From: Martin Kaiser Date: Sat, 12 Feb 2022 16:17:34 +0000 (+0100) Subject: staging: r8188eu: limit rtw_dbg_port to path a X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8460ddc21c6f42d01b75ef37a5a0814d14f18ff1;p=linux.git staging: r8188eu: limit rtw_dbg_port to path a Rf registers can be read by rtw_wx_read_rf or via the private ioctl 0x0B. The latter calls rtw_dbg_port. Limit rf register reads to path a in rtw_debug_port. Signed-off-by: Martin Kaiser Link: https://lore.kernel.org/r/20220212161737.381841-8-martin@kaiser.cx Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c index 30fdc8afcffe8..4b3134aef9172 100644 --- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c +++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c @@ -3621,7 +3621,11 @@ static int rtw_dbg_port(struct net_device *dev, DBG_88E("write_bbreg(0x%x) = 0x%x\n", arg, rtl8188e_PHY_QueryBBReg(padapter, arg, 0xffffffff)); break; case 0x74:/* read_rf */ - DBG_88E("read RF_reg path(0x%02x), offset(0x%x), value(0x%08x)\n", minor_cmd, arg, rtl8188e_PHY_QueryRFReg(padapter, minor_cmd, arg, 0xffffffff)); + if (minor_cmd != RF_PATH_A) { + ret = -EINVAL; + break; + } + DBG_88E("read RF_reg path(0x%02x), offset(0x%x), value(0x%08x)\n", RF_PATH_A, arg, rtl8188e_PHY_QueryRFReg(padapter, RF_PATH_A, arg, 0xffffffff)); break; case 0x75:/* write_rf */ if (minor_cmd != RF_PATH_A) {