master' of git://git.kernel.org/.../padovan/bluetooth
Merge branch 'master' of git://git.kernel.org/.../linville/wireless into for-davem

Larry Finger (1):
rtl8192cu: Fix WARNING on suspend/resume

Mohammed Shafi Shajakhan (1):
ath9k: Fix kernel panic in AR2427 in AP mode

drivers/net/wireless/ath/ath9k/main.c | 3 +
drivers/net/wireless/b43/pio.c | 16 +++++-
drivers/net/wireless/mwifiex/sta_ioctl.c | 7 ++-
drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c | 1 -
drivers/net/wireless/rtlwifi/rtl8192ce/sw.c | 1 +
drivers/net/wireless/rtlwifi/rtl8192cu/sw.c | 54 +++++++++++++++++---
net/bluetooth/hci_core.c | 2 +-
7 files changed, 70 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index d2348a5..a9c5ae7 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1843,6 +1843,9 @@ static void ath9k_sta_notify(struct ieee80211_hw *hw,
struct ath_softc *sc = hw->priv;
struct ath_node *an = (struct ath_node *) sta->drv_priv;

+ if (!(sc->sc_flags & SC_OP_TXAGGR))
+ return;
+
switch (cmd) {
case STA_NOTIFY_SLEEP:
an->sleeping = true;
diff --git a/drivers/net/wireless/b43/pio.c b/drivers/net/wireless/b43/pio.c
index fcff923..279a53e 100644
--- a/drivers/net/wireless/b43/pio.c
+++ b/drivers/net/wireless/b43/pio.c
@@ -617,9 +617,19 @@ static bool pio_rx_frame(struct b43_pio_rxqueue *q)
const char *err_msg = NULL;
struct b43_rxhdr_fw4 *rxhdr =
(struct b43_rxhdr_fw4 *)wl->pio_scratchspace;
+ size_t rxhdr_size = sizeof(*rxhdr);

BUILD_BUG_ON(sizeof(wl->pio_scratchspace) < sizeof(*rxhdr));
- memset(rxhdr, 0, sizeof(*rxhdr));
+ switch (dev->fw.hdr_format) {
+ case B43_FW_HDR_410:
+ case B43_FW_HDR_351:
+ rxhdr_size -= sizeof(rxhdr->format_598) -
+ sizeof(rxhdr->format_351);
+ break;
+ case B43_FW_HDR_598:
+ break;
+ }
+ memset(rxhdr, 0, rxhdr_size);

/* Check if we have data and wait for it to get ready. */
if (q->rev >= 8) {
@@ -657,11 +667,11 @@ data_ready:

/* Get the preamble (RX header) */
if (q->rev >= 8) {
- b43_block_read(dev, rxhdr, sizeof(*rxhdr),
+ b43_block_read(dev, rxhdr, rxhdr_size,
q->mmio_base + B43_PIO8_RXDATA,
sizeof(u32));
} else {
- b43_block_read(dev, rxhdr, sizeof(*rxhdr),
+ b43_block_read(dev, rxhdr, rxhdr_size,
q->mmio_base + B43_PIO_RXDATA,
sizeof(u16));
}
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index ea4a29b..1679c25 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -55,9 +55,14 @@ int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
{
bool cancel_flag = false;
int status = adapter->cmd_wait_q.status;
- struct cmd_ctrl_node *cmd_queued = adapter->cmd_queued;
+ struct cmd_ctrl_node *cmd_queued;

+ if (!adapter->cmd_queued)
+ return 0;
+
+ cmd_queued = adapter->cmd_queued;
adapter->cmd_queued = NULL;
+
dev_dbg(adapter->dev, "cmd pending\n");
atomic_inc(&adapter->cmd_pending);

diff --git a/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c b/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c
index 950c65a..9fcb478 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c
@@ -227,7 +227,6 @@ int rtl92c_download_fw(struct ieee80211_hw *hw)
u32 fwsize;
enum version_8192c version = rtlhal->version;

- pr_info("Loading firmware file %s\n", rtlpriv->cfg->fw_name);
if (!rtlhal->pfirmware)
return 1;

diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c b/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
index f2aa33d..acf9d14 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
@@ -186,6 +186,7 @@ int rtl92c_init_sw_vars(struct ieee80211_hw *hw)
memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
rtlpriv->rtlhal.fwsize = firmware->size;
release_firmware(firmware);
+ pr_info("rtl8192ce: Loaded firmware file %s\n", rtlpriv->cfg->fw_name);

return 0;
}
diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
index c244f2f..250fd9f 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
@@ -43,6 +43,8 @@
#include "hw.h"
#include <linux/vmalloc.h>
#include <linux/module.h>
+#include <linux/atomic.h>
+#include <linux/types.h>

MODULE_AUTHOR("Georgia <georgia@realtek.com>");
MODULE_AUTHOR("Ziv Huang <ziv_huang@realtek.com>");
@@ -51,6 +53,10 @@ MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Realtek 8192C/8188C 802.11n USB wireless");
MODULE_FIRMWARE("rtlwifi/rtl8192cufw.bin");

+static char *rtl8192cu_firmware; /* pointer to firmware */
+static int firmware_size;
+static atomic_t usage_count;
+
static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
@@ -62,12 +68,21 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
rtlpriv->dm.disable_framebursting = 0;
rtlpriv->dm.thermalvalue = 0;
rtlpriv->dbg.global_debuglevel = rtlpriv->cfg->mod_params->debug;
- rtlpriv->rtlhal.pfirmware = vmalloc(0x4000);
- if (!rtlpriv->rtlhal.pfirmware) {
+
+ if (rtl8192cu_firmware) {
+ /* firmware already loaded - true for suspend/resume
+ * and multiple instances of the device */
+ rtlpriv->rtlhal.pfirmware = rtl8192cu_firmware;
+ rtlpriv->rtlhal.fwsize = firmware_size;
+ return 0;
+ }
+ rtl8192cu_firmware = vzalloc(0x4000);
+ if (!rtl8192cu_firmware) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
("Can't alloc buffer for fw.\n"));
return 1;
}
+
/* request fw */
err = request_firmware(&firmware, rtlpriv->cfg->fw_name,
rtlpriv->io.dev);
@@ -82,9 +97,14 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
release_firmware(firmware);
return 1;
}
- memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
+ pr_info("rtl8192cu: Loaded firmware from file %s\n",
+ rtlpriv->cfg->fw_name);
+ memcpy(rtl8192cu_firmware, firmware->data, firmware->size);
+ firmware_size = firmware->size;
rtlpriv->rtlhal.fwsize = firmware->size;
+ rtlpriv->rtlhal.pfirmware = rtl8192cu_firmware;
release_firmware(firmware);
+ atomic_inc(&usage_count);

return 0;
}
@@ -93,12 +113,30 @@ static void rtl92cu_deinit_sw_vars(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);

- if (rtlpriv->rtlhal.pfirmware) {
- vfree(rtlpriv->rtlhal.pfirmware);
+ atomic_dec(&usage_count);
+ if (!atomic_read(&usage_count) && rtlpriv->rtlhal.pfirmware) {
+ vfree(rtl8192cu_firmware);
+ rtl8192cu_firmware = NULL;
rtlpriv->rtlhal.pfirmware = NULL;
}
}

+#ifdef CONFIG_PM
+static int rtl8192cu_usb_suspend(struct usb_interface *pusb_intf,
+ pm_message_t message)
+{
+ /* Increase usage_count to Save loaded fw across suspend/resume */
+ atomic_inc(&usage_count);
+ return 0;
+}
+
+static int rtl8192cu_usb_resume(struct usb_interface *pusb_intf)
+{
+ atomic_dec(&usage_count); /* after resume, decrease usage count */
+ return 0;
+}
+#endif
+
static struct rtl_hal_ops rtl8192cu_hal_ops = {
.init_sw_vars = rtl92cu_init_sw_vars,
.deinit_sw_vars = rtl92cu_deinit_sw_vars,
@@ -347,9 +385,9 @@ static struct usb_driver rtl8192cu_driver = {
.id_table = rtl8192c_usb_ids,

#ifdef CONFIG_PM
- /* .suspend = rtl_usb_suspend, */
- /* .resume = rtl_usb_resume, */
- /* .reset_resume = rtl8192c_resume, */
+ .suspend = rtl8192cu_usb_suspend,
+ .resume = rtl8192cu_usb_resume,
+ .reset_resume = rtl8192cu_usb_resume,
#endif /* CONFIG_PM */
#ifdef CONFIG_AUTOSUSPEND
.supports_autosuspend = 1,
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index be84ae3..b84458d 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -613,7 +613,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
if (!test_bit(HCI_RAW, &hdev->flags)) {
set_bit(HCI_INIT, &hdev->flags);
__hci_request(hdev, hci_reset_req, 0,
- msecs_to_jiffies(HCI_INIT_TIMEOUT));
+ msecs_to_jiffies(250));
clear_bit(HCI_INIT, &hdev->flags);
}

--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.[unhandled content-type:application/pgp-signature]
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