netdev - [PATCH net-next] ath11k: fix m68k and xtensa build failure in ath11k_peer_assoc_h

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Message-Id: <20211008143932.23884-1-kvalo@codeaurora.org>
Date:   Fri,  8 Oct 2021 17:39:32 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     netdev@...r.kernel.org
Cc:     ath11k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        sfr@...b.auug.org.au, geert@...ux-m68k.org
Subject: [PATCH net-next] ath11k: fix m68k and xtensa build failure in ath11k_peer_assoc_h_smps()

Stephen reported that ath11k was failing to build on m68k and xtensa:

In file included from <command-line>:0:0:
In function 'ath11k_peer_assoc_h_smps',
    inlined from 'ath11k_peer_assoc_prepare' at drivers/net/wireless/ath/ath11k/mac.c:2362:2:
include/linux/compiler_types.h:317:38: error: call to '__compiletime_assert_650' declared with attribute error: FIELD_GET: type of reg too small for mask
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
include/linux/compiler_types.h:298:4: note: in definition of macro '__compiletime_assert'
    prefix ## suffix();    \
    ^
include/linux/compiler_types.h:317:2: 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/bitfield.h:52:3: note: in expansion of macro 'BUILD_BUG_ON_MSG'
   BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull,  \
   ^
include/linux/bitfield.h:108:3: note: in expansion of macro '__BF_FIELD_CHECK'
   __BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
   ^
drivers/net/wireless/ath/ath11k/mac.c:2079:10: note: in expansion of macro 'FIELD_GET'
   smps = FIELD_GET(IEEE80211_HE_6GHZ_CAP_SM_PS,

Fix the issue by using le16_get_bits() to specify the size explicitly.

Fixes: 6f4d70308e5e ("ath11k: support SMPS configuration for 6 GHz")
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Tested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
---

Dave & Jakub, as this fixes a build issue in net-next can you take this
directly to net-next? But if you prefer, I can also send this in a pull
request.

 drivers/net/wireless/ath/ath11k/mac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 89ab2fa7557c..160740c45dd7 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -2076,8 +2076,8 @@ static void ath11k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 		smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
 		smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;
 	} else {
-		smps = FIELD_GET(IEEE80211_HE_6GHZ_CAP_SM_PS,
-				 le16_to_cpu(sta->he_6ghz_capa.capa));
+		smps = le16_get_bits(sta->he_6ghz_capa.capa,
+				     IEEE80211_HE_6GHZ_CAP_SM_PS);
 	}
 
 	switch (smps) {
-- 
2.20.1