linux-kernel - [PATCH v2 2/2] staging: rtl8192u: use min_t/max

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Message-Id: <65518c0b366bf199903c6c530774c61ba6087165.1649378587.git.remckee0@gmail.com>
Date:   Thu,  7 Apr 2022 20:12:51 -0500
From:   Rebecca Mckeever <remckee0@...il.com>
To:     outreachy@...ts.linux.dev
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Rebecca Mckeever <remckee0@...il.com>
Subject: [PATCH v2 2/2] staging: rtl8192u: use min_t/max_t macros instead of if else

Replace if else statement with min_t or max_t macros to increase
readability and conform to Linux kernel coding style. The _t versions
of the macros must be used to avoid applying typeof to the bit fields
pPeerHTCap->MaxRxAMPDUFactor, and pPeerHTCap->MPDUDensity.

Using u32 assures the reader that the value with not be truncated
without having to look up the types of the variables involved.
Found with minmax coccinelle script.

Signed-off-by: Rebecca Mckeever <remckee0@...il.com>
---
 drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c b/drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c
index dba3f2db9f48..358c35d9589c 100644
--- a/drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c
+++ b/drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c
@@ -940,10 +940,8 @@ void HTOnAssocRsp(struct ieee80211_device *ieee)
 			else
 				pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
 		} else {
-			if (pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
-				pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
-			else
-				pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
+			pHTInfo->CurrentAMPDUFactor = min_t(u32, pPeerHTCap->MaxRxAMPDUFactor,
+							    HT_AGG_SIZE_32K);
 		}
 	}
 
@@ -951,10 +949,9 @@ void HTOnAssocRsp(struct ieee80211_device *ieee)
 	 * <2> Set AMPDU Minimum MPDU Start Spacing
 	 * 802.11n 3.0 section 9.7d.3
 	 */
-	if (pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
-		pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
-	else
-		pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
+	pHTInfo->CurrentMPDUDensity = max_t(u32, pHTInfo->MPDU_Density,
+					    pPeerHTCap->MPDUDensity);
+
 	if (ieee->pairwise_key_type != KEY_TYPE_NA)
 		pHTInfo->CurrentMPDUDensity	= 7; // 8us
 	// Force TX AMSDU
-- 
2.32.0