Re: [PATCH -next] mt76: mt7915: Fix build error

Yuehaibing [off-list ref] writes:

On 2020/5/22 18:11, Kalle Valo wrote:

quoted

YueHaibing [off-list ref] writes:

quoted

In file included from ./include/linux/firmware.h:6:0,
                 from drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:4:
In function ‘__mt7915_mcu_msg_send’,
    inlined from ‘mt7915_mcu_send_message’ at drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:370:6:
./include/linux/compiler.h:396:38: error: call to ‘__compiletime_assert_545’ declared with attribute error: BUILD_BUG_ON failed: cmd == MCU_EXT_CMD_EFUSE_ACCESS && mcu_txd->set_query != MCU_Q_QUERY
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
./include/linux/compiler.h:377:4: note: in definition of macro ‘__compiletime_assert’
    prefix ## suffix();    \
    ^~~~~~
./include/linux/compiler.h:396:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:50:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
  ^~~~~~~~~~~~~~~~
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:280:2: note: in expansion of macro ‘BUILD_BUG_ON’
  BUILD_BUG_ON(cmd == MCU_EXT_CMD_EFUSE_ACCESS &&
  ^~~~~~~~~~~~

BUILD_BUG_ON is meaningless here, chang it to WARN_ON.

Fixes: e57b7901469f ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets")
Signed-off-by: YueHaibing <redacted>

I'm curious why I don't see this build error? I was about to send a pull
request to Dave, should I hold off the pull request due to this problem?

The config is attached

gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)

Thanks, I was able to reproduce the error with gcc-10 using your config
but didn't have time to investigate what was different in my config and
why I didn't see it.

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