[PATCH] staging: rtl8192u: fix incorrect mask and shift on u8 data
Colin King
colin.king at canonical.com
Fri Jul 21 13:42:52 UTC 2017
From: Colin Ian King <colin.king at canonical.com>
The cfg_action bit comes from the high bit of pmsg[4] so the
current mask and shift are in correct and always result in
zero. Fix this by using the correct mask and shif to get the
correct cfg_action bit value.
Detected by CoverityScan, CID#142890 ("Operands don't affect result")
Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
drivers/staging/rtl8192u/r819xU_cmdpkt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8192u/r819xU_cmdpkt.c b/drivers/staging/rtl8192u/r819xU_cmdpkt.c
index 87ab3ba760fc..ae9a4f1ac8fd 100644
--- a/drivers/staging/rtl8192u/r819xU_cmdpkt.c
+++ b/drivers/staging/rtl8192u/r819xU_cmdpkt.c
@@ -294,7 +294,7 @@ static void cmpk_handle_query_config_rx(struct net_device *dev, u8 *pmsg)
* windows OS. So we have to read the content byte by byte or transfer
* endian type before copy the message copy.
*/
- rx_query_cfg.cfg_action = (pmsg[4] & 0x80000000) >> 31;
+ rx_query_cfg.cfg_action = (pmsg[4] & 0x80) >> 7;
rx_query_cfg.cfg_type = (pmsg[4] & 0x60) >> 5;
rx_query_cfg.cfg_size = (pmsg[4] & 0x18) >> 3;
rx_query_cfg.cfg_page = (pmsg[6] & 0x0F) >> 0;
--
2.11.0
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