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Date: Tue, 12 May 2020 05:59:20 +0800
From: kbuild test robot <lkp@...el.com>
To: Jerome Pouiller <Jerome.Pouiller@...abs.com>,
devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc: kbuild-all@...ts.01.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"David S . Miller" <davem@...emloft.net>,
Kalle Valo <kvalo@...eaurora.org>
Subject: Re: [PATCH 13/17] staging: wfx: fix endianness of the field 'len'
Hi Jerome,
I love your patch! Perhaps something to improve:
[auto build test WARNING on staging/staging-testing]
[also build test WARNING on next-20200511]
[cannot apply to v5.7-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Jerome-Pouiller/staging-wfx-fix-support-for-big-endian-hosts/20200512-031750
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git ae73e7784871ebe2c43da619b4a1e2c9ff81508d
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=m68k
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/byteorder/big_endian.h:5,
from arch/m68k/include/uapi/asm/byteorder.h:5,
from include/asm-generic/bitops/le.h:6,
from arch/m68k/include/asm/bitops.h:528,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/asm-generic/bug.h:19,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/gpio/consumer.h:6,
from drivers/staging/wfx/bh.c:8:
drivers/staging/wfx/bh.c: In function 'tx_helper':
>> drivers/staging/wfx/bh.c:202:39: warning: passing argument 1 of '__swab16s' makes pointer from integer without a cast [-Wint-conversion]
202 | cpu_to_le16s(((struct hif_msg *)data)->len);
include/uapi/linux/byteorder/big_endian.h:96:38: note: in definition of macro '__cpu_to_le16s'
96 | #define __cpu_to_le16s(x) __swab16s((x))
| ^
>> drivers/staging/wfx/bh.c:202:2: note: in expansion of macro 'cpu_to_le16s'
202 | cpu_to_le16s(((struct hif_msg *)data)->len);
| ^~~~~~~~~~~~
In file included from include/linux/swab.h:5,
from include/uapi/linux/byteorder/big_endian.h:13,
from include/linux/byteorder/big_endian.h:5,
from arch/m68k/include/uapi/asm/byteorder.h:5,
from include/asm-generic/bitops/le.h:6,
from arch/m68k/include/asm/bitops.h:528,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/asm-generic/bug.h:19,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/gpio/consumer.h:6,
from drivers/staging/wfx/bh.c:8:
include/uapi/linux/swab.h:240:37: note: expected '__u16 *' {aka 'short unsigned int *'} but argument is of type 'u16' {aka 'short unsigned int'}
240 | static inline void __swab16s(__u16 *p)
| ~~~~~~~^
vim +/__swab16s +202 drivers/staging/wfx/bh.c
169
170 static void tx_helper(struct wfx_dev *wdev, struct hif_msg *hif)
171 {
172 int ret;
173 void *data;
174 bool is_encrypted = false;
175 size_t len = hif->len;
176
177 WARN(len < sizeof(*hif), "try to send corrupted data");
178
179 hif->seqnum = wdev->hif.tx_seqnum;
180 wdev->hif.tx_seqnum = (wdev->hif.tx_seqnum + 1) % (HIF_COUNTER_MAX + 1);
181
182 if (wfx_is_secure_command(wdev, hif->id)) {
183 len = round_up(len - sizeof(hif->len), 16) + sizeof(hif->len) +
184 sizeof(struct hif_sl_msg_hdr) +
185 sizeof(struct hif_sl_tag);
186 // AES support encryption in-place. However, mac80211 access to
187 // 802.11 header after frame was sent (to get MAC addresses).
188 // So, keep origin buffer clear.
189 data = kmalloc(len, GFP_KERNEL);
190 if (!data)
191 goto end;
192 is_encrypted = true;
193 ret = wfx_sl_encode(wdev, hif, data);
194 if (ret)
195 goto end;
196 } else {
197 data = hif;
198 }
199 WARN(len > wdev->hw_caps.size_inp_ch_buf,
200 "%s: request exceed WFx capability: %zu > %d\n", __func__,
201 len, wdev->hw_caps.size_inp_ch_buf);
> 202 cpu_to_le16s(((struct hif_msg *)data)->len);
203 len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, len);
204 ret = wfx_data_write(wdev, data, len);
205 if (ret)
206 goto end;
207
208 wdev->hif.tx_buffers_used++;
209 _trace_hif_send(hif, wdev->hif.tx_buffers_used);
210 end:
211 if (is_encrypted)
212 kfree(data);
213 }
214
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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