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| author | Arnd Bergmann <arnd@arndb.de> | 2017-10-05 15:05:24 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-10-13 13:00:42 +0300 |
| commit | a39644b235c1a45f84d6e16603cacb93740ed2d4 (patch) | |
| tree | 599f4b68b7d5a39ed91b013b8c99fb980bf64b03 /drivers/net/wireless/rsi/rsi_mgmt.h | |
| parent | ef81e8e9dbbb7f8348f3a62a6ab05e7aea33ea35 (diff) | |
| download | linux-a39644b235c1a45f84d6e16603cacb93740ed2d4.tar.xz | |
rsi: fix integer overflow warning
gcc produces a harmless warning about a recently introduced
signed integer overflow:
drivers/net/wireless/rsi/rsi_91x_hal.c: In function 'rsi_prepare_mgmt_desc':
include/uapi/linux/swab.h:13:15: error: integer overflow in expression [-Werror=overflow]
(((__u16)(x) & (__u16)0x00ffU) << 8) | \
~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
include/uapi/linux/swab.h:104:2: note: in expansion of macro '___constant_swab16'
___constant_swab16(x) : \
^~~~~~~~~~~~~~~~~~
include/uapi/linux/byteorder/big_endian.h:34:43: note: in expansion of macro '__swab16'
#define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
^~~~~~~~
include/linux/byteorder/generic.h:89:21: note: in expansion of macro '__cpu_to_le16'
#define cpu_to_le16 __cpu_to_le16
^~~~~~~~~~~~~
drivers/net/wireless/rsi/rsi_91x_hal.c:136:3: note: in expansion of macro 'cpu_to_le16'
cpu_to_le16((tx_params->vap_id << RSI_DESC_VAP_ID_OFST) &
^~~~~~~~~~~
The problem is that the 'mask' value is a signed integer that gets
turned into a negative number when truncated to 16 bits. Making it
an unsigned constant avoids this.
Fixes: eac4eed3224b ("rsi: tx and rx path enhancements for p2p mode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/rsi/rsi_mgmt.h')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_mgmt.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/rsi/rsi_mgmt.h b/drivers/net/wireless/rsi/rsi_mgmt.h index b9d0802c1b0f..e21723013f8d 100644 --- a/drivers/net/wireless/rsi/rsi_mgmt.h +++ b/drivers/net/wireless/rsi/rsi_mgmt.h @@ -189,7 +189,7 @@ IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) -#define RSI_DESC_VAP_ID_MASK 0xC000 +#define RSI_DESC_VAP_ID_MASK 0xC000u #define RSI_DESC_VAP_ID_OFST 14 #define RSI_DATA_DESC_MAC_BBP_INFO BIT(0) #define RSI_DATA_DESC_NO_ACK_IND BIT(9) |