[PATCH 1/3] staging: r8188eu: handle errors from ReadAdapterInfo8188EU

From: Martin Kaiser
Date: Sat Jul 30 2022 - 10:40:09 EST


Update ReadAdapterInfo8188EU to return 0 for success or a negative
error code. If rtw_read8 fails, we can just relay the error it returns.

Update rtw_usb_if1_init to check the return value from
ReadAdapterInfo8188EU. For now, rtw_usb_if1_init does not yet pass errors
from ReadAdapterInfo8188EU on to its caller.

Suggested-by: Pavel Skripkin <paskripkin@xxxxxxxxx>
Signed-off-by: Martin Kaiser <martin@xxxxxxxxx>
---
drivers/staging/r8188eu/hal/usb_halinit.c | 7 ++++---
drivers/staging/r8188eu/include/hal_intf.h | 2 +-
drivers/staging/r8188eu/os_dep/usb_intf.c | 3 ++-
3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c
index ff074d246dab..efb529bb4c8a 100644
--- a/drivers/staging/r8188eu/hal/usb_halinit.c
+++ b/drivers/staging/r8188eu/hal/usb_halinit.c
@@ -922,7 +922,7 @@ static void Hal_EfuseParseMACAddr_8188EU(struct adapter *adapt, u8 *hwinfo, bool
}
}

-void ReadAdapterInfo8188EU(struct adapter *Adapter)
+int ReadAdapterInfo8188EU(struct adapter *Adapter)
{
struct eeprom_priv *eeprom = &Adapter->eeprompriv;
struct led_priv *ledpriv = &Adapter->ledpriv;
@@ -933,13 +933,13 @@ void ReadAdapterInfo8188EU(struct adapter *Adapter)
/* check system boot selection */
res = rtw_read8(Adapter, REG_9346CR, &eeValue);
if (res)
- return;
+ return res;

eeprom->bautoload_fail_flag = !(eeValue & EEPROM_EN);

efuse_buf = kmalloc(EFUSE_MAP_LEN_88E, GFP_KERNEL);
if (!efuse_buf)
- return;
+ return -ENOMEM;
memset(efuse_buf, 0xFF, EFUSE_MAP_LEN_88E);

if (!(eeValue & BOOT_FROM_EEPROM) && !eeprom->bautoload_fail_flag) {
@@ -961,6 +961,7 @@ void ReadAdapterInfo8188EU(struct adapter *Adapter)

ledpriv->bRegUseLed = true;
kfree(efuse_buf);
+ return 0;
}

void UpdateHalRAMask8188EUsb(struct adapter *adapt, u32 mac_id, u8 rssi_level)
diff --git a/drivers/staging/r8188eu/include/hal_intf.h b/drivers/staging/r8188eu/include/hal_intf.h
index ab6856d8a090..3ed5b7e031cd 100644
--- a/drivers/staging/r8188eu/include/hal_intf.h
+++ b/drivers/staging/r8188eu/include/hal_intf.h
@@ -11,7 +11,7 @@
typedef s32 (*c2h_id_filter)(u8 id);

void rtl8188eu_interface_configure(struct adapter *adapt);
-void ReadAdapterInfo8188EU(struct adapter *Adapter);
+int ReadAdapterInfo8188EU(struct adapter *Adapter);
void rtl8188eu_init_default_value(struct adapter *adapt);
void rtl8188e_SetHalODMVar(struct adapter *Adapter, void *pValue1, bool bSet);
u32 rtl8188eu_InitPowerOn(struct adapter *adapt);
diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index cc2b44f60c46..e1a0447fd1e7 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -332,7 +332,8 @@ static struct adapter *rtw_usb_if1_init(struct dvobj_priv *dvobj,
rtl8188eu_interface_configure(padapter);

/* step read efuse/eeprom data and get mac_addr */
- ReadAdapterInfo8188EU(padapter);
+ if (ReadAdapterInfo8188EU(padapter) < 0)
+ goto handle_dualmac;

/* step 5. */
if (rtw_init_drv_sw(padapter) == _FAIL)
--
2.30.2