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Subject[023/102] ath6kl: cache firmware
3.0-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Kalle Valo <kvalo@qca.qualcomm.com>

commit b42a7b1bc7c0f535dfe35b2c934f239c60bb8d30 upstream.

Drivers should not request firmware during resume. Fix ath6kl to
cache the firmware instead.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/staging/ath6kl/os/linux/ar6000_drv.c | 49 +++++++++++++------
drivers/staging/ath6kl/os/linux/include/ar6000_drv.h | 9 +++
2 files changed, 43 insertions(+), 15 deletions(-)

--- a/drivers/staging/ath6kl/os/linux/ar6000_drv.c
+++ b/drivers/staging/ath6kl/os/linux/ar6000_drv.c
@@ -954,9 +954,13 @@ ar6000_transfer_bin_file(struct ar6_soft
const char *filename;
const struct firmware *fw_entry;
u32 fw_entry_size;
+ u8 **buf;
+ size_t *buf_len;

switch (file) {
case AR6K_OTP_FILE:
+ buf = &ar->fw_otp;
+ buf_len = &ar->fw_otp_len;
if (ar->arVersion.target_ver == AR6003_REV1_VERSION) {
filename = AR6003_REV1_OTP_FILE;
} else if (ar->arVersion.target_ver == AR6003_REV2_VERSION) {
@@ -970,6 +974,8 @@ ar6000_transfer_bin_file(struct ar6_soft
break;

case AR6K_FIRMWARE_FILE:
+ buf = &ar->fw;
+ buf_len = &ar->fw_len;
if (ar->arVersion.target_ver == AR6003_REV1_VERSION) {
filename = AR6003_REV1_FIRMWARE_FILE;
} else if (ar->arVersion.target_ver == AR6003_REV2_VERSION) {
@@ -1028,6 +1034,8 @@ ar6000_transfer_bin_file(struct ar6_soft
break;

case AR6K_PATCH_FILE:
+ buf = &ar->fw_patch;
+ buf_len = &ar->fw_patch_len;
if (ar->arVersion.target_ver == AR6003_REV1_VERSION) {
filename = AR6003_REV1_PATCH_FILE;
} else if (ar->arVersion.target_ver == AR6003_REV2_VERSION) {
@@ -1041,6 +1049,8 @@ ar6000_transfer_bin_file(struct ar6_soft
break;

case AR6K_BOARD_DATA_FILE:
+ buf = &ar->fw_data;
+ buf_len = &ar->fw_data_len;
if (ar->arVersion.target_ver == AR6003_REV1_VERSION) {
filename = AR6003_REV1_BOARD_DATA_FILE;
} else if (ar->arVersion.target_ver == AR6003_REV2_VERSION) {
@@ -1057,23 +1067,29 @@ ar6000_transfer_bin_file(struct ar6_soft
AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Unknown file type: %d\n", file));
return A_ERROR;
}
- if ((A_REQUEST_FIRMWARE(&fw_entry, filename, ((struct device *)ar->osDevInfo.pOSDevice))) != 0)
- {
- AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to get %s\n", filename));
- return A_ENOENT;
+
+ if (*buf == NULL) {
+ if ((A_REQUEST_FIRMWARE(&fw_entry, filename, ((struct device *)ar->osDevInfo.pOSDevice))) != 0) {
+ AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to get %s\n", filename));
+ return A_ENOENT;
+ }
+
+ *buf = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+ *buf_len = fw_entry->size;
+ A_RELEASE_FIRMWARE(fw_entry);
}

#ifdef SOFTMAC_FILE_USED
- if (file==AR6K_BOARD_DATA_FILE && fw_entry->data) {
- ar6000_softmac_update(ar, (u8 *)fw_entry->data, fw_entry->size);
+ if (file==AR6K_BOARD_DATA_FILE && *buf_len) {
+ ar6000_softmac_update(ar, *buf, *buf_len);
}
#endif


- fw_entry_size = fw_entry->size;
+ fw_entry_size = *buf_len;

/* Load extended board data for AR6003 */
- if ((file==AR6K_BOARD_DATA_FILE) && (fw_entry->data)) {
+ if ((file==AR6K_BOARD_DATA_FILE) && *buf) {
u32 board_ext_address;
u32 board_ext_data_size;
u32 board_data_size;
@@ -1089,14 +1105,13 @@ ar6000_transfer_bin_file(struct ar6_soft
AR_DEBUG_PRINTF(ATH_DEBUG_INFO, ("Board extended Data download address: 0x%x\n", board_ext_address));

/* check whether the target has allocated memory for extended board data and file contains extended board data */
- if ((board_ext_address) && (fw_entry->size == (board_data_size + board_ext_data_size))) {
+ if ((board_ext_address) && (*buf_len == (board_data_size + board_ext_data_size))) {
u32 param;

- status = BMIWriteMemory(ar->arHifDevice, board_ext_address, (u8 *)(fw_entry->data + board_data_size), board_ext_data_size);
+ status = BMIWriteMemory(ar->arHifDevice, board_ext_address, (u8 *)(*buf + board_data_size), board_ext_data_size);

if (status) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("BMI operation failed: %d\n", __LINE__));
- A_RELEASE_FIRMWARE(fw_entry);
return A_ERROR;
}

@@ -1110,17 +1125,16 @@ ar6000_transfer_bin_file(struct ar6_soft
}

if (compressed) {
- status = BMIFastDownload(ar->arHifDevice, address, (u8 *)fw_entry->data, fw_entry_size);
+ status = BMIFastDownload(ar->arHifDevice, address, *buf, fw_entry_size);
} else {
- status = BMIWriteMemory(ar->arHifDevice, address, (u8 *)fw_entry->data, fw_entry_size);
+ status = BMIWriteMemory(ar->arHifDevice, address, *buf, fw_entry_size);
}

if (status) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("BMI operation failed: %d\n", __LINE__));
- A_RELEASE_FIRMWARE(fw_entry);
return A_ERROR;
}
- A_RELEASE_FIRMWARE(fw_entry);
+
return 0;
}

@@ -2088,6 +2102,11 @@ ar6000_destroy(struct net_device *dev, u
ar6000_remove_ap_interface();
#endif /*CONFIG_AP_VIRTUAL_ADAPTER_SUPPORT */

+ kfree(ar->fw_otp);
+ kfree(ar->fw);
+ kfree(ar->fw_patch);
+ kfree(ar->fw_data);
+
AR_DEBUG_PRINTF(ATH_DEBUG_INFO,("-ar6000_destroy \n"));
}

--- a/drivers/staging/ath6kl/os/linux/include/ar6000_drv.h
+++ b/drivers/staging/ath6kl/os/linux/include/ar6000_drv.h
@@ -651,6 +651,15 @@ struct ar6_softc {
void *arApDev;
#endif
u8 arAutoAuthStage;
+
+ u8 *fw_otp;
+ size_t fw_otp_len;
+ u8 *fw;
+ size_t fw_len;
+ u8 *fw_patch;
+ size_t fw_patch_len;
+ u8 *fw_data;
+ size_t fw_data_len;
};

#ifdef CONFIG_AP_VIRTUAL_ADAPTER_SUPPORT



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