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From: Nathan Chancellor <nathan@kernel.org>
To: Arend van Spriel <arend.vanspriel@broadcom.com>
Cc: linux-wireless@vger.kernel.org, brcm80211@lists.linux.dev,
	 brcm80211-dev-list.pdl@broadcom.com, llvm@lists.linux.dev,
	 patches@lists.linux.dev, stable@vger.kernel.org,
	 Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH] wifi: brcmsmac: Remove const from tbl_ptr parameter in wlc_lcnphy_common_read_table()
Date: Tue, 15 Jul 2025 19:45:23 -0700	[thread overview]
Message-ID: <20250715-brcmsmac-fix-uninit-const-pointer-v1-1-16e6a51a8ef4@kernel.org> (raw)

A new warning in clang [1] complains that diq_start in
wlc_lcnphy_tx_iqlo_cal() is passed uninitialized as a const pointer to
wlc_lcnphy_common_read_table():

  drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:2728:13: error: variable 'diq_start' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer]
   2728 |                                                      &diq_start, 1, 16, 69);
        |                                                       ^~~~~~~~~

The table pointer passed to wlc_lcnphy_common_read_table() should not be
considered constant, as wlc_phy_read_table() is ultimately going to
update it. Remove the const qualifier from the tbl_ptr to clear up the
warning.

Cc: stable@vger.kernel.org
Closes: https://github.com/ClangBuiltLinux/linux/issues/2108
Fixes: 5b435de0d786 ("net: wireless: add brcm80211 drivers")
Link: https://github.com/llvm/llvm-project/commit/00dacf8c22f065cb52efb14cd091d441f19b319e [1]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
index d0faba240561..b4bba67a45ec 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c
@@ -919,7 +919,7 @@ void wlc_lcnphy_read_table(struct brcms_phy *pi, struct phytbl_info *pti)
 
 static void
 wlc_lcnphy_common_read_table(struct brcms_phy *pi, u32 tbl_id,
-			     const u16 *tbl_ptr, u32 tbl_len,
+			     u16 *tbl_ptr, u32 tbl_len,
 			     u32 tbl_width, u32 tbl_offset)
 {
 	struct phytbl_info tab;

---
base-commit: bbc19fef578970158847a41d9b6b6b218034b8c2
change-id: 20250715-brcmsmac-fix-uninit-const-pointer-d35114a50936

Best regards,
--  
Nathan Chancellor <nathan@kernel.org>


             reply	other threads:[~2025-07-16  2:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-16  2:45 Nathan Chancellor [this message]
2025-07-16  9:32 ` [PATCH] wifi: brcmsmac: Remove const from tbl_ptr parameter in wlc_lcnphy_common_read_table() Arend van Spriel

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