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Message-Id: <20210728091117.6235-1-fmdefrancesco@gmail.com>
Date: Wed, 28 Jul 2021 11:11:17 +0200
From: "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Cc: "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH v2] staging: rtl8723bs: core: Fix incorrect type in assignment
Fix sparse warnings: incorrect type in assignment (different base types).
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
v1 --> v2:
Fix incorrect indentation of the fields of a union. Problem detected by
Greg Kroah-Hartman.
drivers/staging/rtl8723bs/core/rtw_security.c | 31 +++++++++++--------
1 file changed, 18 insertions(+), 13 deletions(-)
diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/staging/rtl8723bs/core/rtw_security.c
index a99f439328f1..8b507f6a447e 100644
--- a/drivers/staging/rtl8723bs/core/rtw_security.c
+++ b/drivers/staging/rtl8723bs/core/rtw_security.c
@@ -35,8 +35,10 @@ const char *security_type_str(u8 value)
*/
void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
{ /* exclude ICV */
-
- unsigned char crc[4];
+ union {
+ __le32 f0;
+ unsigned char f1[4];
+ } crc;
signed int curfragnum, length;
u32 keylength;
@@ -69,18 +71,18 @@ void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len;
- *((__le32 *)crc) = ~crc32_le(~0, payload, length);
+ crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
arc4_setkey(ctx, wepkey, 3 + keylength);
arc4_crypt(ctx, payload, payload, length);
- arc4_crypt(ctx, payload + length, crc, 4);
+ arc4_crypt(ctx, payload + length, crc.f1, 4);
} else {
length = pxmitpriv->frag_len-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len;
- *((__le32 *)crc) = ~crc32_le(~0, payload, length);
+ crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
arc4_setkey(ctx, wepkey, 3 + keylength);
arc4_crypt(ctx, payload, payload, length);
- arc4_crypt(ctx, payload + length, crc, 4);
+ arc4_crypt(ctx, payload + length, crc.f1, 4);
pframe += pxmitpriv->frag_len;
pframe = (u8 *)round_up((SIZE_PTR)(pframe), 4);
@@ -121,7 +123,7 @@ void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe)
arc4_crypt(ctx, payload, payload, length);
/* calculate icv and compare the icv */
- *((u32 *)crc) = le32_to_cpu(~crc32_le(~0, payload, length - 4));
+ *((u32 *)crc) = ~crc32_le(~0, payload, length - 4);
}
}
@@ -464,7 +466,10 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
u32 pnh;
u8 rc4key[16];
u8 ttkey[16];
- u8 crc[4];
+ union {
+ __le32 f0;
+ u8 f1[4];
+ } crc;
u8 hw_hdr_offset = 0;
signed int curfragnum, length;
@@ -506,19 +511,19 @@ u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
if ((curfragnum+1) == pattrib->nr_frags) { /* 4 the last fragment */
length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len;
- *((__le32 *)crc) = ~crc32_le(~0, payload, length);
+ crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
arc4_setkey(ctx, rc4key, 16);
arc4_crypt(ctx, payload, payload, length);
- arc4_crypt(ctx, payload + length, crc, 4);
+ arc4_crypt(ctx, payload + length, crc.f1, 4);
} else {
length = pxmitpriv->frag_len-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len;
- *((__le32 *)crc) = ~crc32_le(~0, payload, length);
+ crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
arc4_setkey(ctx, rc4key, 16);
arc4_crypt(ctx, payload, payload, length);
- arc4_crypt(ctx, payload + length, crc, 4);
+ arc4_crypt(ctx, payload + length, crc.f1, 4);
pframe += pxmitpriv->frag_len;
pframe = (u8 *)round_up((SIZE_PTR)(pframe), 4);
@@ -618,7 +623,7 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
arc4_setkey(ctx, rc4key, 16);
arc4_crypt(ctx, payload, payload, length);
- *((u32 *)crc) = le32_to_cpu(~crc32_le(~0, payload, length - 4));
+ *((u32 *)crc) = ~crc32_le(~0, payload, length - 4);
if (crc[3] != payload[length - 1] || crc[2] != payload[length - 2] ||
crc[1] != payload[length - 3] || crc[0] != payload[length - 4])
--
2.32.0
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