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rtlwifi: rtl8192ce: Log message that B_CUT device may not work 

There are a number of problems that occur for the latest version
of the Realtek RTL8188CE device with the in-kernel driver. These
include selection of the wrong firmware, and system lockup. A full
fix is known, but is too invasive for inclusion in stable. This patch
fixes the problem with loading the wrong firmware, and logs a message
that the device may not work for kernels 3.6 and older.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Cc: Anisse Astier <anisse@astier.eu>
Cc: Li Chaoming <chaoming_li@realsil.com.cn>
Tested-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2012-09-11 11:11:13 -05:00 committed by John W. Linville
parent 4abd044af9
commit 022e1d0680
3 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/rtlwifi/rtl8192ce/def.h
View File

@ -117,6 +117,7 @@
#define CHIP_VER_B BIT(4)
#define CHIP_92C_BITMASK BIT(0)
#define CHIP_UNKNOWN BIT(7)
#define CHIP_92C_1T2R 0x03
#define CHIP_92C 0x01
#define CHIP_88C 0x00

12
drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
View File

@ -994,8 +994,16 @@ static enum version_8192c _rtl92ce_read_chip_version(struct ieee80211_hw *hw)
version = (value32 & TYPE_ID) ? VERSION_A_CHIP_92C :
VERSION_A_CHIP_88C;
} else {
version = (value32 & TYPE_ID) ? VERSION_B_CHIP_92C :
VERSION_B_CHIP_88C;
version = (enum version_8192c) (CHIP_VER_B |
((value32 & TYPE_ID) ? CHIP_92C_BITMASK : 0) |
((value32 & VENDOR_ID) ? CHIP_VENDOR_UMC : 0));
if ((!IS_CHIP_VENDOR_UMC(version)) && (value32 &
CHIP_VER_RTL_MASK)) {
version = (enum version_8192c)(version |
((((value32 & CHIP_VER_RTL_MASK) == BIT(12))
? CHIP_VENDOR_UMC_B_CUT : CHIP_UNKNOWN) |
CHIP_VENDOR_UMC));
}
}
switch (version) {

6
drivers/net/wireless/rtlwifi/rtl8192ce/sw.c
View File

@ -162,10 +162,12 @@ int rtl92c_init_sw_vars(struct ieee80211_hw *hw)
/* request fw */
if (IS_VENDOR_UMC_A_CUT(rtlhal->version) &&
!IS_92C_SERIAL(rtlhal->version))
!IS_92C_SERIAL(rtlhal->version)) {
rtlpriv->cfg->fw_name = "rtlwifi/rtl8192cfwU.bin";
else if (IS_81xxC_VENDOR_UMC_B_CUT(rtlhal->version))
} else if (IS_81xxC_VENDOR_UMC_B_CUT(rtlhal->version)) {
rtlpriv->cfg->fw_name = "rtlwifi/rtl8192cfwU_B.bin";
pr_info("****** This B_CUT device may not work with kernels 3.6 and earlier\n");
}
rtlpriv->max_fw_size = 0x4000;
pr_info("Using firmware %s\n", rtlpriv->cfg->fw_name);