From 5242a5444e0b6464d7455beb55d936dd192b5e9d Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Mon, 22 Jan 2018 21:46:39 +0100
Subject: [PATCH] brcmfmac: assure bcdc dcmd api does not return value > 0
Git-commit: 5242a5444e0b6464d7455beb55d936dd192b5e9d
Patch-mainline: v4.16-rc1
References: FATE#326294
The protocol layer api defines callbacks for dongle commands.
Although not really well documented these should only return an
error code in case of an error, or 0 upon success. In the bcdc
protocol it can return value above 0 and we carry a fix in the
caller of the protocol layer api. This patch makes it adhere to
the intent of the api as described above.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 6 +++++-
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c | 8 +++-----
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
index 9f2d0b0cf6e5..bd6da053c03e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -211,6 +211,8 @@ brcmf_proto_bcdc_query_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
memcpy(buf, info, len);
}
+ ret = 0;
+
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
ret = le32_to_cpu(msg->status);
@@ -225,7 +227,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
{
struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
- int ret = 0;
+ int ret;
u32 flags, id;
brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
@@ -249,6 +251,8 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
goto done;
}
+ ret = 0;
+
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
ret = le32_to_cpu(msg->status);
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
index f6a2df94dba7..d328aae0a0a4 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
@@ -121,11 +121,9 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
else
err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
- if (err >= 0)
- return 0;
-
- brcmf_dbg(FIL, "Failed: %s (%d)\n",
- brcmf_fil_get_errstr((u32)(-err)), err);
+ if (err)
+ brcmf_dbg(FIL, "Failed: %s (%d)\n",
+ brcmf_fil_get_errstr((u32)(-err)), err);
return err;
}
--
2.19.2