mwifiex: get rid of global user_rmmod flag

bus.remove() callback function is called when user removes this module
from kernel space or ejects the card from the slot. The driver handles
these 2 cases differently. Few commands (FUNC_SHUTDOWN etc.) are sent to
the firmware only for module unload case.

The variable 'user_rmmod' is used to distinguish between these two
scenarios.

This patch checks hardware status and get rid of global variable
user_rmmod.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index ed86c12..ea79e34 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -31,8 +31,6 @@
 #define PCIE_VERSION   "1.0"
 #define DRV_NAME        "Marvell mwifiex PCIe"
 
-static u8 user_rmmod;
-
 static struct mwifiex_if_ops pcie_ops;
 
 static const struct of_device_id mwifiex_pcie_of_match_table[] = {
@@ -284,6 +282,9 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
        struct pcie_service_card *card;
        struct mwifiex_adapter *adapter;
        struct mwifiex_private *priv;
+       const struct mwifiex_pcie_card_reg *reg;
+       u32 fw_status;
+       int ret;
 
        card = pci_get_drvdata(pdev);
 
@@ -295,7 +296,11 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
 
        cancel_work_sync(&card->work);
 
-       if (user_rmmod && !adapter->mfg_mode) {
+       reg = card->pcie.reg;
+       if (reg)
+               ret = mwifiex_read_reg(adapter, reg->fw_status, &fw_status);
+
+       if (fw_status == FIRMWARE_READY_PCIE && !adapter->mfg_mode) {
                mwifiex_deauthenticate_all(adapter);
 
                priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
@@ -310,7 +315,6 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
 
 static void mwifiex_pcie_shutdown(struct pci_dev *pdev)
 {
-       user_rmmod = 1;
        mwifiex_pcie_remove(pdev);
 
        return;
@@ -2874,8 +2878,11 @@ static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter)
        struct pcie_service_card *card = adapter->card;
        struct pci_dev *pdev = card->dev;
        const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
+       int ret;
+       u32 fw_status;
 
-       if (user_rmmod) {
+       ret = mwifiex_read_reg(adapter, reg->fw_status, &fw_status);
+       if (fw_status == FIRMWARE_READY_PCIE) {
                mwifiex_dbg(adapter, INFO,
                            "Clearing driver ready signature\n");
                if (mwifiex_write_reg(adapter, reg->drv_rdy, 0x00000000))
@@ -3187,9 +3194,6 @@ static int mwifiex_pcie_init_module(void)
 
        pr_debug("Marvell PCIe Driver\n");
 
-       /* Clear the flag in case user removes the card. */
-       user_rmmod = 0;
-
        ret = pci_register_driver(&mwifiex_pcie);
        if (ret)
                pr_err("Driver register failed!\n");
@@ -3210,9 +3214,6 @@ static int mwifiex_pcie_init_module(void)
  */
 static void mwifiex_pcie_cleanup_module(void)
 {
-       /* Set the flag as user is removing this module. */
-       user_rmmod = 1;
-
        pci_unregister_driver(&mwifiex_pcie);
 }
 

diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index ba3bc95..0b6ed3f 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -31,21 +31,6 @@
 
 #define SDIO_VERSION   "1.0"
 
-/* The mwifiex_sdio_remove() callback function is called when
- * user removes this module from kernel space or ejects
- * the card from the slot. The driver handles these 2 cases
- * differently.
- * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
- * HS_CANCEL etc.) are sent to the firmware.
- * If the card is removed, there is no need to send these command.
- *
- * The variable 'user_rmmod' is used to distinguish these two
- * scenarios. This flag is initialized as FALSE in case the card
- * is removed, and will be set to TRUE for module removal when
- * module_exit function is called.
- */
-static u8 user_rmmod;
-
 static void mwifiex_sdio_work(struct work_struct *work);
 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
 
@@ -391,6 +376,8 @@ __mwifiex_sdio_remove(struct sdio_func *func)
        struct sdio_mmc_card *card;
        struct mwifiex_adapter *adapter;
        struct mwifiex_private *priv;
+       int ret = 0;
+       u16 firmware_stat;
 
        card = sdio_get_drvdata(func);
        if (!card)
@@ -404,7 +391,8 @@ __mwifiex_sdio_remove(struct sdio_func *func)
 
        mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
 
-       if (user_rmmod && !adapter->mfg_mode) {
+       ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
+       if (firmware_stat == FIRMWARE_READY_SDIO && !adapter->mfg_mode) {
                mwifiex_deauthenticate_all(adapter);
 
                priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
@@ -2724,9 +2712,6 @@ static struct mwifiex_if_ops sdio_ops = {
 static int
 mwifiex_sdio_init_module(void)
 {
-       /* Clear the flag in case user removes the card. */
-       user_rmmod = 0;
-
        return sdio_register_driver(&mwifiex_sdio);
 }
 
@@ -2742,10 +2727,6 @@ mwifiex_sdio_init_module(void)
 static void
 mwifiex_sdio_cleanup_module(void)
 {
-       /* Set the flag as user is removing this module. */
-       user_rmmod = 1;
-       cancel_work_sync(&sdio_work);
-
        sdio_unregister_driver(&mwifiex_sdio);
 }
 

diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index c563160..53881c4 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -22,7 +22,6 @@
 
 #define USB_VERSION    "1.0"
 
-static u8 user_rmmod;
 static struct mwifiex_if_ops usb_ops;
 
 static struct usb_device_id mwifiex_usb_table[] = {
@@ -618,7 +617,7 @@ static void mwifiex_usb_disconnect(struct usb_interface *intf)
        if (!adapter || !adapter->priv_num)
                return;
 
-       if (user_rmmod && !adapter->mfg_mode) {
+       if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) {
                mwifiex_deauthenticate_all(adapter);
 
                mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
@@ -1230,9 +1229,6 @@ static int mwifiex_usb_init_module(void)
  */
 static void mwifiex_usb_cleanup_module(void)
 {
-       /* set the flag as user is removing this module */
-       user_rmmod = 1;
-
        usb_deregister(&mwifiex_usb_driver);
 }