brcmfmac: sdio: Fix undefined behavior due to shift overflowing the constant
authorBorislav Petkov <bp@alien8.de>
Tue, 5 Apr 2022 16:55:37 +0000 (18:55 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 27 Apr 2022 12:41:09 +0000 (14:41 +0200)
commit09887199ce9dce2bebcaa659fcff4b102a6d9278
tree4bef7f10141359aa00e4b181f7823c275cb0be55
parenta6c1e251b3f849ccc88e04b0a678231477f0530e
brcmfmac: sdio: Fix undefined behavior due to shift overflowing the constant

[ Upstream commit 6fb3a5868b2117611f41e421e10e6a8c2a13039a ]

Fix:

  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c: In function â€˜brcmf_sdio_drivestrengthinit’:
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3798:2: error: case label does not reduce to an integer constant
    case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17):
    ^~~~
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3809:2: error: case label does not reduce to an integer constant
    case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13):
    ^~~~

See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory
details as to why it triggers with older gccs only.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Arend van Spriel <aspriel@gmail.com>
Cc: Franky Lin <franky.lin@broadcom.com>
Cc: Hante Meuleman <hante.meuleman@broadcom.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: brcm80211-dev-list.pdl@broadcom.com
Cc: netdev@vger.kernel.org
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/Ykx0iRlvtBnKqtbG@zn.tnic
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c