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Message-Id: <1448473362-12524-4-git-send-email-mukadr@gmail.com>
Date: Wed, 25 Nov 2015 15:42:41 -0200
From: Mauro Dreissig <mukadr@...il.com>
To: Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
netdev@...r.kernel.org
Cc: Mauro Dreissig <mukadr@...il.com>
Subject: [PATCH v2 3/4] staging: rtl8712: Make error handling check for failure
Make all error handling paths check for failure instead of success
in rtl871x_ioctl_rtl.c, reducing indentation and avoiding else
statements.
Signed-off-by: Mauro Dreissig <mukadr@...il.com>
---
drivers/staging/rtl8712/rtl871x_ioctl_rtl.c | 239 +++++++++++++++-------------
1 file changed, 124 insertions(+), 115 deletions(-)
diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_rtl.c b/drivers/staging/rtl8712/rtl871x_ioctl_rtl.c
index 97596aa..3f1fa12 100644
--- a/drivers/staging/rtl8712/rtl871x_ioctl_rtl.c
+++ b/drivers/staging/rtl8712/rtl871x_ioctl_rtl.c
@@ -53,13 +53,14 @@ uint oid_rt_get_small_packet_crc_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_smallpacket_crcerr;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf =
+ adapter->recvpriv.rx_smallpacket_crcerr;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -69,13 +70,14 @@ uint oid_rt_get_middle_packet_crc_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_middlepacket_crcerr;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf =
+ adapter->recvpriv.rx_middlepacket_crcerr;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -85,13 +87,14 @@ uint oid_rt_get_large_packet_crc_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_largepacket_crcerr;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf =
+ adapter->recvpriv.rx_largepacket_crcerr;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -116,14 +119,14 @@ uint oid_rt_get_rx_total_packet_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_pkts +
- adapter->recvpriv.rx_drop;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf =
+ adapter->recvpriv.rx_pkts + adapter->recvpriv.rx_drop;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -147,13 +150,13 @@ uint oid_rt_get_rx_icv_err_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(uint *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_icv_err;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(uint *)poid_par_priv->information_buf = adapter->recvpriv.rx_icv_err;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -172,18 +175,20 @@ uint oid_rt_get_preamble_mode_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- if (adapter->registrypriv.preamble == PREAMBLE_LONG)
- preamblemode = 0;
- else if (adapter->registrypriv.preamble == PREAMBLE_AUTO)
- preamblemode = 1;
- else if (adapter->registrypriv.preamble == PREAMBLE_SHORT)
- preamblemode = 2;
- *(u32 *)poid_par_priv->information_buf = preamblemode;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ if (adapter->registrypriv.preamble == PREAMBLE_LONG)
+ preamblemode = 0;
+ else if (adapter->registrypriv.preamble == PREAMBLE_AUTO)
+ preamblemode = 1;
+ else if (adapter->registrypriv.preamble == PREAMBLE_SHORT)
+ preamblemode = 2;
+
+ *(u32 *)poid_par_priv->information_buf = preamblemode;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -201,8 +206,10 @@ uint oid_rt_get_channelplan_hdl(struct oid_par_priv *poid_par_priv)
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
+
*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
*(u16 *)poid_par_priv->information_buf = peeprompriv->channel_plan;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -214,7 +221,9 @@ uint oid_rt_set_channelplan_hdl(struct oid_par_priv
if (poid_par_priv->type_of_oid != SET_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
+
peeprompriv->channel_plan = *(u16 *)poid_par_priv->information_buf;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -226,19 +235,21 @@ uint oid_rt_set_preamble_mode_hdl(struct oid_par_priv
if (poid_par_priv->type_of_oid != SET_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- preamblemode = *(u32 *)poid_par_priv->information_buf;
- if (preamblemode == 0)
- adapter->registrypriv.preamble = PREAMBLE_LONG;
- else if (preamblemode == 1)
- adapter->registrypriv.preamble = PREAMBLE_AUTO;
- else if (preamblemode == 2)
- adapter->registrypriv.preamble = PREAMBLE_SHORT;
- *(u32 *)poid_par_priv->information_buf = preamblemode;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ preamblemode = *(u32 *)poid_par_priv->information_buf;
+ if (preamblemode == 0)
+ adapter->registrypriv.preamble = PREAMBLE_LONG;
+ else if (preamblemode == 1)
+ adapter->registrypriv.preamble = PREAMBLE_AUTO;
+ else if (preamblemode == 2)
+ adapter->registrypriv.preamble = PREAMBLE_SHORT;
+
+ *(u32 *)poid_par_priv->information_buf = preamblemode;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -262,13 +273,13 @@ uint oid_rt_get_total_tx_bytes_hdl(struct oid_par_priv
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->xmitpriv.tx_bytes;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf = adapter->xmitpriv.tx_bytes;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -279,14 +290,13 @@ uint oid_rt_get_total_rx_bytes_hdl(struct oid_par_priv
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- *(u32 *)poid_par_priv->information_buf =
- adapter->recvpriv.rx_bytes;
- *poid_par_priv->bytes_rw = poid_par_priv->
- information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ *(u32 *)poid_par_priv->information_buf = adapter->recvpriv.rx_bytes;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -355,15 +365,16 @@ uint oid_rt_supported_wireless_mode_hdl(struct oid_par_priv
if (poid_par_priv->type_of_oid != QUERY_OID)
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len >= sizeof(u32)) {
- ulInfo |= 0x0100; /* WIRELESS_MODE_B */
- ulInfo |= 0x0200; /* WIRELESS_MODE_G */
- ulInfo |= 0x0400; /* WIRELESS_MODE_A */
- *(u32 *) poid_par_priv->information_buf = ulInfo;
- *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
- } else {
+
+ if (poid_par_priv->information_buf_len < sizeof(u32))
return RNDIS_STATUS_INVALID_LENGTH;
- }
+
+ ulInfo |= 0x0100; /* WIRELESS_MODE_B */
+ ulInfo |= 0x0200; /* WIRELESS_MODE_G */
+ ulInfo |= 0x0400; /* WIRELESS_MODE_A */
+ *(u32 *)poid_par_priv->information_buf = ulInfo;
+ *poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
@@ -436,61 +447,57 @@ uint oid_rt_ap_set_passphrase_hdl(struct oid_par_priv *poid_par_priv)
uint oid_rt_pro_rf_write_registry_hdl(struct oid_par_priv*
poid_par_priv)
{
- uint status = RNDIS_STATUS_SUCCESS;
struct _adapter *adapter = poid_par_priv->adapter_context;
if (poid_par_priv->type_of_oid != SET_OID) /* QUERY_OID */
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len ==
- (sizeof(unsigned long) * 3)) {
- if (!r8712_setrfreg_cmd(adapter,
+
+ if (poid_par_priv->information_buf_len != sizeof(unsigned long) * 3)
+ return RNDIS_STATUS_INVALID_LENGTH;
+
+ if (!r8712_setrfreg_cmd(adapter,
*(unsigned char *)poid_par_priv->information_buf,
(unsigned long)(*((unsigned long *)
poid_par_priv->information_buf + 2))))
- status = RNDIS_STATUS_NOT_ACCEPTED;
- } else {
- status = RNDIS_STATUS_INVALID_LENGTH;
- }
- return status;
+ return RNDIS_STATUS_NOT_ACCEPTED;
+
+ return RNDIS_STATUS_SUCCESS;
}
uint oid_rt_pro_rf_read_registry_hdl(struct oid_par_priv *poid_par_priv)
{
- uint status = RNDIS_STATUS_SUCCESS;
struct _adapter *adapter = poid_par_priv->adapter_context;
if (poid_par_priv->type_of_oid != SET_OID) /* QUERY_OID */
return RNDIS_STATUS_NOT_ACCEPTED;
- if (poid_par_priv->information_buf_len == (sizeof(unsigned long) *
- 3)) {
- if (adapter->mppriv.act_in_progress) {
- status = RNDIS_STATUS_NOT_ACCEPTED;
- } else {
- /* init workparam */
- adapter->mppriv.act_in_progress = true;
- adapter->mppriv.workparam.bcompleted = false;
- adapter->mppriv.workparam.act_type = MPT_READ_RF;
- adapter->mppriv.workparam.io_offset = *(unsigned long *)
- poid_par_priv->information_buf;
- adapter->mppriv.workparam.io_value = 0xcccccccc;
-
- /* RegOffsetValue - The offset of RF register to read.
- * RegDataWidth - The data width of RF register to read.
- * RegDataValue - The value to read.
- * RegOffsetValue = *((unsigned long *)InformationBuffer);
- * RegDataWidth = *((unsigned long *)InformationBuffer+1);
- * RegDataValue = *((unsigned long *)InformationBuffer+2);
- */
- if (!r8712_getrfreg_cmd(adapter,
- *(unsigned char *)poid_par_priv->information_buf,
- (unsigned char *)&adapter->mppriv.workparam.
- io_value))
- status = RNDIS_STATUS_NOT_ACCEPTED;
- }
- } else {
- status = RNDIS_STATUS_INVALID_LENGTH;
- }
- return status;
+
+ if (poid_par_priv->information_buf_len != sizeof(unsigned long) * 3)
+ return RNDIS_STATUS_INVALID_LENGTH;
+
+ if (adapter->mppriv.act_in_progress)
+ return RNDIS_STATUS_NOT_ACCEPTED;
+
+ /* init workparam */
+ adapter->mppriv.act_in_progress = true;
+ adapter->mppriv.workparam.bcompleted = false;
+ adapter->mppriv.workparam.act_type = MPT_READ_RF;
+ adapter->mppriv.workparam.io_offset = *(unsigned long *)
+ poid_par_priv->information_buf;
+ adapter->mppriv.workparam.io_value = 0xcccccccc;
+
+ /* RegOffsetValue - The offset of RF register to read.
+ * RegDataWidth - The data width of RF register to read.
+ * RegDataValue - The value to read.
+ * RegOffsetValue = *((unsigned long *)InformationBuffer);
+ * RegDataWidth = *((unsigned long *)InformationBuffer+1);
+ * RegDataValue = *((unsigned long *)InformationBuffer+2);
+ */
+ if (!r8712_getrfreg_cmd(adapter,
+ *(unsigned char *)poid_par_priv->information_buf,
+ (unsigned char *)&adapter->mppriv.workparam.io_value))
+ return RNDIS_STATUS_NOT_ACCEPTED;
+
+ return RNDIS_STATUS_SUCCESS;
}
enum _CONNECT_STATE_ {
@@ -521,8 +528,10 @@ uint oid_rt_get_connect_state_hdl(struct oid_par_priv *poid_par_priv)
ulInfo = ADHOCMODE;
else
ulInfo = NOTASSOCIATED;
+
*(u32 *)poid_par_priv->information_buf = ulInfo;
*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
+
return RNDIS_STATUS_SUCCESS;
}
--
2.6.3
--
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