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staging: rtl8192u: fix incorrect mask and shift on u8 data

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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@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Ian King 2017-07-21 14:42:52 +01:00 committed by Greg Kroah-Hartman
parent ce2b0f561c
commit d8acde4ddb
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/rtl8192u/r819xU_cmdpkt.c
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@ -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;